微叠层复合陶瓷刀具材料的设计与制备.doc

文档介绍：
微叠层复合陶瓷刀具材料的设计与制备#
赵岩,邹斌**
(山东大学机械学院先进射流加工中心,济南 250061)
5
10
15
20
25
摘要: 以提高刀具材料的综合力学性能目的,选择两种物理化学相容性较好的
Al2O3+TiN+(Ti,W)C 和 Al2O3+TiC 的组分体系,从材料制备后内部残余应力的分布和控制
角度入手,通过有限元分析的方法研究两种组分互相叠加而制备微叠层复合陶瓷刀具材料的
可能性。研究发现微叠层复合陶瓷刀具材料的层数控制在 100~200um 较优,烧结温度控制
在 1650℃较优。制备的微叠层复合陶瓷刀具材料的综合力学性能得到提高,材料的抗弯强
度有较大的提高,材料的断裂韧性略有提高,硬度改善不大。材料强度提高的原因归因于材
料层间的强化作用。
关键词:机械制造及其自动化;刀具材料;叠层;制备
中图分类号:TH161+.12
Design and Prepraration of Micro-posite
Ceramic Cutting Tool Material
ZHAO yan, Zou bin
(Centre for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering,
Shandong University, Jinan 250061)
Abstract: Aimed to improve the resultant mechanical properties of material, two positions
(Al2O3+TiN+(Ti,W)C 和 Al2O3+TiC) with the good physical and chemical consistency were chosen.
From the view of distribution and controlling of residual stress inside material after sintering, two
compositions materials were laminated each other and a micro-posite ceramic cutting
tool material was prepared by analysis of finite element. It was found that the layer numbers of micro-
posite ceramic cutting tool material was from 100um to 200um and the optimum
sintering temperature was 1650℃. The resultant mechanical properties of micro- posite
ceramic cutting tool material were improved. The flexural strength of materials was increased greatly
and the fracture toughness wa