用模拟刹车制动的方法探讨了一种炭纤维布叠层炭/炭复合材料在不同制动速度下的摩擦磨损行为, 并用扫描电子显微镜对摩擦表面进行了观察和分析. 研究结果表明: 在5m/s的制动速度下, 该种材料表现出低的摩擦因数, 但随制动速度升高至20m/s时, 摩擦因数迅速升高至最大值0.40; 当制动速度增大到28m/s或30 m/s时, 摩擦因数仅略降低至0.35, 该材料表现出优良的高速高能摩擦性能. 另一方面, 制动速度升高至2 0m/s时, 即摩擦因数最大时, 磨损才变得明显, 而且随制动速度的继续升高, 磨损呈直线增大. 表面显微组织观察表明, 在较低制动速度下, 在摩擦表面产生了薄膜, 对应摩擦因数较低, 磨损小; 在20～25m/s制动速度下, 摩擦表面形成较厚的表面膜层, 对应摩擦因数高, 磨损大; 在28～30m/s制动速度下, 剧烈的摩擦剪切和氧化作用使摩擦表面严重破坏, 表面基质炭氧化严重, 纤维则被拉断或拔出.
参考文献
| [1] | Fitzer E .The future of carbon-carbon composites[J].Carbon,1987,25:163-190. |
| [2] | Stanton G E.New designs for commercial aircraft wheels and brakes[J].Journal of Aircraft,1968(05):73-77. |
| [3] | Awasthi S .Wood J L. C/C composite materials for aircraft brakes[J].Advanced Cramic Materials,1988,3:449-451. |
| [4] | Marsh H;Almansa C;Rodriguez Reinoso F.Carbon fibre/carbon disc br ake: physical,mechanical and chemical properties[A].Newcastle,UK,1996:479-480. |
| [5] | C. Blanco;J. Bermejo;H. Marsh;R. Menendez .Chemical and physical properties of carbon as related to brake performance[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1997(1/2):1-12. |
| [6] | Dhami T L;Bahl Q P;Jain P K .Characterization of carbon-carbon bra ke pad materials[J].Metals Materials and Processes,1993,5(03):169-176. |
| [7] | Murdie N;Ju C P;Don J et al.Microstructure of worm pitch/resin/ CVI C-C composites[J].CARBON,1991,29(03):335-342. |
| [8] | Yen J K;Tadashi Ishihara .The surface morphology and structure of carbon-carbon composites in high-energy sliding contact[J].Wear,1994,174:111-117. |
| [9] | Hutton Toby J.;McEnaney Brian;Crelling John C. .Structural studies of wear debris from carbon-carbon composite aircraft brakes[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(6):907-916. |
| [10] | Yen BK.;Ishihara T. .AN INVESTIGATION OF FRICTION AND WEAR MECHANISMS OF CARBON-CARBON COMPOSITES IN NITROGEN AND AIR AT ELEVATED TEMPERATURES[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(4):489-498. |
| [11] | Yen B K;Tadashi Ishihara .On temperature-dependent tribolog ical regimes and oxidation of carbon-carbon composites up to 1800℃[J].Wear,1996,196:254-263. |
| [12] | Hooton N A;Courtney A L.Effects of oxygen and moisture on carbon- carbon composite frictional behavior[A].Irvine,1977:1-2. |
| [13] | Murdie M;Ju C P;Don J et al.Microstructure of wor m pitch/resin/CVI C-C composites[J].CARBON,1991,29-30:335-342. |
| [14] | Murdie N;Wood M.Characterization of C-C composite friction films[A].Newcastle,UK,1996:415-416. |
| [15] | Yen B K;Tadashi Ishihara .The surface morphology and structu re of carbon-carbon composites at high-energy sliding contact[J].Wear,1994,174:111-117. |
| [16] | Hutton Toby J.;McEnaney Brian;Crelling John C. .Structural studies of wear debris from carbon-carbon composite aircraft brakes[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(6):907-916. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%