铸造2018，Vol.67Issue(5)：404-408,413,6.
TiB2颗粒尺寸和质量分数对原位自生TiB2/Al复合材料耐磨性能的影响
Effect of TiB2 Particle Size and Mass Fraction on Wear Resistance of In-Situ TiB2/Al Composites
摘要
Abstract
Different mass fractions of TiB2/Al composites were fabricated by using in-situ method. The TiB2 particles were the only particles that existed stably in TiB2/Al composites by the thermodynamics calculation and experiment analysis. The size of TiB2 particles was analyzed by laser particle sizer after the particles were extracted from the composties. The friction and wear properties of TiB2/Al composites were investigated by friction and wear tester, SEM, and so on. The results show that the diameter of TiB2 particles increases with the increase of TiB2 content. For the same mass fraction of TiB2/Al composites, the mean friction coefficient reduces with the increase of the loads, but the wear loss increases rapidly. On the other hand, both the mean friction coefficient and wear loss decrease first and then increase with the increase of mass fraction of TiB2 particles under the same loads. Subsequently, the worn surface morphology of composites was analyzed, and it is revealed that the wear mechanism is changed from adherence abrasion to both adherence abrasion and abrasive modes during the wear test.关键词
TiB2/Al复合材料/原位合成法/TiB2颗粒尺寸/摩擦磨损特性Key words
TiB2/Al composites/in-situ synthesis/TiB2 particle size/friction and wear properties分类
矿业与冶金引用本文复制引用
屈敏,刘鑫,崔岩,刘峰斌,焦志伟,刘园..TiB2颗粒尺寸和质量分数对原位自生TiB2/Al复合材料耐磨性能的影响[J].铸造,2018,67(5):404-408,413,6.基金项目
国家自然基金资助项目(51604012, 51575004) （51604012, 51575004）
北京市自然科学基金项目(3162010) （3162010）
北京市优秀人才培养项目(2014000020124G010). （2014000020124G010）
