Comparative High-Temperature Corrosion Behavior of Ni-20Cr Coatings on T22 Boiler Steel Produced by HVOF, D-Gun, and Cold Spraying

被引：0
作者：
Gagandeep Kaushal
Niraj Bala
Narinder Kaur
Harpreet Singh
Satya Prakash
机构：
[1] Punjabi University,Mechanical Engineering Section, Yadavindra College of Engineering
[2] Mechanical Engineering Department,undefined
[3] Baba Banda Singh Bahadur Engineering College,undefined
[4] Indian Institute of Technology Ropar,undefined
[5] Indian Institute of Technology Roorkee,undefined
来源：
Metallurgical and Materials Transactions A | 2014年 / 45卷
关键词：
Oxide Scale; HVOF; Cold Spray; Thermal Spray Process; NiCr2O4;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To protect materials from surface degradations such as wear, corrosion, and thermal flux, a wide variety of materials can be deposited on the materials by several spraying processes. This paper examines and compares the microstructure and high-temperature corrosion of Ni-20Cr coatings deposited on T22 boiler steel by high velocity oxy-fuel (HVOF), detonation gun spray, and cold spraying techniques. The coatings’ microstructural features were characterized by means of XRD and FE-SEM/EDS analyses. Based upon the results of mass gain, XRD, and FE-SEM/EDS analyses it may be concluded that the Ni-20Cr coating sprayed by all the three techniques was effective in reducing the corrosion rate of the steel. Among the three coatings, D-gun spray coating proved to be better than HVOF-spray and cold-spray coatings.
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页码：395 / 410
页数：15
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