The evolution mechanism of tribo-oxide layer during high temperature dry sliding wear for nickel-based superalloy

Wear ◽  
2021 ◽  
pp. 203747
Author(s):  
Kaili Feng ◽  
Tianmin Shao
Keyword(s):  
High Temperature ◽  
Oxide Layer ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Evolution Mechanism ◽  
Nickel Based Superalloy

Comparative research on the effect of an oxide coating and a tribo-oxide layer on dry sliding wear of Ti–6Al–4V alloy

2018 ◽  
Vol 232 (12) ◽  
pp. 1569-1580 ◽  
Author(s):  
Yin Zhou ◽  
Shuqi Wang ◽  
Wei Chen ◽  
Wei Jiang ◽  
Lan Wang ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Comparative Research ◽  
Sliding Wear ◽  
Elevated Temperatures ◽  
Oxide Coating ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Wear Performance ◽  
Protective Function

The effect of an oxide coating and a tribo-oxide layer on dry sliding wear of Ti–6Al–4V alloy was comparatively studied. The oxide coating was prepared on Ti–6Al–4V alloy by a thermal oxidation/diffusion process; the tribo-layer was an in situ produced mechanically mixed layer during dry sliding. The oxide coating markedly improved the wear performance of Ti–6Al–4V alloy at room and elevated temperatures. Tribo-layers were classified into three types: no-oxide tribo-layer, porous, and dense tribo-oxide layers. Both porous and dense tribo-oxide layer presented protective function, thus significantly improving wear performance of Ti–6Al–4V alloy. However, no other than dense tribo-oxide layer was qualified to be comparable to the oxide coating, which almost possessed the same wear-reduced function as the oxide coating. Even when the oxide coating was severely delaminated, the tribo-oxide layer would replace the oxide coating and took effect to protect from wear.

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