Page 48 - 《摩擦学学报》2021年第2期
P. 48
第 2 期 丰晓春, 等: 添加Ag 2 Nb 4 O 11 的NiAl基复合材料的高温摩擦学性能及高温润滑机理研究 193
(a 1 ) (b 1 )
Slip direction
50 μm 500 μm
(a 2 ) (b 2 )
Slip direction
50 μm 500 μm
(a 3 ) (b 3 )
Slip direction
50 μm 500 μm
(a 4 ) (b 4 )
Slip direction
Wear debris
50 μm 500 μm
(a ) (b 5 )
5
Wear debris
50 μm 500 μm
Fig. 6 SEM micrographs of the wear scar of NABO20 (a 1 -a 5 ) and the coupled balls (b 1 -b 5 ) at various test temperature:
(a 1 , b 1 ) 25 ℃, (a 2 , b 2 ) 200 ℃, (a 3 , b 3 ) 400 ℃, (a 4 , b 4 ) 600 ℃, (a 5 , b 5 ) 800 ℃
图 6 不同测试温度下NABO20磨痕形貌(a 1 -a 5 )和相应Al 2 O 3 对偶球摩擦表面(b 1 -b 5 )的SEM图像：
(a 1 , b 1 ) 25 ℃, (a 2 , b 2 ) 200 ℃, (a 3 , b 3 ) 400 ℃, (a 4 , b 4 ) 600 ℃, (a 5 , b 5 ) 800 ℃
