Author:
Zhang Feifei,Zhang Henglei,Yang Zhongyuan,Du Fengzhen
Abstract
Abstract
Wear-resistant layer of cemented carbide on steel can improve its wear properties in particular areas, such as oil drilling. Herein, the WC-TiC-Co/steel joint, the WC-TiC-Co wear-resistant layer covers the steel surface, is fabricated by infiltration brazed, using Cu-Zn filler alloy and WC particles as solder. The microstructure and mechanical properties of as-obtained joint are investigated. The Longitudinal interface has good bonding and the existence of transverse gaps are surveyed on interface between WC-TiC-Co and solder. The element Mapping test shows the distribution of Co element in WC-TiC-Co block is uneven. And the present of element interdiffusion forms the diffusion layer in the joining zone between base materials and solder. The hardness and phase tests indicate that Co3Fe7, W2C phase were produced during brazing, but there are few impacted on the hardness by Co3Fe7, W2C phase.
Subject
General Physics and Astronomy
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