Page 24 - 《摩擦学学报》2021年第3期

第 3 期 黄国威, 等: Cu663合金表面石墨-铜三维复合润滑层的构筑与摩擦学性能研究 313

700
0.001
600
1E-4
500
1E-5
−Z imag /ohm 300 I m /A 1E-6
400

200 1E-7
Cu-50G Cu-50G
100 1E-8 Cu663
Cu663
0 1E-9
0 400 800 1 200 1 600 −0.6 −0.4 −0.2 0.0 0.2
Z real /ohm V f /V
(a) Impedance curves (b) Polarization curves
0.5
Friction coefficient 8
0.4 Wear rate
7 0.4
6 5 0.3 50%
Friction coefficient 0.2 4 3 Wear rate×10 −5 /(mm 3 ·N −1 mm −1 ) Friction coefficient 0.2
0.3

0.1
1 2 0.1 Cu663
Cu-50G
0.0 0 0.0
Cu663 Cu-50G Cu663 Cu-50G Time/s
0 0 1 000 2 000 3 000 4 000
(c) Mean friction coefficients and wear rates (d) Friction curves

Fig. 12 The electrochemical corrosion tests (a, b) and corrosion friction tests (c, d) of Cu663 and Cu-50G
图 12 Cu663合金和Cu-50G的电化学腐蚀测试(a，b)和腐蚀条件摩擦测试(c，d)

500 μm 500 μm Cl
(a) Cu663 corrosion (b) Cu663 corrosion surface (c) Cu663 corrosion surface
surface boundary element distribution

500 μm 500 μm Cl

(d) Corroded surface of Cu-50G with (e) Corroded Surface of Cu-50G with (f) Surface element distribution of
rectangular textures rectangular textures Cu-50G with rectangular textures

Fig. 13 SEM micrographs (a, b, d, e) and distribution of Cl element (c, f) of corroded surfaces of Cu663 (a~c) and
the Cu-50G with rectangular textures(d~e)
图 13 Cu663合金(a~c)和矩形织构图案的Cu-50G(d~e)的腐蚀表面SEM图像(a，b，d，e)和Cl元素分布图(c，f)