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Proceedings Paper

Changes in mechanical properties of laser-doped metals
Author(s): Maria Walczak; Ryszard Pawlak; Tomasz Raczynski
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Paper Abstract

Modern methods of treatment of the surface layer allow improvement in mechanical properties of metals (an increase in the life and resistance to wear of mechanical elements as well as other properties, e.g., electrical ones). Owing to the very large temperature gradients (approximately 108 K/m) and great rates of crystallization obtained, the laser treatment method is the most efficient of them all. The range of changes in mechanical properties obtained through such treatment cannot be achieved by other methods. The method of laser doping of metal surface layers offers especially distinct advantages. This is related to obtaining various and atypical heterogeneous systems in these layers. In the paper the results have been discussed of the treatment of the surface layer using a Nd-YAG pulsed laser. Studies have been carried out for metals of significance in electrical engineering: Ag, W, Mo -- as base metals and Sn, Ni, Pd and Au -- as a doping material. Special attention has been paid to changes in the microhardness of the layers obtained compared with the properties of base metals and doping metals. The results point to strong possibilities of modification of microhardness through laser doping.

Paper Details

Date Published: 1 March 1995
PDF: 5 pages
Proc. SPIE 2202, Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing, (1 March 1995); doi: 10.1117/12.203263
Show Author Affiliations
Maria Walczak, Technical Univ. of Lodz (Poland)
Ryszard Pawlak, Technical Univ. of Lodz (Poland)
Tomasz Raczynski, Technical Univ. of Lodz (Poland)


Published in SPIE Proceedings Vol. 2202:
Laser Technology IV: Research Trends, Instrumentation, and Applications in Metrology and Materials Processing
Wieslaw L. Wolinski; Zdzislaw Jankiewicz; Jerzy K. Gajda; Bohdan K. Wolczak, Editor(s)

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