Behavior of a barrier layer of corrosion films on zirconium alloys

Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measur...
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Autor*in:	Nikitin, K. N. [verfasserIn] Shishov, V. N. [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2010

Schlagwörter:	Oxide Film Barrier Potential Barrier Layer Zirconium Alloy Electrophysical Property

Übergeordnetes Werk:	Enthalten in: Protection of metals - Moscow : MAIK Nauka/Interperiodica Publ., 2000, 46(2010), 2 vom: März, Seite 261-266
Übergeordnetes Werk:	volume:46 ; year:2010 ; number:2 ; month:03 ; pages:261-266

Links:	Volltext

DOI / URN:	10.1134/S2070205110020140

Katalog-ID:	SPR016844815

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520			\|a Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items.
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allfields	10.1134/S2070205110020140 doi (DE-627)SPR016844815 (SPR)S2070205110020140-e DE-627 ger DE-627 rakwb eng 670 ASE 52.78 bkl Nikitin, K. N. verfasserin aut Behavior of a barrier layer of corrosion films on zirconium alloys 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items. Oxide Film (dpeaa)DE-He213 Barrier Potential (dpeaa)DE-He213 Barrier Layer (dpeaa)DE-He213 Zirconium Alloy (dpeaa)DE-He213 Electrophysical Property (dpeaa)DE-He213 Shishov, V. N. verfasserin aut Enthalten in Protection of metals Moscow : MAIK Nauka/Interperiodica Publ., 2000 46(2010), 2 vom: März, Seite 261-266 (DE-627)334712300 (DE-600)2058128-2 1608-327X nnns volume:46 year:2010 number:2 month:03 pages:261-266 https://dx.doi.org/10.1134/S2070205110020140 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 52.78 ASE AR 46 2010 2 03 261-266
spelling	10.1134/S2070205110020140 doi (DE-627)SPR016844815 (SPR)S2070205110020140-e DE-627 ger DE-627 rakwb eng 670 ASE 52.78 bkl Nikitin, K. N. verfasserin aut Behavior of a barrier layer of corrosion films on zirconium alloys 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items. Oxide Film (dpeaa)DE-He213 Barrier Potential (dpeaa)DE-He213 Barrier Layer (dpeaa)DE-He213 Zirconium Alloy (dpeaa)DE-He213 Electrophysical Property (dpeaa)DE-He213 Shishov, V. N. verfasserin aut Enthalten in Protection of metals Moscow : MAIK Nauka/Interperiodica Publ., 2000 46(2010), 2 vom: März, Seite 261-266 (DE-627)334712300 (DE-600)2058128-2 1608-327X nnns volume:46 year:2010 number:2 month:03 pages:261-266 https://dx.doi.org/10.1134/S2070205110020140 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 52.78 ASE AR 46 2010 2 03 261-266
allfields_unstemmed	10.1134/S2070205110020140 doi (DE-627)SPR016844815 (SPR)S2070205110020140-e DE-627 ger DE-627 rakwb eng 670 ASE 52.78 bkl Nikitin, K. N. verfasserin aut Behavior of a barrier layer of corrosion films on zirconium alloys 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items. Oxide Film (dpeaa)DE-He213 Barrier Potential (dpeaa)DE-He213 Barrier Layer (dpeaa)DE-He213 Zirconium Alloy (dpeaa)DE-He213 Electrophysical Property (dpeaa)DE-He213 Shishov, V. N. verfasserin aut Enthalten in Protection of metals Moscow : MAIK Nauka/Interperiodica Publ., 2000 46(2010), 2 vom: März, Seite 261-266 (DE-627)334712300 (DE-600)2058128-2 1608-327X nnns volume:46 year:2010 number:2 month:03 pages:261-266 https://dx.doi.org/10.1134/S2070205110020140 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 52.78 ASE AR 46 2010 2 03 261-266
allfieldsGer	10.1134/S2070205110020140 doi (DE-627)SPR016844815 (SPR)S2070205110020140-e DE-627 ger DE-627 rakwb eng 670 ASE 52.78 bkl Nikitin, K. N. verfasserin aut Behavior of a barrier layer of corrosion films on zirconium alloys 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items. Oxide Film (dpeaa)DE-He213 Barrier Potential (dpeaa)DE-He213 Barrier Layer (dpeaa)DE-He213 Zirconium Alloy (dpeaa)DE-He213 Electrophysical Property (dpeaa)DE-He213 Shishov, V. N. verfasserin aut Enthalten in Protection of metals Moscow : MAIK Nauka/Interperiodica Publ., 2000 46(2010), 2 vom: März, Seite 261-266 (DE-627)334712300 (DE-600)2058128-2 1608-327X nnns volume:46 year:2010 number:2 month:03 pages:261-266 https://dx.doi.org/10.1134/S2070205110020140 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 52.78 ASE AR 46 2010 2 03 261-266
allfieldsSound	10.1134/S2070205110020140 doi (DE-627)SPR016844815 (SPR)S2070205110020140-e DE-627 ger DE-627 rakwb eng 670 ASE 52.78 bkl Nikitin, K. N. verfasserin aut Behavior of a barrier layer of corrosion films on zirconium alloys 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items. Oxide Film (dpeaa)DE-He213 Barrier Potential (dpeaa)DE-He213 Barrier Layer (dpeaa)DE-He213 Zirconium Alloy (dpeaa)DE-He213 Electrophysical Property (dpeaa)DE-He213 Shishov, V. N. verfasserin aut Enthalten in Protection of metals Moscow : MAIK Nauka/Interperiodica Publ., 2000 46(2010), 2 vom: März, Seite 261-266 (DE-627)334712300 (DE-600)2058128-2 1608-327X nnns volume:46 year:2010 number:2 month:03 pages:261-266 https://dx.doi.org/10.1134/S2070205110020140 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 52.78 ASE AR 46 2010 2 03 261-266
language	English
source	Enthalten in Protection of metals 46(2010), 2 vom: März, Seite 261-266 volume:46 year:2010 number:2 month:03 pages:261-266
sourceStr	Enthalten in Protection of metals 46(2010), 2 vom: März, Seite 261-266 volume:46 year:2010 number:2 month:03 pages:261-266
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topic_facet	Oxide Film Barrier Potential Barrier Layer Zirconium Alloy Electrophysical Property
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container_title	Protection of metals
authorswithroles_txt_mv	Nikitin, K. N. @@aut@@ Shishov, V. N. @@aut@@
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author	Nikitin, K. N.
spellingShingle	Nikitin, K. N. ddc 670 bkl 52.78 misc Oxide Film misc Barrier Potential misc Barrier Layer misc Zirconium Alloy misc Electrophysical Property Behavior of a barrier layer of corrosion films on zirconium alloys
authorStr	Nikitin, K. N.
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topic_title	670 ASE 52.78 bkl Behavior of a barrier layer of corrosion films on zirconium alloys Oxide Film (dpeaa)DE-He213 Barrier Potential (dpeaa)DE-He213 Barrier Layer (dpeaa)DE-He213 Zirconium Alloy (dpeaa)DE-He213 Electrophysical Property (dpeaa)DE-He213
topic	ddc 670 bkl 52.78 misc Oxide Film misc Barrier Potential misc Barrier Layer misc Zirconium Alloy misc Electrophysical Property
topic_unstemmed	ddc 670 bkl 52.78 misc Oxide Film misc Barrier Potential misc Barrier Layer misc Zirconium Alloy misc Electrophysical Property
topic_browse	ddc 670 bkl 52.78 misc Oxide Film misc Barrier Potential misc Barrier Layer misc Zirconium Alloy misc Electrophysical Property
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title	Behavior of a barrier layer of corrosion films on zirconium alloys
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title_full	Behavior of a barrier layer of corrosion films on zirconium alloys
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author_browse	Nikitin, K. N. Shishov, V. N.
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title_sort	behavior of a barrier layer of corrosion films on zirconium alloys
title_auth	Behavior of a barrier layer of corrosion films on zirconium alloys
abstract	Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items.
abstractGer	Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items.
abstract_unstemmed	Abstract Capacitances of oxide films obtained on a EZ-1 alloy during the corrosion tests in water-vapor environment at 300, 350, and 400°C are measured. In order to estimate the thickness of a barrier layer, the barrier potential at a constant anodic current (dielectric puncture potential) is measured. It is shown that the barrier layer cannot be treated as a homogeneous environment. At the sites of intermetallide inclusions in the oxide film, the thickness of the dielectrics is locally decreased. In the first approximation, the heterogeneity of the oxide film can be taken into account by inserting two parallel RC subcircuits in the equivalent scheme. One subcircuit (C1, R1) describes the electrophysical properties of the capacitance whose insulator thickness corresponds to the total thickness of the oxide film. The other subcircuit (C2, R2) describes the electrophysical properties of the nonporous part of the oxide film between the intermetallide particles and the outer surface. Then, the results of measurements can be written as follows: Cexp = θC2 + (1 − θ)C1, where θ is the surface part of the oxide film whose dielectric properties are changed due to the inclusion of intermetallide particles. Assuming that the mean spatial size of intermetallide particles falls in the range of 200–400 nm, one can estimate the mean concentration of the particles on the metal surface in agreement with the metallographically determined concentration of the second-phase particles (approximately $ 10^{6} $–$ 10^{7} $ $ cm^{−2} $). The obtained results indicate the substantial heterogeneity of the barrier layer structure, which may cause local corrosion and premature failure of zirconium items.
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title_short	Behavior of a barrier layer of corrosion films on zirconium alloys
url	https://dx.doi.org/10.1134/S2070205110020140
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