کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
615354 | 881441 | 2011 | 8 صفحه PDF | دانلود رایگان |
The tribological behavior of steel and sapphire sliding on a sputtered MoS2+Ti coating was studied in ultra-high vacuum as a function of temperature over the range of 4–300 K. The coefficient of kinetic friction for the steel/moly interface was determined to be approximately 0.05 from room temperature to 240 K, and increased monotonically to 0.125 at 4 K. The sapphire/moly friction coefficient was measured to be 0.15±0.05 at room temperature and increased monotonically to 0.25 at 4 K. We also analyze in detail the flash temperature due to frictional heating at the sliding contacts. Flash heating is a particularly strong effect at cryogenic temperatures.
► Sliding friction of molybdenum disulfide thin film.
► Cryogenic, UHV measurements with sapphire and steel counterfaces.
► Monotonic increase in friction with decreasing temperature.
► Flash heating increases interface temperature, especially at low temperatures.
Journal: Tribology International - Volume 44, Issue 12, November 2011, Pages 1819–1826