【作者】 陈文怡； 周建； 高洪；

【Author】 CHEN Wen-yi, ZHOU Jian, GAO Hong (State Key Lab. of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070,China)

【机构】 武汉理工大学材料复合新技术国家重点实验室；

【摘要】 用PT316不锈钢粉末为原料,采用行星式高能球磨机球磨获得了不锈钢超细粉末。应用X-ray 衍射分析、扫描电子显微镜(SEM)、比表面积测试 (BET法)等分析技术对球磨粉末的微观结构进行了分析。结果表明:随着球磨时间的增加,不锈钢粉末的粒度明显降低,形成由大量微细晶粒构成的团聚粉体, X-ray衍射图形也有明显的变化,最终可获得晶粒尺度<100nm的PT316不锈钢纳米晶粉。球料比的增加,有助于不锈钢粉末细化速度的提高,可用更少的时间获得不锈钢超细粉末。更多还原

【Abstract】 High-energy ball mill method was used to treat the stainless steel powder5 the effects of treat parameters (ball-raw materials rate, treatment time) on the microstructure and phase composite were studied. X- ray diffraction, SEM and the BET method were used to evaluate the microstructure of treated samples. The results showed that with increasing in ball mill time, the particle size of stainless steel powder decreases obviously; surface features of powder were changed significantly. X- ray diffraction calculation results showed that the particle size of stainless steel powder have been 28nm after 120h ball mill treatment, the BET analysis results agree with the X- ray diffraction calculation results.更多还原