| 粉末冶金TiAl基合金排气门的研制 |
| |
| 引用本文： | 欧阳鸿武,刘咏,贺跃辉,黄伯云.粉末冶金TiAl基合金排气门的研制[J].汽车技术,2002(1):26-28. |
| |
| 作者姓名： | 欧阳鸿武 刘咏 贺跃辉 黄伯云 |
| |
| 作者单位： | 粉末冶金国家重点实验室 |
| |
| 摘 要： | 与常用的钢质排气门相比，TiAl基合金排气门的耐高温，抗磨损，抗氧化和导热性等性能更好，而且质量减轻一半，本采用元素Ti,Al粉末混合，冷等静压和径向热压相结合的工艺，制备出高径比为10．7，密度为3.79g/cm^3的粉末冶金TiAl基合金汽车发动机排气门，为制备合格的TiAl基合金排气门探索了一条新的途径，同时指出，要大范围应用TiAl在排气门必须降低其成本。
|
| 关 键 词： | 汽车 发动机 TiAl基合金 排气门 制造 元素粉末冶金法 |
| 文章编号： | 1000-3703(2002)01-0026-03 |
| 修稿时间： | 2001年7月3日 |
Development of Powder Metallurgy TiAI Base Alloy Exhaust Valve |
| |
| Ouyang Hongwu et al.Development of Powder Metallurgy TiAI Base Alloy Exhaust Valve[J].Automobile Technology,2002(1):26-28. |
| |
| Authors: | Ouyang Hongwu |
| |
| Institution: | Ouyang Hongwu et al |
| |
| Abstract: | Compared with common steel exhaust valve, TiAl base alloy exhaust valve has hatter high-tempera-ture resistance,better wear resistance,better oxidation resistance and better thermal conductance,and of a half masslighter. One powder metallurgy TiAl base alloy engine exhaust valve for motor vehicle, whose ratio of height to diam-eter is 10.7 and density is 3.79 g/cm3,has been made from mixed powder of Ti and Al with a cold isostaticpressing process in conjunction with a radial hot pressing process. One new method to make qualified TiAl base al-loy exhaust valve has been found. It is indicated at the same time that cost reduction has to be done to apply Ti-Al base alloy exhaust valve widely. |
| |
| Keywords: | Powder metallurgy Ti alloy Exhaust valve |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
