Comparative wear in titanium diboride coatings on steel using high energy density processes

被引：38

作者：

Agarwal, A ^{[1
]}

Dahotre, NB ^{[1
]}

机构：

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

来源：

WEAR | 2000年 / 240卷 / 1-2期

关键词：

TiB2; coating; Pulse Electrode Surfacing (PES); Laser Surface Engineering (LSE); wear resistance; coefficient of friction;

D O I：

10.1016/S0043-1648(00)00357-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A comparison between the tribological properties of titanium diboride (TiB2) deposited using high energy density processes such as Pulse Electrode Surfacing (PES) and Laser Surface Engineering (LSE) has been made. The wear resistance of TiB2 coated surface is higher than AISI 1010 steel. The wear resistance of the LSE coated TiB2 coating is even better than that of the PES deposited TiB2 coating. Coefficient of friction values for LSE coated TiB2 coating (mu = 0.6) are lower than PES deposited TiB2 coating (mu = 0.7). Wear occurs in PES deposited TiB2 coating by brittle fracture and attrition type mechanisms whereas mixed adhesive-abrasive wear in LSE deposited TiB2 coating occurs by localized plastic deformation of the soft matrix phase Fe from a "composite" layer on the surface. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：144 / 151

页数：8

共 21 条

[1] Synthesis of boride coating on steel using high energy density processes: Comparative study of evolution of microstructure [J].