Evaluation of arc sprayed coatings for erosion protection of tubes in atmospheric fluidised bed combustion (AFBC) boilers

被引：30

作者：

Venugopal, Krishnarao ^{[1
]}

Agrawal, Manish ^{[1
]}

机构：

[1] Bharat Heavy Elect Ltd, Corp R&D Div, Surface Coatings & Treatment Lab, BHEL, Hyderabad 500093, Andhra Pradesh, India

来源：

WEAR | 2008年 / 264卷 / 1-2期

关键词：

arc spray; erosion test; alpha; 1800; Armacor M; Ducor;

D O I：

10.1016/j.wear.2007.05.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Improvement in cored wire composition and fabrication has made possible the application of wear resistant coatings using the attractive twin wire arc thermal spray technique. In the present work, different wear resistant coatings named Alpha 1800, Armacor M and Ducor were deposited using TAFA 9000 wire arc spray equipment for their application in atmospheric fluidized bed combustion boilers. The erosion behaviour of these coatings was evaluated in a test rig and compared with that of carbon steel. Evaluation of coatings up to 600 degrees C indicated that the lowest erosion rates were observed for Alpha 1800 coating, the erosion rate of this coating being 5-10 times lesser than steel base depending upon the test temperature and erodent impact angle. Therefore, Alpha 1800 coating was sprayed on the superheater coils of an AFBC power plant. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：139 / 145

页数：7

共 13 条

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