预合金粉与单质混合粉铜锌烧结体组织与性能研究  

Study onthe microstructure and property of copper zinc sintered body of pre-alloyed powder and elemental mixed powder

作　　者：翟德铭 刘晓燕 ZHAI Deming;LIU Xiaoyan(Puyang Petrochemical Vocational and Technical College Puyang 45700l,China)

机构地区：[1]濮阳石油化工职业技术学院,河南濮阳457001

出　　处：《超硬材料工程》2022年第2期15-19,共5页Superhard Material Engineering

摘　　要：为探究铜锌预合金粉与铜锌单质混合粉热压烧结后组织性能的不同,相同条件下,对它们分别热压烧结制取试样,利用扫描电镜、X射线衍射仪进行显微结构和组织分析,利用洛氏硬度计和万能试验机进行力学性能测试。结果表明,铜锌预合金粉烧结体的组织更加致密均匀;620℃时,铜锌预合金粉和铜锌单质混合粉烧结体的洛氏硬度均达到最大;抗弯强度方面,铜锌预合金粉烧结体在660℃时达到最大值869 MPa,而铜锌单质混合粉烧结体在700℃时达到最大值315 MPa;致密度方面,铜锌预合金粉烧结体在580℃~700℃之间,随温度的升高呈下降趋势,铜锌单质混合粉烧结体致密度比铜锌预合金粉烧结体的更低,且在580℃~620℃之间随温度的升高而升高,高于620℃时随温度的升高而降低。In order to study the different microstructure and property between copper zinc pre-alloyed powder and mixed elemental copper zinc powder after hot pressing, the samples are made under the same condition. The scanning electron microscope and XRD is used to analyze the microstructure and organization. The Rockwell hardness tester and universal testing machine are used for mechanical property test. The experimental result shows the copper zinc pre-alloyed powder sintered body organization is denser and more uniform. At 620℃, the hardnesses of the copper zinc pre-alloyed powder sintered body and mixed with elemental copper zinc powder sintered body both reach the maximum. In terms of flexural strength, the copper zinc pre-alloyed powder sintered body reaches the maximum 869 MPa at 660℃, while the mixed elemental copper zinc powder sintered body reaches the maximum 315 MPa at 700℃. In terms of density, the copper zinc pre-alloyed powder sintered body’s density goes down with the increasing of temperature. The density of the mixed elemental copper zinc powder sintered body is lower than that of copper zinc pre-alloyed powder. The density of the copper zinc pre-alloyed powder sintered body increases with the temperature between 580℃ and 620℃. However, after 620℃, it decreases as the temperature increases.

关 键 词：预合金粉 单质混合粉 组织 性能 

分 类 号：TG11[金属学及工艺—物理冶金] TQ164[金属学及工艺—金属学]