ZrO2含量对WC基复合材料的力学性能和微观结构的影响

山东大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (1): 92-95.doi:

ZrO₂含量对WC基复合材料的力学性能和微观结构的影响

杨发展¹,艾兴¹,赵军¹,侯建锋²

1.山东大学机械工程学院, 山东济南 250061; 2. 济钢集团机械设备制造厂, 山东济南 250101

收稿日期:2008-05-15 修回日期:1900-01-01 出版日期:2009-02-16 发布日期:2009-02-16
通讯作者: 杨发展

1. School of Mechanical Engineering, Shandong University, Jinan 250061, China；
2. Machinery Manufacturing Plant of Jinan I＆S Group Corporation, Jinan 250101, China

Received:2008-05-15 Revised:1900-01-01 Online:2009-02-16 Published:2009-02-16

摘要/Abstract

摘要：

摘要：以提高WC基复合陶瓷的断裂韧性和硬度为目标,利用ZrO2作为材料粘结剂和增强相,同时引入Al2O3添加相,采用热压烧结工艺成功制备了WC-ZrO2-Al2O3(WZA)复合刀具材料.在此基础上,添加一定量的VC作为晶粒生长抑制剂和助烧剂,以实现材料最大程度的致密化.并对热压后复合材料的硬度、抗弯强度和断裂韧性进行了测试和分析.探讨了ZrO2含量对材料微观结构和力学性能的影响,研究了复合材料断面断裂方式和材料相的组成.

关键词: 关键词:复合材料;力学性能;微观结构;WC

Abstract:

Abstract: Aimed at improving the fracture toughness and hardness of WC matrix composites, ZrO2 and alumina particles

were incorporated into the composite and a new tool material WCZrO2Al2O3 was prepared by hotpress sintering. Also, a

certain amount of VC was added to the composite to suppress grain growth in order to achieve the greatest relative density. The

hardness, bending strength and fracture toughness of the composite were tested. Additionally, the influence of zirconia content

on mechanical properties and the microstructure of WC matrix ceramic materials were analyzed. The fracture mechanism and phase

composition were also investigated.

Key words: Key words: composites; mechanical properties; microstructure; carbide tungsten

中图分类号:

TQ32

杨发展1 ,艾兴1 ,赵军1 ,侯建锋2 . ZrO₂含量对WC基复合材料的力学性能和微观结构的影响[J]. 山东大学学报(工学版), 2009, 39(1): 92-95.

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