纳米复相陶瓷刀具材料的研究现状

The Present Status of Research on Nano-composite Ceramic Tool Materials

纳米复相陶瓷刀具材料的研究成功有望从根本上解决陶瓷材料的脆性问题,比起传统刀具陶瓷刀具材料,它具有更高的抗弯强度、断裂韧度等力学性能。本文介绍纳米复相陶瓷的增韧补强机理;总结了现阶段以Al2O3、Si3N4、ZrO2和Ti(C、N)四种陶瓷为基体的纳米复相陶瓷刀具材料的显微结构和力学性能之间的关系,并且指出了纳米复相陶瓷刀具材料今后的研究方向。

Mechanical properties of nano-composite ceramics, such as strength and toughness are superior to that of traditional ceramics. Nano-compositing has become an effective way to improve the mechanical properties of traditional ceramics. In this paper, toughening and strengthening mechanisms of nano-composite ceramics are introduced, and the connection between microstructure and mechanical properties of four series of nano-composite ceramics are summarized, whose matrix are alumina, silicon nitride, zirconia and Ti （C, N） ceramics, respectively. Finally, the future research direction of nano-composite ceramics are pointed out.