Fracture resistant super hard materials and hardmetals composite with functionally designed microstructure

被引：56

作者：

Fang, ZZ

Griffo, A

White, B

Lockwood, G

Belnap, D

Hilmas, G

Bitler, J

机构：

[1] Smith Int Inc, Houston, TX 77205 USA

[2] Univ Missouri, Rolla, MO 65409 USA

[3] RTW Kennamet Inc, Rogers, AR 72757 USA

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2001年 / 19卷 / 4-6期

关键词：

polycrystalline diamond; cemented tungsten carbide; functionally designed materials; metal matrix composite; fibrous monolith ceramics; rock drill bit;

D O I：

10.1016/S0263-4368(01)00031-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polycrystalline diamond and other hard materials are widely used in earth boring, mining, and construction tool applications. Chipping and fracture resistance is often improved by various means at the expense of hardness and wear resistance. This trade-off between wear resistance and chipping resistance hinders the development of hard and super hard materials for many industrial applications. A new approach, characterized as "hard materials composites with functionally designed microstructure" including polycrystalline diamond and cemented tungsten carbide, is discussed. The functionally designed microstructure offers enhanced chipping resistance and toughness without significantly sacrificing wear resistance. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：453 / 459

页数：7

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