Evaluation of the influence of surface finishing on the corrosion resistance of HVOF applied inconel 625 coatings on steel

被引：0
|
作者：
Lorenzi M.S.D. [1 ]
Nunes R.M. [1 ]
Falcade T. [1 ]
Clarke T. [1 ]
机构：
[1] Laboratório de Metalurgia Física - LAMEF, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS
来源：
Nunes, Rafael Menezes (rafael.nunes@ufrgs.br) | 2018年 / Universidade Federal de Sao Carlos卷 / 21期
关键词：
Corrosion Resistanc; HVO; Inconel; 62; Residual Stresse;
D O I：
10.1590/1980-5373-mr-2016-0844
中图分类号：
学科分类号：
摘要：
In this work, the corrosion resistance of Inconel 625 coatings applied to AISI 4140 steel plates was evaluated. Coatings were produced by High Velocity Oxygen Fuel (HVOF) by use of two different equipment which use either kerosene (liquid) or propane (gas) as fuel. The resulting coatings were evaluated in two conditions: as-deposited and after a surface finishing process by grinding. Residual stress distributions in the coatings were characterized by X-ray diffraction and their morphology was verified through metallography and roughness measurements. Potentiodynamic polarization corrosion testing complemented their analysis. The results show a strong influence of the surface finishing process on the corrosion performance of the coatings. © 2018 Universidade Federal de Sao Carlos. All rights reserved.
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