International Journal of Powder Metallurgy 

About: International Journal of Powder Metallurgy is an academic journal. The journal publishes majorly in the area(s): Powder metallurgy & Sintering. It has an ISSN identifier of 0888-7462. Over the lifetime, 501 publications have been published receiving 5814 citations.

Selective laser sintering of metals and ceramics

Abstract: Solid Freeform Fabrication has been used to describe collectively a growing number of toolless manufacturing techniques. One of these process Selective Laser Sintering, in which a part is generated in layers from powder using a computer-controlled laser/scanning apparatus and power feed system. An overview of the basic principles of SLS machine operation is given. Two binding mechanisms are described for powder which becomes thermally activated by the scanning laser beam: viscous flow and melting of a low-melting-point phase in mixed powders of differing chemistries

Cold compaction and sintering of titanium and its alloys for near-net-shape or preform fabrication

Abstract: The conventional cold-compaction-and-sinter powder metallurgy (PM) approach offers an efficient solution to the near-net shape or preform fabrication of titanium and its alloys for cost reduction and improved chemical homogeneity and refined microstructures. The methods for compacting titanium powder are similar to those used for other ductile powders. The high-purity titanium in the most ductile state is similar to annealed copper in terms of elastic modulus, hardness, elongation, and ultimate tensile strength. The properties of titanium are sensitive to the impurity level, in particular to nitrogen, oxygen, carbon, and iron. Hardness is a convenient measure of the quality of a titanium sponge product. Dilatometric studies of the sintering of titanium-nickel alloys show similar observations and confirm that oxide films on titanium powder surfaces do not need to be reduced by the atmosphere or disrupted by a chemical additive.

The influences of Porosity on the Characteristics of Sintered Materials

Abstract: Examen des causes de la presence de pores dans les materiaux frittes. Analyse des mecanismes de densification et obtention des lois correspondantes entre la pression appliquee et la porosite des produits obtenus. Influence de celle-ci sur les proprietes physiques (electriques, magnetiques), les caracteristiques mecaniques, la durete, la rugosite superficielle et le comportement en oxydation des materiaux

Powder metallurgy processing of thermal management materials for microelectronic applications

Abstract: Thermal management materials are needed to dissipate heat associated with high performance microelectronic circuits. Challenges arise both with the material selection and the component fabrication. Powder metallurgy techniques provide a means of fabricating high quality composite systems with tailored thermal properties. Mathematical analysis has identified several candidate P/M materials, many already familiar to the P/M community, including W-Cu and SiC-Al. In the near term, W-Cu is a viable heat sink and packaging material while SiC-Al will be the primary composite for avionic applications. However, major opportunities are apparent in systems such as AlN-Cu and SiC-Cu, but these will require novel fabrication routes. This presentation outlines the design of thermal management materials, identifies the possible property combinations, and isolates processing options for some target applications