Conferences

EFFECT OF CONSTRAINTS ON THE EVOLUTION OF SMALL AND LARGE PORES WITH ACCOUNT OF VACANCY FLOW IN SINTERING OF BIPOROUS MATERIALS

V.Skorokhod,
   

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2017, #07/08
http://www.materials.kiev.ua/article/2402

Abstract

A modified continuum model for the sintering of biporous material is proposed. Along with the viscous flow of the matrix resulting from the sintering potential, the vacancy flow from small to large pores is considered. The capabilities of the modified theory to consider the above phenomena are used to predict and explain the effect of constraints on local porosity increase and instability in the sintering process. Potential ways for using the results obtained are identified


BIMODAL PORE SIZE DISTRIBUTION, CONSTITUTIVE EQUATIONS, RHEOLOGY, SINTERING, VACANCIES