FRICTION AND WEAR OF PAN PITCH-BASED, PAN CVI-BASED AND PITCH RESIN CVI-BASED CARBON-CARBON COMPOSITES

被引:39
作者
CHEN, JD
JU, CP
机构
[1] Department of Materials Science and Engineering, National Cheng-Kung University, Tainan
关键词
D O I
10.1016/0043-1648(94)90094-9
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In this study we compared the tribological behavior under a high speed condition (1.7 MPa, 2000 rev min-1) of six different carbon/carbon composites including three two-dimensional PAN/pitch composites (TH, TM and TL), one two-dimensional PAN/CVI composite (E), one two-dimensional pitch/resin/CVI composite (A) and one three-dimensional PAN/pitch composite (T3D). Results indicated that, among the five two-dimensional composites, TM and E performed significantly better than the other three composites under the present condition. Both TM and E exhibited a reasonably low friction coefficient (both about 0.4) and a Wear Tate that was an order of magnitude lower than those of the other three. A transition in friction occurred for A, TH and TM, but not for E or TL. The pre-transitional friction coefficients of the three composites were 0.1-0.2, similar to those measured under the low speed condition. During transition, the initially formed thin, smooth lubricative film was suddenly disrupted and turned into a thick powdery debris layer that caused the friction coefficient to rise abruptly to 0.5-0.9. The powdery debris on TM and E was easily ''ironed'' into a smooth and tight lubricative film to cause both friction and wear to decline. The three-dimensional composite T3D was not suitable for high speed applications owing to extensive structural damage.
引用
收藏
页码:129 / 135
页数:7
相关论文
共 10 条
  • [1] AWASTHI S, 1988, ADV CERAM MATER, V3, P449
  • [2] BADAMI DV, 1970, MODERN ASPECTS GRAPH, P224
  • [3] BILL RC, 1978, 2ND P INT C SOL LUBR, P268
  • [4] Hsu S. E., 1989, SUPERALLOYS SUPERCOM, P721
  • [5] MICROSTRUCTURE OF PITCH FIBER PHENOLIC CVI MATRIX CARBON-CARBON COMPOSITE
    JU, CP
    MURDIE, N
    [J]. MATERIALS CHEMISTRY AND PHYSICS, 1993, 34 (3-4) : 244 - 250
  • [6] JU CP, 1993, CERAM ENG SCI P, V14, P1173
  • [7] MICROSTRUCTURE OF WORN PITCH RESIN/CVI C-C COMPOSITES
    MURDIE, N
    JU, CP
    DON, J
    FORTUNATO, FA
    [J]. CARBON, 1991, 29 (03) : 335 - 342
  • [8] RUPPE JP, 1980, CAN AERONAUT SPACE J, V26, P209
  • [9] DESIGN AND ENGINEERING OF CARBON BRAKES
    STIMSON, IL
    FISHER, R
    [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1980, 294 (1411): : 583 - +
  • [10] ZUMGAHR KH, 1987, TRIBOLOGY SERIES, V10, P351