鉄焼結体への銅溶浸による溶浸一般式の検討

概要

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In our previous papers, we presented general equations concerning infiltration through one surface and all surfaces of a model sintered skeleton based on a rectangular parallelopiped having same-radius straight-cylindrical pores crossing at right angles on three dimensions and examined them by some experiments using sintered iron skeletons and water infiltrant and pure silver infiltrant hardly alloyed to iron. The present report, by doing an experiment with sintered iron skeletons and copper base infiltrant easily alloyed reaction to iron, clarifies that these two equations are also applicable in the first half period of the infiltration time, as follows : 1) The general equation of infiltration through a single side of a skeleton is, V=Pr⋅S1⋅(R⋅γLV⋅COSθ/18ηL)1/2⋅t1/2 2) The general equation of infiltration through all surfaces of the skeleton is, V=Pr⋅SA⋅(R⋅γLV⋅COSθ/18ηL)1/2⋅t1/2 where, V : volume of the liquid infiltrated(cm3), P r : porosity of the skeleton, S1: infiltration area of the skeleton(cm2), γLV: surface tension of the liquid(g/s2), R :radius of the pore(cm), θ : contact angle between the skeleton and the liquid(deg), ηL: viscosity of the liquid(g/cm-s), t : infiltrating time(s), SA: 2 (S1+S2+S3)[total surface area of the skeleton] (cm2).
社団法人粉体粉末冶金協会の論文