崔大伟,曲选辉

• 1:潍坊学院机电系
• 2:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用粉末注射成形工艺制备了无镍高氮奥氏体不锈钢(0Cr17Mn11Mo3N),研究了喂料的流变行为,注射工艺及烧结工艺。结果表明:64 vol%气雾化0Cr17Mn11Mo3粉末与适量的粘结剂(65 wt%石蜡+30 wt%高密度聚乙烯+5 wt%硬脂酸)混合后的喂料具有较好的流变性能;最佳注射工艺参数为注射压力75～95 MPa,相应的注射温度为160～170℃;提高烧结温度有利于提高烧结体的密度,但是对提高氮含量不利,而增加烧结氮气氛压力可以获得较高的氮含量,但是不利于提高烧结体密度,最佳的烧结工艺为0.1 MPa氮气压力下1300℃烧结2 h,此时烧结体相对密度可以达到99%,氮含量可达到0.78%。

关键词(KeyWords)： 高氮;无镍;粉末注射成形;奥氏体不锈钢

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(50634010);; 国家“863”计划项目(2006AA032502)

作者(Author): 崔大伟,曲选辉

DOI: 10.13289/j.issn.1009-6264.2010.07.028

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