EFFECTS OF PLASMA SURFACE TA ALLOYING ON THE TRIBOLOGY BEHAVIOR OF γ-TiAl

被引：3
作者：
Wei, D-B [1 ,2 ,3 ]
Zhou, X. [1 ,2 ]
Li, F-K [1 ,2 ]
Li, M-F [1 ,2 ]
Li, S-Q [1 ,2 ]
Zhang, P-Z [1 ,2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing, Peoples R China
[2] Minist Ind & Informat Technol, Mat Preparat & Protect Harsh Environm Key Lab, Nanjing, Peoples R China
[3] Minist Ind & Informat Technol, Aeroengine Thermal Environm & Struct Key Lab, Nanjing, Peoples R China
来源：
JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY | 2021年 / 57卷 / 01期
基金：
中国博士后科学基金;
关键词：
gamma-TiAl; Plasma surface Ta alloying; Wear resistance; Tribology behavior; OXIDATION BEHAVIOR; X X; NB; MICROSTRUCTURE; WEAR;
D O I：
10.2298/JMMB200617002W
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
To improve the wear resistance of gamma-TiAl alloy, Ta alloy layer was prepared on surface by double glow plasma surface allaying technique. The tribology behavior of Ta alloy layer against Si3N4 at 25 degrees C, 350 degrees C and 500 degrees C were comparatively studied. The results showed that M alloy layer comprised a deposition layer and a diffusion layer. The deposition layer played a role in protection as a soft film. With the increase of temperature, the wear mechanism of gamma-TiAl changed from abrasive wear to coexistence of abrasive wear and oxidation wear. Ta alloy layer's wear mechanism changed from adhesive wear to coexistence of adhesive wear and oxidation wear. Surface Ta alloying process significantly reduced the wear volume, the specific wear rate and the friction coefficient of gamma-TiAl and improved the wear resistance properties of gamma-TiAl.
引用
收藏
页码：97 / 104
页数：8
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