Pulse electrode deposition of superhard boride coatings on ferrous alloy

被引：52

作者：

Agarwal, A ^{[1
]}

Dahotre, NB ^{[1
]}

机构：

[1] Univ Tennessee, Inst Space, Dept Mat Sci & Engn, Ctr Laser Applicat, Tullahoma, TN 37388 USA

来源：

SURFACE & COATINGS TECHNOLOGY | 1998年 / 106卷 / 2-3期

关键词：

pulse electrode surfacing (PES); superhard coating; thermodynamics; titanium diboride; transition metal/compound;

D O I：

10.1016/S0257-8972(98)00545-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pulse electrode surfacing (PES) is an effective process for depositing ultrahard, corrosion- and erosion-resistant ceramic coatings on metals. In the present work, a titanium diboride coating deposited on 1018 steel using PES technique has been investigated. An attempt has been made to correlate the thermodynamic predictions and experimental observations. The role of the ceramic-metal interface in the development of these coatings has been studied. A thick, adherent, metallurgically bonded and crack-free coating is obtained. It has been found that Fe intermixes with TiB2 layer and acts as an excellent binder for TiB2. It promotes the composite effect of both hardness and toughness in these coatings and, hence, provides a crack-free coating with the sound interface. (C) 1998 Elsevier Science S.A.

引用

页码：242 / 250

页数：9

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