Friction Behavior and Wear Analysis of SiC Sliding Against Mo in SO2, O2 and H2S at Gas Pressures Between 4 and 40 Pa
Friction Behavior and Wear Analysis of SiC Sliding Against Mo in SO2, O2 and H2S at Gas Pressures Between 4 and 40 Pa
复制标题
4~40 Pa 气压下 SO2、O2 和 H2S 中 SiC 与 Mo 的摩擦行为和磨损分析
DOI：
10.1080/10402009608983617
复制
发表时间：
1996
影响因子：
2.1
通讯作者：
J. M. Martín
中科院分区：
文献类型：
--
作者：
I. L. Singer;T. Mogne;C. Donnet;J. M. Martín
摩擦试验是在真空室中进行的，在暴露于4 - 40 Pa的压力下的气体期间和之后，SiC销相对于Mo平板滑动。用扫描电子显微镜（SEM）、能量色散X射线分析（EDX）和透射电子显微镜（TEM）对磨损痕迹、疤痕和碎片进行了非原位分析。在SO2和O2气体中，稳态摩擦系数在0.10到0.15之间，在H2S气体中小于0.01;相反，在<10−5 Pa下进行的H2S暴露后的摩擦系数约为1。在SO_2和O_2试验中形成的磨损形貌的SEM/EDX表明，Mo上的痕迹和SiC上的疤痕被小的（1-5 μm）片状Mo颗粒所覆盖和包围。相比之下，在H2S中形成的痕迹有很长的延伸，表面光滑，碎片很少。从销和平面收集的磨损碎屑的TEM也发现只有金属Mo颗粒。润滑剂提供的气体进行了讨论方面的第三体产品形成…
Friction tests were performed in an ultrahigh vacuum chamber with an SiC pin sliding against an Mo flat during and after exposure to gases at pressures between 4 and 40 Pa. Wear tracks, scars and debris were, analyzed ex situ with scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX) and transmission electron microscopy (TEM). Steady-stale friction coefficients were between 0.10 and 0.15 in SO2 and O2 gases and less than 0.01 in H2S gas; in contrast, tests performed at <10−5 Pa after H2S exposure gave friction coefficients of about 1. SEM/EDX of wear features formed in SO2 and O2 tests showed that tracks on Mo and scars on SiC were covered and surrounded by small (1–5 μm), flakelike Mo particles. In contrast, tracks formed in H2S had long stretches, of a smoothly burnished surface with very little debris. TEM of wear debris collected from both pin and flat also found only metallic Mo particles. The lubricant afforded by the gases is discussed in terms of the third-body products formed...