In a previous paper, the general equations on 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 in itself, were introduced, and examined experimentally with sintered iron skeletons and the water infiltrant. The equations obtained are as follows:
1) The general equation of infiltration through a single side of a skeleton is,
V=P_r⋅S₁⋅(R⋅γ_LV⋅COSθ/18η_L)^1/2⋅t^1/2
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).
2) The general equation of infiltration through all surfaces of the skeleton is,
V=P_r⋅S_A⋅(R⋅γ_LV⋅COSθ/18η_L)^1/2⋅t^1/2
where, SA:2 (S₁+S₂+S₃) [total surface area of the skeleton] (cm²).
In this report, it is found that both of the above equations also hold good at the first period of infiltration time in several experiments which are carried out with the sintered iron skeletons and the pure silver infiltrant.