Enhanced interfacial bonding and superior oxidation resistance of CoCrAlY-TiB2 composite coating fabricated by air plasma spraying

被引：9

作者：

An, Qi ^{[2
]}

Huang, Lujun ^{[1
,2
]}

Wei, Shaolou ^{[2
,3
]}

Zhang, Rui ^{[2
]}

Rong, Xudong ^{[2
]}

Wang, You ^{[2
]}

Geng, Lin ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, POB 433, Harbin 150001, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

[3] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

CORROSION SCIENCE | 2019年 / 158卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Air plasma spray; CoCrAlY-TiB2 composite coating; Microstructures; Bonding strength; Cyclic oxidation; THERMAL BARRIER COATINGS; SURFACE MICROSTRUCTURE; NICOCRALY COATINGS; CYCLIC OXIDATION; BEHAVIOR; TEMPERATURE; EVOLUTION;

D O I：

10.1016/j.corsci.2019.108102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to enhance oxidation resistance of titanium matrix materials, CoCrAlY-TiB2 coating is introduced by air plasma spray. Tensile test demonstrates that TiB2 addition promoted interfacial bonding strength with a maximum enhancing effect of 22.6%, which alleviated mechanical spallation of the coating and consequently gave rise to the improved physicochemical stability. Cyclic oxidation tests at 700, 800, and 900 degrees C reveal that weight gain of coated specimens reduced by 66.7%, 73.1%, and 75.2% compared with the TMCs substrate. The significantly enhanced anti-oxidation performance was mostly ascribed to the improved microstructural stability and the formation of dense Al2O3 and Cr2O3 oxides.

引用

页数：11

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