摘要
针对火花等离子体放电法制得粉末中的氧含量高的现状,对高温合金粉末的还原过程进行了探索性研究。结果表明:火花等离子体放电法制得的氧含量较高的镍基高温合金粉末使用CaH2作为脱氧剂,在常压氩气保护下550℃的低温下即可将原始粉末中的氧含量由9.26%(质量分数,下同)降至1.52%,最终粉末中的氧含量主要取决于CaO的去除情况。
Due to the high oxygen content of the superalloy powder produced by a novel Spark Plasma Discharge Process,the reduction process of superalloy powder was studied exploringly.Results show that under the protection of argon by atmospheric pressure at 550 ℃ and with CaH2 as its deoxidizer,the oxygen content of the Ni-based superalloy powder prepared by the novel method is decreased from 9.26% to 1.52%,and the final oxygen content depends mainly on the content of CaO left.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2011年第7期1260-1263,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50771014)
关键词
火花等离子体放电法
高温合金粉末
脱氧
氧含量
Spark Plasma Discharge Process
superalloy powder
deoxidation
oxygen content
