文章基本信息

标题：EXPERIMENTAL STUDIES ON THE LASER DEPOSITIONS OF THE POWDER MIXTURES ON CYLINDRICAL SURFACES
本地全文：下载
作者：Florin Ciofu ; Alin Nioata
期刊名称：Constantin Brancusi University's Annals, Letters and Social Sciences Serie
印刷版ISSN：1844-6051
出版年度：2008
期号：2
出版社：Academica Brancusi Publisher
摘要：The essence of the process of obtaining of the products by metallic powders aggregation is reprezented by the operations of the formation and sintering which determine the appearance of the, increase and stabilization of the contact surfaces, joined by the realization of the cohesion interatomic connexions among the particles. When during the sintering, it is exceeded the melting temperature of a component or of a phase already formed, it takes place the sintering with the appearance of the liquid phase. In this case the mechanism of the mass transport is strongly accelerated by the capacity of moisturing of the liquid phase and by the dilution - precipitation process, being stressed the contraction of the body and the growing up of the new grains.