Effect of laser melting on plasma sprayed WC-12 wt.%Co coatings

被引：43

作者：

Afzal, M. ^{[1
,4
]}

Khan, A. Nusair ^{[2
]}

Ben Mahmud, T. ^{[4
]}

Khan, T. I. ^{[3
,4
]}

Ajmal, M. ^{[1
]}

机构：

[1] UET, Lahore 54890, Pakistan

[2] Inst Ind Control Syst, Rawalpindi, Pakistan

[3] Qatar Univ, Dept Mech & Ind Engn, Doha, Qatar

[4] Univ Calgary, Dept Mech & Mfg Engn, Calgary, AB T2N 1N4, Canada

来源：

SURFACE & COATINGS TECHNOLOGY | 2015年 / 266卷

关键词：

Air plasma spraying; WC-12%Co coating; Laser treating; Micro-hardness; Microstructure; Sliding wear; CARBIDE COMPOSITE COATINGS; TUNGSTEN CARBIDE; WEAR-RESISTANCE; WC COATINGS; BEHAVIOR; MICROSTRUCTURE; STEEL; CLAD;

D O I：

10.1016/j.surfcoat.2015.02.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tungsten carbide powder with 12% Co was deposited on AISI 321 stainless steel substrate by air plasma spraying. The coating was produced at 130 mm standoff distance. The coated samples were melted using a CO2 laser with an inert gas shroud. Four different laser speeds from 100 mm/min to 250 mm/min were used to melt the coatings. After laser melting the treated surfaces were characterized and compared with as sprayed surfaces. It was observed that the laser melting process produced defect free surfaces. The results showed that the thicknesses of the melted surfaces and wear resistance varied as a function of laser speed. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：22 / 30

页数：9

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