Numerical simulation of in-flight particle oxidation during thermal spraying

被引：33

作者：

Zeoli, N. ^{[1
]}

Gu, S. ^{[1
]}

Kamnis, S. ^{[1
]}

机构：

[1] Aston Univ, Sch Engn & Appl Sci, Birmingham B4 7ET, W Midlands, England

来源：

COMPUTERS & CHEMICAL ENGINEERING | 2008年 / 32卷 / 07期

关键词：

CFD; numerical modelling; oxidation; thermal spray; HVOF;

D O I：

10.1016/j.compchemeng.2007.08.008

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Metal powders are widely used for thermal spray coating to improve wear, corrosion and temperature resistance of products. The high thermal profiles endured for sprayed particles give rise to oxidation on the surface of metal powders. Metallic oxides are brittle and undermine the performance of coated products. To understand the growth of oxide layers on in-flight metal powders, an oxidation model is implemented into the Lagrangian formula of particle tracking. The numerical simulation is achieved for a 3D combusting gas flow generated by a high velocity oxygen fuel (HVOF) thermal spray gun. The results are able to demonstrate the correlation between in-flight particle oxidation and operation parameters. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1661 / 1668

页数：8

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