熔体温度和雾化压力对氩气雾化镍基高温合金粉末的影响  

Influence of Melt Temperature and Atomization Pressure on Argon-atomized Nickel-based Superalloy Powder

作　　者：钟伟杰 焦东玲[1] 邱万奇[1] 刘仲武[1,2] ZHONG Weijie;JIAO Dongling;QIU Wanqi;LIU Zhongwu(School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,China;Dongguan Hyper Tech Co.,Ltd.,Dongguan 523808,Guangdong,China)

机构地区：[1]华南理工大学材料科学与工程学院,广州510640 [2]东莞市精研粉体科技有限公司,广东东莞523808

出　　处：《材料导报》2023年第10期143-148,共6页Materials Reports

基　　金：东莞市引进创新科研团队资助项目(201536000200027)。

摘　　要：本工作采用氩气雾化法制备镍基高温合金粉末,通过调控雾化参数,研究了熔体温度(1585℃、1618℃、1653℃)和雾化压力(3.0 MPa、3.2 MPa、3.5 MPa)对粉末粒度、氧含量及空心度的影响。结果表明,熔体温度对粉末空心度有重要影响,而对其他粉末特性没有明显影响。熔体温度升高时,粉末空心度先减小后增加。雾化压力不仅影响空心度,而且影响粉末粒度和氧含量。雾化压力增大时,粉末粒度显著降低,氧含量与空心度先减少后增加。在熔体温度为1618℃、氩气雾化压力为3.2 MPa时可以获得质量较好的合金粉末。In this work,the nickel-based superalloy powders were prepared by argon atomization.By changing the atomization parameters,the effects of melt temperature(1585℃,1618℃,and 1653℃)and atomization pressure(3.0 MPa,3.2 MPa,and 3.5 MPa)on the particle size,oxygen content and hollowness of the prepared powders were investigated.The results indicated that the melt temperature has an important effect on the hollowness of the powder,but no significant effect on the other powder properties.With the temperature increasing,the hollowness of the powder first decreases and then increases.However,the atomization pressure affects not only the powder hollowness but also the particle size and oxygen content.With the atomization pressure increasing,the powder particle size decreases significantly,and the oxygen content and hollowness first decrease and then increase.The high quality powders can be obtained at the melt temperature of 1618℃and the atomization pressure of 3.2 MPa.

关 键 词：高温合金粉末 熔体温度 雾化压力 氧含量 空心度 

分 类 号：TF1[冶金工程—冶金物理化学]