水雾化Fe-Cu-Ni预合金粉末在串珠中的应用  

Application of Fe-Cu-Ni pre-alloy powder prepared by water atomization in beads

作　　者：朱叶飞 李伟祥 赵小超 丁义良 张世锋 杨栋 武玺旺 ZHU Yefei;LI Weixiang;ZHAO Xiaochao;DING Yiliang;ZHANG Shifeng;YANG Dong;WU Xiwang(Henan Huanghe Whirlwind Co.,Ltd.,Changge 461500,China;Xuchang University,Xuchang 461000,China)

机构地区：[1]河南黄河旋风股份有限公司,河南长葛461500 [2]许昌学院,河南许昌461000

出　　处：《超硬材料工程》2024年第5期33-37,56,共6页Superhard Material Engineering

基　　金：国家重点研发计划(增材制造用复合金刚石粉体制备技术研究2021YFB3701802);中原学者工作站(ZYGZZ2020001)。

摘　　要：金刚石串珠制备中,单质粉末配方易出现烧结温度不稳定、元素偏析、显微组织不均匀、强度硬度低等问题,胎体粉末的预合金化能有效改善此类问题。将胎体配方中的主要成分Fe、Cu、Ni采用水雾化技术制备成预合金粉。结果发现预合金粉在烧结过程中更稳定,同时各元素在烧结过程中未出现偏析现象,提高了烧结体的致密度、硬度及强度。并形成了韧性与脆性相结合的显微结构,在提高串珠锋利度的同时又增加了其耐磨度,进而提高了串珠的整体性能,延长了串珠的使用寿命。In the preparation of diamond beads,the elemental powder formula is prone to problems such as unstable sintering temperature,element segregation,uneven micro-structure,and low strength and hardness.Pre-alloying of matrix powder can effectively improve these problems.The main components Fe,Cu,and Ni in the matrix formula were prepared into pre-alloyed powder using water atomization technology.The results showed that the pre-alloyed powder was more stable during the sintering process,and there was no segregation phenomenon of each element during the sintering process,which improved the density,hardness,and strength of the sintered body.And a microstructure combining toughness and brittleness was formed,which not only improved the sharpness of the beads,but also increased their wear resistance,thereby improving the overall per-formance of the beads and extending their service life.

关 键 词：预合金粉 烧结 金刚石 串珠 

分 类 号：TF124.5[冶金工程—粉末冶金] TQ164[冶金工程—冶金物理化学]