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Surface impregnation by particle injection — laser impregnation
Optics & Laser Technology, 1988Abstract Wear resistance can be improved by laser impregnation — the surface layer of a base material is melted and hard wear resistant carbide particles are injected into the melted pool. Previously, experiments were mainly performed in a vacuum chamber at a laser power of 10 kW. In this paper, results are presented of experiments carried out with 1.
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Feminist Media Studies, 2005
Many cultural and critical race theorists have established that the epidemic of teen pregnancy in the US is a socially constructed phenomenon, one that arose with the national economic and cultural...
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Many cultural and critical race theorists have established that the epidemic of teen pregnancy in the US is a socially constructed phenomenon, one that arose with the national economic and cultural...
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