碳化钛颗粒增强铁基表面复合材料的研究
Study on Titanium Carbide Particulate Reinforced Iron Matrix Composite
王晓莉1, 王 静2, 伏思静1, 胡志华1
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作者单位:1. 成都电子机械高等专科学校 机械工程系, 四川 成都 611730; 2. 四川省高校模具技术重点实验室, 四川 成都 611730
中文关键字:Fe-TiC表面复合材料; 微观组织; 耐磨性; 耐氧化性
英文关键字:Fe-TiC surface composite; microstructure; wear resistance; oxidation resistance
中文摘要:采用铸造与原位合成技术制备了TiC颗粒增强铁基表面复合材料,从热力学、微观结构、耐磨性能和抗高温氧化性方面对制备的表面复合材料进行了研究。结果表明:在表面复合材料的基体中生成了细小TiC颗粒,尺寸为1~3 μm,含量约为40vol%;表面复合材料层与灰铸铁之间有良好的冶金结合界面。在干磨损条件下,尤其在重载时,Fe-TiC表面复合材料表现出优异的耐磨性;在900 ℃氧化条件下,Fe-TiC表面复合材料表现出优良的抗氧化性。
英文摘要:TiC particulates reinforced iron matrix surface composite was produced by cast technique and in-situ synthesis technique. The surface composite was investigated from the aspect of thermo-dynamics, microstructure, wear-resistance and oxidation-resistance. The results show that TiC particles with the content of 40% in the size of 1~3 μm generate in iron matrix on the surface of composite. The surface composite and gray iron exhibite excellent metallurgy-bonding. Fe-TiC surface composite shows better oxidation-resistance at 900 ℃ and better wear-resistance under the condition of dry sliding.