摘要
设计4种不同有机粘结剂,分别对合金元素Mn、石墨进行粘结处理,制备Fe-0.5Mn-0.5C预混合钢粉。研究4种粘结剂对预混合钢粉合金元素与石墨的粘结率、预混合钢粉的流动性、松装密度、压坯密度的影响。并通过对粉末表面基团的表征,研究高分子粘结剂与铁基体间的相互作用方式。结果表明：以丙烯酸类树脂制备的预混合钢粉工艺性能最好,其流动速率为24.3 s/50 g松装密度为24.3 s/50 g,在600 MPa压力下的压坯密度为3.03～3.23 g/cm3粘结剂中的极性基团与铁基粉末通过氢键作用相吸附。
Fe-Mn-C premixed steel powders were prepared by using 4 kinds of different polymer binders on Mn and graphite. The effects of binders addition on binding ratio, flow ability, apparent density, compact density of the premix were studied. By characterizing the powder surface groups, the effect between polymer binder and iron base powder was investigated. The results show that the physical properties of the powder prepared by acrylic resin are the best, the flow rate is 24.3 s/50 g, the apparent density is 3.03-3.23 g/cm3, and the compact density is 7.04-7.10 g/cm3 at the press pressure of 600 MPa. The polar groups of the binder is bonding with iron powder by hydrogen bond.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2016年第3期482-487,共6页
Materials Science and Engineering of Powder Metallurgy
基金
国家高技术研究发展计划资助项目(2013AA031102)
