Page 21 - 摩擦学学报2025年第8期

第 8 期 黄元宝, 等: 2种高铬马氏体不锈钢与浸锑石墨配副的摩擦磨损行为研究 1119

0.35 0.3
(a) Cr alloy (b)
9Cr18 0.2 P=0.866
9Cr18MoV
Friction coefficient 0.15 Average friction coefficient 0.1
0.25

0.05 0.0
0.0 2.5 5.0 7.5 10.0 Cr alloy 9Cr18 9Cr18MoV
Sliding time/10 s Samples
3
Fig. 9 Friction coefficient of three stainless steel surfaces under dry conditions: (a) variation of
friction coefficient with sliding time; (b) average friction coefficient
图 9 干摩擦条件下3种不锈钢表面的摩擦系数：(a)摩擦系数随滑动时间变化的关系曲线；(b)平均摩擦系数

(a) (b) (c)

100 μm 0.5 100 μm 0.5 100 μm

0.5
Wear depth/μm 0.0 Wear depth/μm 0.0 Wear depth/μm 0.0

−0.5
−130 0 130 −0.5 −130 0 130 −0.5 −130 0 130
Width/μm Width/μm Width/μm

Fig. 10 LCSM micrographs and profiles of the worn surfaces of three stainless steels under dry conditions:
(a) Cr alloy; (b) 9Cr18; (c) 9Cr18MoV
图 10 干摩擦条件下3种不锈钢磨损表面形貌的LCSM照片和磨斑轮廓：(a)进口Cr合金；(b) 9Cr18；(c) 9Cr18MoV

0.16 0.16 0.15
(a) 1.0 MPa 1.5 MPa (b) 1.0 MPa 1.5 MPa (c) 9Cr18
2.0 MPa 2.5 MPa 0.12 2.0 MPa 2.5 MPa 0.10 9Cr18MoV
0.12
Friction coefficient 0.08 Friction coefficient 0.08 Average friction coefficient 0.05
3.0 MPa
3.0 MPa

0.04

0.00
0.00 0.04 0.00
0 1 200 2 400 3 600 0 1 200 2 400 3 600 1.0 1.5 2.0 2.5 3.0
Sliding time/s Sliding time/s Contact stress/MPa
Fig. 11 Friction coefficient of two stainless steel surfaces under different contact stresses: (a) friction coefficient curves of 9Cr18
surface; (b) friction coefficient curves of 9Cr18MoV surface; (c) variation of average friction coefficient with contact stress
图 11 不同接触应力下2种不锈钢表面的摩擦系数：(a) 9Cr18表面摩擦系数曲线；(b) 9Cr18MoV
表面摩擦系数曲线；(c)平均摩擦系数随接触应力的变化

度. 可以看到，2种不锈钢试样磨损表面均呈现轻微犁 表面在所有接触应力下的磨损痕迹均更轻，磨损区域
削痕迹，犁沟数量随接触应力的增大而增多，磨损机制 表面粗糙度更低，这表明其耐磨性更强. 图12(d)和(e)所
以磨粒磨损为主. 与9Cr18试样相比，9Cr18MoV试样 示分别为2种不锈钢试样在线速度1.0 m/s和接触应力