TY - JOUR
T1 - Multi-braking tribological behavior of PAN-pitch, PAN-CVI and pitch-resin-CVI carbon-carbon composites
AU - Ju, C. P.
AU - Chern Lin, J. H.
AU - Lee, K. J.
AU - Kuo, H. H.
N1 - Funding Information:
The authors are grateful to the National Science Council of the Republic of China for support of this research under Contract No. NSC 85-2216-E-006-017.
PY - 2000/5/15
Y1 - 2000/5/15
N2 - This paper compares the multiple braking behavior of a polyacrylonitrile fiber-pitch matrix (PAN-pitch), polyacrylonitrile fiber-chemical vapor infiltrated (PAN-CVI) matrix and mesophase pitch fiber-phenolic resin-chemical vapor infiltrated hybrid matrix (pitch-resin-CVI) carbon-carbon (C-C) composites. Results indicate that the tribological behavior of all three composites is sensitive to their worn surface morphology. The average friction coefficient of pitch-resin-CVI composite is much higher than that of the other two composites. The pre-transitional type low friction coefficients repeatedly appear in PAN-pitch and PAN-CVI composites, but never in the pitch-resin-CVI composite once the first transition occurs. Compared to pitch-resin-CVI, the high friction coefficients of PAN-pitch and PAN-CVI are much easier to be brought back to their pre-transitional levels by subsequent braking tests. The variations in wear of the three composites have similar trends to those in friction. The higher the friction coefficient during a braking test, the larger the weight loss. Among the three composites, PAN-pitch has the lowest average weight loss and appears to have the most stable performance. The pitch-resin-CVI composite is more susceptible to sliding-induced structural damage than the other two composites.
AB - This paper compares the multiple braking behavior of a polyacrylonitrile fiber-pitch matrix (PAN-pitch), polyacrylonitrile fiber-chemical vapor infiltrated (PAN-CVI) matrix and mesophase pitch fiber-phenolic resin-chemical vapor infiltrated hybrid matrix (pitch-resin-CVI) carbon-carbon (C-C) composites. Results indicate that the tribological behavior of all three composites is sensitive to their worn surface morphology. The average friction coefficient of pitch-resin-CVI composite is much higher than that of the other two composites. The pre-transitional type low friction coefficients repeatedly appear in PAN-pitch and PAN-CVI composites, but never in the pitch-resin-CVI composite once the first transition occurs. Compared to pitch-resin-CVI, the high friction coefficients of PAN-pitch and PAN-CVI are much easier to be brought back to their pre-transitional levels by subsequent braking tests. The variations in wear of the three composites have similar trends to those in friction. The higher the friction coefficient during a braking test, the larger the weight loss. Among the three composites, PAN-pitch has the lowest average weight loss and appears to have the most stable performance. The pitch-resin-CVI composite is more susceptible to sliding-induced structural damage than the other two composites.
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U2 - 10.1016/S0254-0584(99)00260-6
DO - 10.1016/S0254-0584(99)00260-6
M3 - Article
AN - SCOPUS:0343390477
SN - 0254-0584
VL - 64
SP - 196
EP - 214
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
IS - 3
ER -