TY - JOUR
T1 - Effect of surface condition on tribological behavior of PAN-CVI based carbon-carbon composite
AU - Lee, K. J.
AU - Kuo, H. H.
AU - Chern Lin, J. H.
AU - Ju, C. P.
PY - 1999/1/25
Y1 - 1999/1/25
N2 - This work studied the braking (simulated-stop) behavior of a PAN-CVI-based carbon-carbon composite under different surface conditions. The results indicate that, under the same braking condition, the broken-in (BI) composite exhibited a higher friction coefficient and wear than an as-polished (AP) composite. The composite braked from 2000 rpm always had a larger weight loss and shorter stopping time than from 1400 rpm due to its much higher friction coefficient. Under non-transitional, stably low friction coefficient condition (AP/ 1400 and BI/1400), the sliding speed decreased linearly with time during the entire braking period. For transitional AP/2000 and BI/2000 tests, the deceleration rate varied according to its friction coefficient level. Tribological behavior of the composite was sensitive to, and could be largely interpreted from, the worn surface morphology. A smooth debris film was formed on non-transitional AP/1400 and BI/ 1400 surfaces, while the transitional AP/2000 and BI/2000 surfaces exhibited a mixed types II-III morphology. Much lesser and smaller wear particles were generated from non-transitional AP/1400 and BI/1400 tests than from transitional AP/2000 and BI/2000 tests.
AB - This work studied the braking (simulated-stop) behavior of a PAN-CVI-based carbon-carbon composite under different surface conditions. The results indicate that, under the same braking condition, the broken-in (BI) composite exhibited a higher friction coefficient and wear than an as-polished (AP) composite. The composite braked from 2000 rpm always had a larger weight loss and shorter stopping time than from 1400 rpm due to its much higher friction coefficient. Under non-transitional, stably low friction coefficient condition (AP/ 1400 and BI/1400), the sliding speed decreased linearly with time during the entire braking period. For transitional AP/2000 and BI/2000 tests, the deceleration rate varied according to its friction coefficient level. Tribological behavior of the composite was sensitive to, and could be largely interpreted from, the worn surface morphology. A smooth debris film was formed on non-transitional AP/1400 and BI/ 1400 surfaces, while the transitional AP/2000 and BI/2000 surfaces exhibited a mixed types II-III morphology. Much lesser and smaller wear particles were generated from non-transitional AP/1400 and BI/1400 tests than from transitional AP/2000 and BI/2000 tests.
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U2 - 10.1016/S0254-0584(98)00231-4
DO - 10.1016/S0254-0584(98)00231-4
M3 - Article
AN - SCOPUS:0032662168
VL - 57
SP - 244
EP - 252
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
IS - 3
ER -