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Homogeneous TiB 2 Ceramics Achieved by Electric Current‐Assisted Self‐Propagating Reaction Sintering
Author(s) -
Salamon David,
Eriksson Mirva,
Nygren Mats,
Shen Zhijian
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01856.x
Subject(s) - materials science , microstructure , sintering , ceramic , spark plasma sintering , self propagating high temperature synthesis , electric current , homogeneous , titanium , titanium diboride , boron , ignition system , metallurgy , current (fluid) , composite material , thermodynamics , physics , chemistry , organic chemistry , quantum mechanics
Using spark plasma sintering techniques, homogeneous microstructures of titanium diboride (TiB 2 ) ceramics were obtained by sintering of boron and titanium powder mixtures. The results show that an additional electric current is essential for achieving a large number of evenly distributed ignition points that ensure that the self‐propagating reaction simultaneously takes place within the entire volume. The effects of the electric current, the use of Mg additions, and the heating rates on the resulting TiB 2 ceramic densities and microstructures are discussed.