摘要
分析了爆炸粉末烧结技术的高温、高压、瞬时作用及其在新材料开发,特别是在粉末冶金中不可替代的特点和发展前景。从粉末材料状态方程、宏观机理和细观机理出发,综述了爆炸粉末烧结机理的研究进展。最初作为多孔材料本构模型提出的p-模型经过不断修正已能反映孔隙的完全闭合并计入熔化效应;在宏观机理的研究上,除实验外,数值模拟已被用于分析烧结机理及各种实际因素对烧结质量的影响;在细观机理上,综述了对爆炸粉末烧结过程中颗粒间结合机制和沉能方式的由浅入深的认识过程,简单阐述了各种沉能机制,分析了以往研究成果的不足,对其今后的发展方向进行了展望。
Because the technique of explosive consolidation of powders can produce high temperature and high pressure in very short time, it is promising in the exploiture of new materials especially in the consolidation of powders. However, the research of its mechanism is inadequate now. The research of the state equation of powders as well as the macroscopical and microcosmic mechanism of explosive consolidation of powders is discussed in this paper. Finally some suggestions for future development trend are put forward.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2004年第6期566-570,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金(10172025
19972015)
辽宁自然科学基金(2001101075)资助项目
关键词
爆炸烧结
爆炸压实
冲击粉末压实
烧结机理
explosive consolidation
explosive compaction
impact compaction of powders
consolidation mechanism
