Elevated temperature oxidation behavior of HVOF sprayed TiB2 cermet coating

被引：1
|
作者：
Behnam LOTFI [1 ]
机构：
[1] Department of Materials Engineering,Faculty of Engineering,Shahid Chamran University,Ahvaz,Iran
来源：
Transactions of Nonferrous Metals Society of China | 2010年 / 20卷 / 02期
关键词：
TiB2; cermet coating; thermal spraying; oxidation;
D O I：
暂无
中图分类号：
TG174.4 [金属表面防护技术];
学科分类号：
080503 ;
摘要：
Oxidation behaviors of Ni(Cr)-TiB2 coating deposited by HVOF technique were studied at 800,900 and 1 000℃in air. The microstructures of as-sprayed and oxidized coatings were characterized by X-ray diffractometry(XRD)and scanning electron microscopy(SEM).After oxidation at 800℃,a thin and adherent oxide layer was formed on the surface of the coating.With increasing exposure temperature,the thickness of the oxide layer increased;and at 1 000℃the oxide layer separated from the coating.Investigation of the kinetics of oxidation by using the thermogravimetric analysis(TGA)technique shows a parabolic oxidation rate.
引用
收藏
页码：243 / 247
页数：5
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