Papers by Keyword: Iron Base Composite

Abstract: We have successfully synthesized iron base composites reinforced with SiC particles by a dynamic hot-pressing sintering process heating directly by electrical current. The corresponding equipment was improved and the best processing parameters was achieved after a systematically investigation. It was found that the novel sintering process, heating using continuous electrical current and then followed by dynamic temperature preservation using cyclic current, could effectively reduce the sintering time to 300 seconds and greatly improve the properties of the composites. The ultimate tensile strength of the as-prepared SiC_p/Fe composite reaches 918Mpa, with a relative density of 99.8% and a hardness of 480HB.

Abstract: In this paper we try to summarize the research activities of the PM group in the University Carlos III of Madrid. This research group is highly devoted to PM activities covering different fields (both under the point of view of the materials and the processes). In the PM lab powders can be produced by spray pyrolysis, mechanical alloying and water/gas atomization. These powders can be processed by pressing and sintering, powder injection moulding, isostatic pressing,… Sintering facilities cover vacuum and gas controlled sintering. Regarding the materials, in the group we have different research lines covering low alloyed steels, stainless steels, HSS, ferrites, metal matrix composite (Al and Fe base), Ti, intermetallics, ceramics with functional and structural propierties, … In this paper we describe slightly some of the recent developments produced in the group which is not exhaustive (are there a few more) but representative about we are doing at present.