Fabrication of Micro Porous Metal Components by Metal Injection Molding Based Powder Space Holder Method

A novel production method for the metal components with micro-sized porous structures has been developed by applying the powder space holder (PSH) method to the metal powder injection molding (MIM) process.This production method is compatible with widespread applications with high functionality such as heat sinks, electrodes and medical implants and so on.These applications can benefit from the advantages provided by micro-porous metal components with complicated shapes using most kinds of metal powder.The aim of this study is to clarify the effects of material combinations and production conditiorfs on the pore formation and some physical properties of sintered porous metals.The green compacts were molded via uniaxial hot pressing for an experiment using various porous compounds which were prepared by changing the combinations in size of stainless steel 316L powder and polymethylmethacrylate (PMMA) space holding particle.Afterwards they were sintered at various temperatures after thermal debinding.It was confirmed that the size of metal powder and space holding particle together with the sintering temperature were main 'Correspondence to Prof. K.

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