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

作　　者：王晓莉[1] 王静[2] 伏思静[1] 胡志华[1] 

机构地区：[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

出　　处：《热加工工艺》2011年第16期69-71,74,共4页Hot Working Technology

基　　金：四川省科技厅基金资助项目(2009ZR0112)

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1～3μm,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。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-dynamies, 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.

关 键 词：Fe-TiC表面复合材料 微观组织 耐磨性 耐氧化性 

分 类 号：TB333[一般工业技术—材料科学与工程]