Laser Treatment of Thick Films Based on Powder Composites of Nickel Boride

The thermophysical parameters (coefficients of thermal and temperature conductivity, coefficient of reflection of the laser beam) of resistive thick films (RTF) of powder composites based on Ni^sub 3^B and glass were determined. Coefficients of thermal conductivity were calculated using the theory o...

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Published inPowder metallurgy and metal ceramics Vol. 41; no. 3-4; pp. 119 - 122
Main Authors Paustovskii, Alexander V, Rud', Boris M, Tel'nikov, Eugenii Ya, Vlasenko, Alexander I, Shelud'ko, Vladimir E
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.03.2002
Subjects
Borides
Dispersions
Lasers
Mathematical analysis
Particulate composites
Reflection
Studies
Thermal conductivity
Thick films
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Summary:The thermophysical parameters (coefficients of thermal and temperature conductivity, coefficient of reflection of the laser beam) of resistive thick films (RTF) of powder composites based on Ni^sub 3^B and glass were determined. Coefficients of thermal conductivity were calculated using the theory of general conductivity for a multicomponent system. The coefficient of diffuse reflection was calculated from the indicatrix of dispersion of the laser radiation. The parameters obtained were used to calculate the dependence of surface temperature of a thick film under the action of pulsed laser radiation on the duration and energy of the impulse and the radius of the laser spot.[PUBLICATION ABSTRACT]
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ISSN:1068-1302
1573-9066
DOI:10.1023/A:1019822607800