Scientific approaches to problems of mixtures sintering | Zendy

А. П. Савицкий | Zendy

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Scientific approaches to problems of mixtures sintering

Author(s) -

А. П. Савицкий

Publication year - 2005

Publication title -

science of sintering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.309

H-Index - 25

eISSN - 1820-7413

pISSN - 0350-820X

DOI - 10.2298/sos0501003s

Subject(s) - sintering , basis (linear algebra) , materials science , dissolution , ceramic , liquid phase , phase (matter) , process (computing) , metallurgy , computer science , thermodynamics , mathematics , chemical engineering , chemistry , engineering , physics , geometry , organic chemistry , operating system

Existing theories cannot convincingly explain relationships observed during sintering of mixtures and do not always help solve practical problems of sintering metal materials and ceramics. The main weakness of the known theories is insufficient attention to the phenomenon of alloy formation and its effect on volume changes of compacts, faulty ideas regarding driving forces for the sintering process, the mistaken mechanism of dissolution of solid phase in liquid, and the inaccurate mechanisms of growth and densification during the sintering of mixtures. Besides, obsolete theories are developed, as a rule, on the basis of a two-partial model that does not permit taking into account the skeleton structure of a powder body and the presence of interparticle pores in it. Essentially fresh concepts in the theory of mixture sintering are formulated and defined in this paper. The new approaches eliminate the drawbacks and discrepancies in the existing theories and provide the scientific basis for solid state and liquid phase sintering of mixtures

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