论文部分内容阅读
经过优选配方，利用晶界工程技术，采用自制的改性氧化铝粉末，实现了超高强Ａｌ２Ｏ３瓷的低温烧结。烧结体具有较高的硬度，并在晶界上形成钇铝化合物晶界相，强化了晶界，第二相有效地抑制了晶粒的生长。笔者讨论了配方中化学成份对相组织、烧结状态和力学性能的影响，以及它们之间的相互关系，该材料成功地用于陶瓷喷砂嘴的产品开发。
After the preferred formula, the use of grain boundary engineering, the use of homemade modified alumina powder to achieve ultra-high-strength Al2O3 ceramic sintering at low temperature. The sintered body has high hardness and forms the grain boundary phase of yttrium aluminum compound on the grain boundary, strengthens the grain boundary, and the second phase effectively suppresses the grain growth. The author discusses the chemical composition of the formula on the microstructure, sintering state and mechanical properties of the impact, as well as the relationship between them, the material successfully used in ceramic nozzle product development.