摘要
利用氩气雾化方法制备出了Fe48Cr15Ni15Si5.8B2.7Mo6W4Al2Co非晶合金粉末,利用扫描电镜、透射电镜、X射线衍射仪、粒度分析仪和差示扫描量热仪对粉末的微观结构、相组成、粒径分布以及热稳定性进行了分析。研究表明,所制备的粉末结构为非晶纳米晶结构,纳米晶的尺寸约为20～40nm;粉末颗粒形貌呈球形或椭球形,流动性很好。差热试验表明,粉末具有很强的非晶形成能力并且热稳定性非常好;筛分出来的小于47!m目的粉末粒度正态分布比较窄。
The morphology, microstructure, thermal stability, particle size distribution and phase composition of the argon atomized Fe48Cr15Ni15Si5.8B27Mo6W4Al2Co powder were investigated by scanning electron microscope, differential scanning calorimetry （DSC）, particle size analysis X-ray diffractometry and transmission electron microscope. The structure of Fe48Cr15Ni15Si5.8B27Mo6W4Al2Co atomized powder consisted of amorphous matrix and nano-crystallization phase, the size of nanocrystalline was 30-70 nm. The morphology of particle was spherical or elliptical, good mobility. DSC results showed that the power had a strong glass-forming ability and very good thermal stability. The Gaussian distribution of the powder particle smaller than 47μm was relatively narrow.
出处
《中国粉体技术》
CAS
2008年第2期1-4,共4页
China Powder Science and Technology
基金
国家高技术研究发展计划(863计划)资助项目
编号:2002AA331080
关键词
铁基合金
气雾化
非晶纳米晶
热喷涂
iron base alloy
atomization
amorphous and nano-crystalline
thermal spraying
