EFFECT OF WATER VAPOR ON HIGH-TEMPERATURE OXIDATION BEHAVIOR OF Ni-20Cr ALLOY AND ITS SPUTTEREDMICROCRYSTALLINE COATING AT 1000℃

J Chin Soc Corr Pro

2001, Vol. 21

Issue (2): 95-100 DOI:

Research Report

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EFFECT OF WATER VAPOR ON HIGH-TEMPERATURE OXIDATION BEHAVIOR OF Ni-20Cr ALLOY AND ITS SPUTTEREDMICROCRYSTALLINE COATING AT 1000℃

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中科院金属所;金属腐蚀与防护国家重点实验室

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Abstract The oxidation behavior of Ni-20Cr alloy and its spu ttered microcrystalline coating have been studied in the presence of water vapor at 1000℃.The results indicate that the higher the water vapor content,the le ss the mass gain of the alloy.The composition of scale depends on the content o f water vapor.However,the water vapor content has only effect on the mass gain of the microcrystalline coating.The oxide scales were examined and analyzed by optical microscope(OM),X-ray diffraction(XRD) and scanning electron microscope (SEM) with EDX.The mechanism of the effect of water vapor on the alloy and its sputtered microcrystalline coatings was proposed.

Key words: water vapor Ni-20Cr alloy sputtered microcrystalline c oating oxidation mechanism

Received: 20 May 2000

ZTFLH:

TG172.8

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;. EFFECT OF WATER VAPOR ON HIGH-TEMPERATURE OXIDATION BEHAVIOR OF Ni-20Cr ALLOY AND ITS SPUTTEREDMICROCRYSTALLINE COATING AT 1000℃. J Chin Soc Corr Pro, 2001, 21(2): 95-100 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2001/V21/I2/95

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