Cycle oxidation behavior of nanostructured Ni60-TiB2 composite coating sprayed by HVOF technique

被引：19

作者：

Wu, Y. S. ^{[1
]}

Qiu, W. Q. ^{[1
]}

Yu, H. Y. ^{[1
]}

Zhong, X. C. ^{[1
]}

Liu, Z. W. ^{[1
]}

Zeng, D. C. ^{[1
]}

Li, S. Z. ^{[1
]}

机构：

[1] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 23期

关键词：

Cycle oxidation; Nanostructured composite coating; HVOF; Ni60-TiB2; ABRASIVE WEAR BEHAVIOR; BASE SUPERALLOY; WC; MICROSTRUCTURE;

D O I：

10.1016/j.apsusc.2011.07.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cycle oxidation resistance at 800 degrees C in static air was investigated for a nanostructured Ni60-TiB2 composite coating sprayed by high velocity oxy-fuel (HVOF). For comparison, a Ni60-TiB2 conventional composite coating was also studied. The results indicate that, the oxidation processes of both composite coatings are controlled by diffusion mechanism, and the nanostructured composite coating has better cycle oxidation resistance than that of the conventional composite coating. The reasons for this improvement can be attributed to the formation of the intact SiO2 and Cr2O3 protective layer, and the enhanced adhesion between oxide film and nanostructure coating. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：10224 / 10232

页数：9

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