Definition of brightness temperature and restoration of true temperature in laser cladding using infrared camera

被引：108

作者：

Doubenskaia, M. ^{[1
]}

Pavlov, M. ^{[2
]}

Grigoriev, S. ^{[2
]}

Smurov, I. ^{[1
]}

机构：

[1] Univ Lyon, Ecole Natl Ingn St Etienne ENISE, DIPI Lab, F-42023 St Etienne 2, France

[2] Moscow State Technol Univ Stankin, Moscow 127994, Russia

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 220卷

关键词：

Laser cladding; Infrared camera; Brightness temperature; Temperature restoration; Cooling rate;

D O I：

10.1016/j.surfcoat.2012.10.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Laser cladding is a surface engineering technique allowing depositing material of a different nature in the form of a powder or a wire on the surface of a metallic part. In this study, the laser cladding technique was used to deposit TiAl6V4 coating on TiAl6V4 substrate to study repairing of worn parts. An infrared camera was applied to measure radiation emission field that was transformed into brightness temperature after camera calibration by a black body. The emissivity value was found using known temperature of liquid-solid transition. True temperature profiles in cladded bead, temperature evolution at liquid-solid transition and cooling rates were found using gray body assumption. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：244 / 247

页数：4

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