212 Sintering parameters on fabrication of a micro-hole by powder metallurgy method

概要

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A new method to fabricate a micro-hole in metals is proposed in this work. Refractory metal powders such as Mo and very fine glass fibers of 100 μm in diameter were used for the fabrication. It utilizes thermal properties mismatch between the metal powder and the fiber. Sintering at a temperature between their melting points causes glass to evaporate leaving a targeted shape of hole and densify the metal powder. Green compacts were prepared at various compressive loads and then subjected to sintering at temperatures below the melting points of the metal powder. The inspected hole after sintering exhibited circular cross-section and straightness of the hole. The inspection of the sintered part confirmed that the method is promising to fabricate micro-holes in metals.
一般社団法人日本機械学会の論文
2009-08-25