Particle-size, size distribution and dislocations in nanocrystalline tungsten-carbide

被引：104

作者：

Ungár, T

Borbély, A

Goren-Muginstein, GR

Berger, S

Rosen, AR

机构：

[1] Eotvos Lorand Univ, Dept Gen Phys, H-1445 Budapest, Hungary

[2] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 11卷 / 01期

基金：

美国国家科学基金会; 匈牙利科学研究基金会;

关键词：

D O I：

10.1016/S0965-9773(99)00023-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ball-milled WC powder has been compacted and sintered. The particle size has been determined by transmission and scanning electron microscopy and high resolution X-ray diffraction. The X-ray diffraction profiles were evaluated for particle size and dislocation densities by the recently developed procedures of modified Williamson-Hall plot and modified Warren-Averbach method. Log-normal particle size distributions have been obtained by a newly developed numerical method from the size parameters provided by X-ray line profile analysis. The size distributions obtained by TEM and X-rays are compared and discussed. The dislocation density was found to be 1.9 x 10(17) m(-2) in the ball-milled powder which decreases to 2.0 x 10(15) m(-2) after annealing. (C) 1999 Acta Metallurgica Inc.

引用

页码：103 / 113

页数：11

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