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
陈朋飞 1莫文剑 2易翠 3王安东1
作者信息
- 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;苏州铜宝锐新材料有限公司,江苏苏州 215000
- 3. 江苏省集萃金属研究所,江苏苏州 215506
- 折叠
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.
Abstract
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 CuSnl0 and CuSn20 is composed of α phase and α+δ eutectic tissue after sintering,while that of pre-alloy CuSn10 is αphase.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Key words
Cu-Sn alloy/powder metallurgy/phase change/sintering property/microstructure引用本文复制引用
基金项目
国家自然科学基金资助项目(52175464)
出版年
2024
NETL
NSTL
万方数据