Model of Compaction Process of a Porous Powder Elastic-Viscous Material at Electric Sintering
O. I. Raichenko
I.M. Frantsevich Institute for Problems of Materials Sciences, NAS of Ukraine, 3 Academician Krzhizhanovskoho Str., UA-03680 Kyiv-142, Ukraine
Received: 07.10.2015; final version - 20.04.2016. Download: PDF
An electric sintering process is studied in the theoretical macrorheology terms. A compact is the Kelvin—Voigt elastic-viscous body. The basis of the study is Second Newton’s law (momentum equation). The constitutive equation of densification of an elastic-viscous compact at electric sintering is deduced. Investigation shows that the increase in current density at electrothermics intensifies the compaction due to stronger reduction of viscosity than elasticity.
Key words: constitutive equation, electric sintering, elastic-viscous material, decrease of viscosity and elasticity, electrothermics.
PACS: 46.35.+z, 61.43.Gt, 81.20.Ev, 81.40.Ef, 83.10.Gr, 83.50.Uv, 83.60.Bc
Citation: O. I. Raichenko, Model of Compaction Process of a Porous Powder Elastic-Viscous Material at Electric Sintering, Metallofiz. Noveishie Tekhnol., 38, No. 5: 635—645 (2016) (in Russian)