TY - JOUR
T1 - Tribological properties of Ni-17.5Si-29.3Cr alloy at room and elevated temperatures
AU - Bi, Qinling
AU - Liu, Weimin
AU - Yang, Jun
AU - Ma, Jiqiang
AU - Xue, Qunji
PY - 2010/1
Y1 - 2010/1
N2 - The tribological properties of Ni-17.5Si-29.3Cr alloy against Si3N4 were studied on a ball-on-disc tribotester between room temperature and 1000 °C. The effects of temperature on the tribological properties of the alloy were investigated. The worn surfaces of the alloy were examined using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results indicated that the tribological behavior of the alloy expressed some differences with increase in testing temperature. At low and moderate temperatures (below 800 °C), the alloy showed excellent wear and oxidation resistances, and the wear rate of the alloy remained in the magnitude of 10-5 mm3/Nm; but at elevated temperature (800-1000 °C), the wear and oxidation resistances decreased, and the wear rate of the alloy increased up to 10-4 mm3/Nm. The friction coefficient decreased from 0.58 to 0.46 with the rising of testing temperature from 20 to 600 °C, and then remained nearly constant. The wear mechanism of the alloy was mainly fracture and delamination at low and moderate temperatures, and transformed to adhesive and oxidation at elevated temperatures.
AB - The tribological properties of Ni-17.5Si-29.3Cr alloy against Si3N4 were studied on a ball-on-disc tribotester between room temperature and 1000 °C. The effects of temperature on the tribological properties of the alloy were investigated. The worn surfaces of the alloy were examined using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results indicated that the tribological behavior of the alloy expressed some differences with increase in testing temperature. At low and moderate temperatures (below 800 °C), the alloy showed excellent wear and oxidation resistances, and the wear rate of the alloy remained in the magnitude of 10-5 mm3/Nm; but at elevated temperature (800-1000 °C), the wear and oxidation resistances decreased, and the wear rate of the alloy increased up to 10-4 mm3/Nm. The friction coefficient decreased from 0.58 to 0.46 with the rising of testing temperature from 20 to 600 °C, and then remained nearly constant. The wear mechanism of the alloy was mainly fracture and delamination at low and moderate temperatures, and transformed to adhesive and oxidation at elevated temperatures.
KW - High temperature
KW - Ni-17.5Si-29.3Cr alloy
KW - Tribological properties
UR - http://www.scopus.com/inward/record.url?scp=74249102178&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2009.05.014
DO - 10.1016/j.triboint.2009.05.014
M3 - 文章
AN - SCOPUS:74249102178
SN - 0301-679X
VL - 43
SP - 136
EP - 143
JO - Tribology International
JF - Tribology International
IS - 1-2
ER -