以Al2O3陶瓷球为对偶材料，借助UMT-2摩擦磨损试验机详细研究温度变化对复合材料干滑动摩擦磨损特性的影响，并用SEM、EDS、奥林巴斯激光共焦扫描显微镜分析铸态SiCp/A356复合材料的高温摩擦磨损行为。结果表明：复合材料的磨损率对温度变化很敏感，在200℃以下，磨损率及其变化较小，以氧化磨损机制为主，属于轻微磨损；当温度达到250℃及以上时，磨损率开始急剧上升，磨损表面出现严重塑性流动痕迹，磨损面上出现磨屑粘着堆积的凸起，同时形成大量的大尺寸的磨屑，此时以粘着磨损机制为主，同时存在少量的氧化磨损。氧化磨损阶段，摩擦因数虽有变化，但相对稳定；但粘着磨损阶段，摩擦因数变得极度不稳定，出现尖锐的峰值。
The influence of temperature change on the dry sliding friction and wear characteristics of as-cast SiCp/A356 composite was investigated on UMT-2 tribometer by using Al2O3 ceramic ball as dual material. The high temperature friction and wear behavior of the composite material were analyzed by SEM, EDS and Olympus confocal laser scanning microscope. The results show that the wear rate of the composites is very sensitive to the change of temperature. When temperature is less than 200 ℃, the wear rate and its change are relatively smaller. The wear mechanism is mainly oxidation wear, which is one form of mild wear. When the temperature reaches or is above 250℃, the wear rate increases quickly. And on the wear surface, there are severe plastic flowing wear traces, the bulge of stacked swarf adhesion and a large number of large sized wear debris. The wear mechanism mainly is adhesive wear and there is a small amount of oxidation wear as well. At oxidation wear stage, although the friction coefficient changes, but it is relatively stable. While at adhesion wear stage, the friction coefficient becomes extremely unstable, and a sharp peak appears.
参考文献
| [1] | 杨月 .高速列车SiCp/A356复合材料制动盘热疲劳评价方法研究[D].北京交通大学,2008. |
| [2] | 刘政;刘小梅.国外铝基复合材料的开发与应用[J].轻合金加工技术,1994(01):7-10. |
| [3] | 樊建中,石力开.颗粒增强铝基复合材料研究与应用发展[J].宇航材料工艺,2012(01):1-7. |
| [4] | 朱龙驹,陈喜红,齐斌,陈振华,陈刚,严红革.高速列车铝基复合材料制动盘及其闸片的研制[J].电力机车与城轨车辆,2006(01):1-5. |
| [5] | COOGAN T P;LATTA D M;SNOW E T;COSTA M .Toxicity and carcinogenicity of nickel compounds[J].CRC Critical Reviews in Toxicology,1989,19:341-384. |
| [6] | 陈体军,YUAN Cheng-ren,郝远,LI Jian.原位自生Sip/ZA27复合材料的磨损性能[J].中国有色金属学报,2008(07):1231-1236. |
| [7] | 陈聪聪,陈刚,严红革,苏斌.颗粒增强铝基梯度复合材料的摩擦磨损性能[J].中国有色金属学报,2011(06):1258-1264. |
| [8] | 冷金凤,姜龙涛,武高辉,田首夫,陈国钦.石墨增强体对SiC/Gr/Al复合材料干摩擦磨损性能的影响[J].稀有金属材料与工程,2009(11):1894-1898. |
| [9] | 杜军,李文芳,刘贯军.富Ce混合稀土对铝基混杂复合材料耐磨性能的影响[J].中国有色金属学报,2006(01):84-88. |
| [10] | 杨忠,李建平,郭永春,杜卫东,夏峰,许吉信.SiCp增强高强耐热铝基复合材料的高温摩擦磨损行为[J].铸造,2006(10):1043-1046. |
| [11] | 彭开萍,陈文哲,钱匡武.Al2O3-SiO2/ZL108复合材料的高温磨损性能[J].中国有色金属学报,2001(z2):86-90. |
| [12] | 李伟;涂铭旌;赵晰明 .氧化铝短纤维增强铝硅合金复合材料高温摩擦磨损性能的研究[J].机械工程材料,1997,21(02):37-39. |
| [13] | 宋延沛,谢敬佩,祝要民,李晓辉.Al2O3P/ZA27复合材料的高温摩擦磨损特性[J].中国有色金属学报,2002(z1):123-126. |
| [14] | 梁艳峰,周敬恩,董晟全,杨通.原位增强Al-4.5Cu合金的高温干摩擦磨损行为研究[J].特种铸造及有色合金,2006(08):515-517. |
| [15] | 戴雄杰.摩擦学基础[M].上海:上海科学技术处出版社,1984 |
| [16] | 金云学;Jung-Moo LEE;Suk-Bong KANG.铝基复合材料的干滑动摩擦磨损特性及磨损机制[J].特种铸造及有色合金,2008:347-350. |
| [17] | 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. |
| [18] | YEN B K;TADASHI ISHIHARA .On temperature- dependent tribological regimes and oxidation of carbon- carbon composites up to 1800[J].WEAR,1996,196:254-263. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%