摘要
本文采用正交设计和方差分析的方法,对新型铝青铜结合剂配方和烧结温度进行优化。试验比较新、旧造孔剂在新型铝青铜结合剂和传统的锡青铜结合剂中的造孔效果以及对胎体力学性能的影响。结果表明:随着烧结温度、铝含量以及Fe含量的提高,铝青铜胎体的抗弯强度、硬度和耐磨性均提高。当铝青铜胎体中的Al含量为8%、Fe含量为3%,TiH2为2%时,其合适的烧结温度是800℃。此条件下采用新的造孔剂制备的孔隙率达35%的多孔铝青铜胎体的抗弯强度比原来采用旧造孔剂制备的多孔锡青铜胎体提高了228%。
Optimization of sintering temperature and metal elements such as Al and Fe on the microstructures and properties of aluminum bronze for porous wheel were studied by means of orthogonal test and variance analysis method.Comparison was made on the mechanical properties and pore morphology between the porous aluminum bronze bond by adding new type pore-forming agent A and the porous tin bronze bond by adding old type pore-forming agent B.Experimental results revealed that the transverse rupture strength（TRS）,hardness and wear resistance of the aluminum bronze increased with the increase of the sintering temperature and the amount of Al and Fe.When the aluminum bronze matrix contains 8%Al,3%Fe,2%TiH2,the proper sintering temperature is 800 ℃,under the above conditions both A and B have a porosity volume fraction of 35%,the TRS of the porous aluminum bronze bond fabricated by adding new type A increased by 228% compared to the traditional tin bronze bond fabricated by adding old type B.
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2011年第5期79-83,共5页
Diamond & Abrasives Engineering
基金
国家自然科学基金资助项目(编号51175192)
关键词
铝青铜胎体
烧结温度
金属结合剂
力学性能
aluminum bronze matrix
sintering temperature
metal binder
mechanical properties
