Engineering Research Equipment Grant: Auger Electron Spect-rometer and Upgrade of a Fourier Transform Infrated Spectro-photometer

开发低散热柴油或柴油和燃气轮机组合发动机需要能够在500摄氏度以上的温度下运行的润滑剂和机器表面。如果使用固体润滑剂，很难进行补充。一种替代方法是通过催化分解或还原磨损表面本身上的燃烧气体来生成润滑碳。目前正在使用超高真空(UHV)系统对这一过程进行研究，以获得定义良好的表面和条件。该系统设计用于就地分析摩擦、磨损、表面概率(通过光学轮廓术)、环境和解吸气体(通过质谱仪)以及表面吸附(通过窗口发射红外傅里叶光谱FTIR)。对于磨损表面的准确定义，配备专用仪器的俄歇电子能谱(AES)是必不可少的。对于表面动力学测量，FTIR需要升级。当以乙烯为试验气体时，含镍合金或含镍陶瓷的摩擦因数可重复降低6倍或以上。

The development of a low heat rejection diesel or combination diesel and gas turbine engine requires lubricants and machine surfaces capable of operation at temperatures of 500 degrees C and above. If solid lubricants are used, it is dificult to replenish them. One method of replacement is the generation of lubricant carbon by catalytic dissociation or reduction of combustion gases on the wear surfaces themselves. A study of such a process has been underway using an ultrahigh vacuum (UHV) system to obtain well-defined surfaces and conditions. This system was designed to allow in-place analysis of friction, wear, surface probile (by optical profilometry), environmental and desorbed gases (by mass spectrometry), and surface adsorbates (by emission infrared Fourier spectroscopy FTIR, through windows). For the exact definition of the wear surface, Auger electron spectroscopy (AES) with a dedicated instrument is essential. For surface kinetic measurements the FTIR needs upgrading. When ethylene was used as a test gas the friction coefficient for nickel-containing alloys or ceramics provided with a transfer film of nickel-containing alloy was reproducibly reduced by factors of six or more.