预混合法和预合金法制备Cu-Sn粉末的显微组织和烧结性能  

Study on the microstructure and sintering properties of Cu-Sn powder prepared by the premixing method and prealloying method

作　　者：陈朋飞 莫文剑 易翠 王安东[1] CHEN Pengfei;MO Wenjian;YI Cui;WANG Andong(School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;Jiangsu Jicui Advanced Metal Materials Research Institute Co.,Ltd.,Suzhou 215506,China;Suzhou Cubrazing Materials Co.,Ltd.,Suzhou 215000,China)

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]江苏省集萃金属研究所,江苏苏州215506 [3]苏州铜宝锐新材料有限公司,江苏苏州215000

出　　处：《粉末冶金工业》2024年第1期11-16,共6页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(52175464)。

摘　　要：使用预混合法和预合金法制备了Cu-Sn粉末,研究了Cu-Sn粉末在烧结过程中的显微组织和物相变化规律,同时测试了Cu-Sn粉末在不同温度条件下的烧结性能。实验结果显示,通过预混合法制备的CuSn10、CuSn20粉末烧结态组织由α相和α+δ共析组织组成,而预合金法制备的CuSn10粉末烧结态组织则由单一的α相组成。两种方法制备的粉末在相同条件下烧结后,预混合Cu-Sn粉末的烧结体相对于生坯产生了膨胀,预合金铜锡粉末烧结体则表现为收缩,且预合金Cu-Sn粉末烧结后的断裂强度、含油率和有效含油率均高于预混合粉末。Cu-Sn powders were prepared by pre-mix and pre-alloy process,the microstructure and phase changes of Cu-Sn alloy were studied after sintering,and the sintering properties of Cu-Sn powders prepared by these two methods were tested and compared.The experimental results show that the microstructure of pre-mixing CuSn10 and CuSn20 is composed ofαphase andα+δeutectic tissue after sintering,while that of pre-alloy CuSn10 isαphase.After sintering,the pre-mixed Cu-Sn green compacts expand,on the contrary the pre-alloyed green com-pacts shrinkage.In addition,the strength,oil content and effective oil content of the pre-alloyed Cu-Sn parts are higher than those prepared by the pre-mixing method.

关 键 词：铜锡合金 粉末冶金 物相变化 烧结性能 微观结构 

分 类 号：TF125[冶金工程—粉末冶金]