【摘 要】
:
The effect of plasma and brine lubricants on the friction and wear behavior of UHMWPE were studied by using the geometry of a Si3N4 ball sliding on a UHMWPE dis
【机 构】
:
Institute of Reliability Engineering,Center for Tribology Incorporated
论文部分内容阅读
The effect of plasma and brine lubricants on the friction and wear behavior of UHMWPE were studied by using the geometry of a Si3N4 ball sliding on a UHMWPE disc under patterns of uni-directional reciprocation and bi-directional sliding motions. The worn surface and wear particles produced in these two lubricants were analyzed. Sliding motion pattern affected the friction coefficients lubricated with plasma, while seldom affected that lubricated with brine. UHMWPE lubricated with plasma showed about half of the wear rate of that lubricated with brine. The two rates were 0.75 pg/m and 2.19 pg/m for the two motion patterns, respectively. However, wear particles generated in plasma included a greater amount of small particles, compared to that in brine. In uni-directional reciprocation, the main wear mechanism is ploughing both in plasma and in brine. In bi-directional sliding modes, the significant characteristic is ripples on the worn surface in plasma, while there are oriented fibers on the worn surface in brine.
其他文献
随着市场经济的快速发展,我国的产业结构也在不断调整和优化,实现产业结构的合理化和高度化。合理化是为了实现各产业之间的协调发展,高度化是为了提高产业结构的发展水平,但
AIM: To study the relationship between hepatitis B virus (HBV) DNA levels and liver histology in patients with chronic hepatitis B (CHB) and to determine the pr
AIM: To evaluate the effects of extrahepatic collaterals to the liver on liver damage and patient outcome after embolotherapy for the ruptured hepatic artery ps
AIM: To investigate if there is a correlation between electrical activity measured by electrogastrography (EGG)and contractile activity of the stomach as measur
AIM: To examine whether visceral fat is associated with non-alcoholic steatohepatitis (NASH),to assess for parameters associated with visceral adiposity and to
Objective: To investigate the expressions and molecular mechanism of Ets-1 mRNA, and TGFβ1 and c-Met proteins in the pathogenesis, progression of lung cancer b
本文提出当前信用社金融内部审计存在的问题,并针对性地给出解决问题的建议.
AIM: To evaluate attenuating properties of N-acetylcysteine (NAC) on oxidative stress and liver pathology in rats with non-alcoholic steatohepatitis (NASH).METH
AIM: To evaluate plasma levels of nitrite/nitrate (NOx),soluble Fas (sFas) antigen, tumor necrosis factor alpha(TNF-α) and interleukin-6 (TL-6) in patients wit
AIM: To establish a scoring system for predicting the incidence of postoperative complications and mortality in general surgery based on the physiological and o