CYCLIC OXIDATION BEHAVIOR OF A SPUTTEREDNANOCRYSTALLINE COATING OF IN738 SUPERALLOY

J Chin Soc Corr Pro

2001, Vol. 21

Issue (6): 334-339 DOI:

Research Report

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CYCLIC OXIDATION BEHAVIOR OF A SPUTTEREDNANOCRYSTALLINE COATING OF IN738 SUPERALLOY

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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 cyclic oxidation behavior of IN738 alloy and it s nanocrystalline coating has been studied. The results indicated that the cycli c oxidation resistance of nanocrystalline coating was better than that of IN738 alloy at 950℃.The oxidation of nanocrystalline coating formed a double externa l oxide scale without internal oxide or nitride. The scale consisted of an outer part of Cr2O3 and spinel and an inner part of a continuous Al2O3 scale, which offered good adhesive and protectiveness. Thus,the cyclic oxidation resi stance of the coated IN738 alloy was significantly improved. 

Key words: sputtered coating superalloy nanocrystal cyclic oxidat ion

Received: 28 November 2000

ZTFLH:

TG172.82

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. CYCLIC OXIDATION BEHAVIOR OF A SPUTTEREDNANOCRYSTALLINE COATING OF IN738 SUPERALLOY. J Chin Soc Corr Pro, 2001, 21(6): 334-339 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2001/V21/I6/334

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