Recycling of WC-Co from scrap materials

被引：10

作者：

Sampath, A ^{[1
]}

Sudarshan, TS ^{[1
]}

机构：

[1] Mat Modificat Inc, Fairfax, VA 22031 USA

来源：

POWDER METALLURGY | 2002年 / 45卷 / 01期

关键词：

Cobalt - Compaction - Cutting tools - Electrodeposition - Mechanical variables measurement - Microhardness - Nanostructured materials - Particle size analysis - Recycling - Tungsten carbide - X ray diffraction analysis;

D O I：

10.1179/003258902225001588

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

WC-Co scrap generated by the cutting tool industries was electrochemically broken down to cobalt, which was deposited at the cathode and a mixture of tungsten oxide and tungstic acid was collected at the anode with an overall recovery efficiency of about 90%. The tungsten oxide/tungstic acid was reduced to produce nanostructural tungsten powders, which were subsequently carburised and chemically coated with cobalt to produce WC-Co powders. The powders synthesised were characterised for purity and size. The WC-Co powders, thus obtained were consolidated to near theoretical densities using a novel plasma pressure compaction ((PC)-C-2) technique. The microhardness of the consolidated sample was measured to be 2200 HV, which is 20% higher than the reported literature values. (C) 2002 IoM Communications Ltd.

引用

页码：21 / 24

页数：4