Adhesion Strength of Thermal Barrier Coatings with Thermal-Sprayed Bondcoat Treated by Compound Method of High-Current Pulsed Electron Beam and Grit Blasting

被引：21
作者：
Cai, Jie [1 ,2 ]
Guan, Qingfeng [1 ]
Lv, Peng [1 ]
Hou, Xiuli [1 ]
Wang, Zhiping [3 ]
Han, Zhiyong [3 ]
机构：
[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
[2] Jiangsu Univ, Engn Inst Adv Mfg & Modern Equipment Technol, Zhenjiang 212013, Peoples R China
[3] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2015年 / 24卷 / 05期
基金：
中国国家自然科学基金;
关键词：
adhesion strength; grit blasting; high-current pulsed electron beam (HCPEB); surface roughness; thermal barrier coatings (TBCs); OXIDATION BEHAVIOR; MECHANISMS; SYSTEMS; COATS;
D O I：
10.1007/s11666-015-0241-3
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Microstructural characteristics and adhesion properties of air plasma spraying, thermal barrier coatings (TBCs) having thermally sprayed bond coats treated by high-current pulsed electron beam (HCPEB) irradiation, and a combination treatment of HCPEB and grit blasting were investigated. Microstructure observations revealed that the original coarse surface of thermally sprayed bond coat was significantly changed to interconnected bulged nodules with a compact appearance after HCPEB irradiation. With further grit blasting treatment, these series of bulged nodules appeared with successive and uniform jagged edges. Surface roughness of the bond coat after compound treatment became higher due to these bulged nodules with jagged edges, which was conducive to ceramic deposition. The results of the tensile test revealed that the adhesion strength of thermally sprayed TBCs with the bond coats conducted by a compound treatment was obviously increased. The combination treatment of HCPEB and grit blasting improved the interfacial bonding strength as well as the interfacial homogeneity.
引用
收藏
页码：798 / 806
页数：9
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