摘要
根据改进的共沉降数学模型,以W颗粒的粒度分布为已知条件,对原始Y2O3粉末进行沉降分级和级配。采用共沉降法和热压烧结工艺制备成分分布指数P分别为1.0,0.7,0.3和0.1的4种Y2O3-W连续梯度材料。结果表明:通过对分级后Y2O3粉末的级配可制备出粒度满足设计要求的Y2O3粉体。通过显微组织观察和硬度测试结果,进一步验证了材料梯度层的连续性。
The raw Y2O3 powder was classified and graded based on modified co-sedimentation mathematical model,using the size distribution of W particles as the known condition.Y2O3-W continuous graded materials with the composition distribution index Pvalues of 1.0,0.7,0.3and 0.1were prepared by co-sedimentation and hot-pressing.The results show that the Y2O3 powder consistent with the design requirements can be obtained by graduation method.The gradient continuity of materials can be verified by microstructure observation and hardness testing.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2017年第9期66-71,共6页
Journal of Materials Engineering
基金
国家自然科学基金资助项目(51621091
51472060)
教育部新世纪人才计划资助项目(NCET-13-0177)
作者简介
通讯作者：王玉金（1974-），男，教授，博士，从事专业：钨基复合材料、超高温陶瓷材料、复合材料的低温制备及复合材料的热处理等，联系地址：黑龙江省哈尔滨市南岗区一匡街1号哈尔滨工业大学科学园C3栋516室（150001），E—mail：wangyuj@hit．edu．cn
