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Precursor Morphology Effects in Combustion‐Synthesized and Dynamically Consolidated Titanium Carbide and Titanium Boride
Author(s) -
Kecskes Laszlo J.,
Niiler Andrus,
Kottke Thomas
Publication year - 1993
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.1151-2916.1993.tb06596.x
Subject(s) - materials science , titanium , boron carbide , combustion , boron , boride , chemical engineering , titanium carbide , porosity , metallurgy , fabrication , morphology (biology) , carbon fibers , consolidation (business) , composite material , chemistry , composite number , organic chemistry , medicine , alternative medicine , business , accounting , pathology , biology , engineering , genetics
The combustion synthesis/dynamic consolidation (CS/DC) technique was applied to titanium–carbon and titanium–boron mixtures with different initial precursor carbon and boron powder morphologies. The evolution of the CS/DC product structure was investigated by analyzing and comparing the combustion synthesis products following three fabrication process steps: reacted loose powders, reacted green compacts, and reacted green compacts which were dynamically consolidated shortly after the synthesis. In all cases, the purity of the precursor carbon and boron powders was found to affect the residual porosity of the products. However, the dependence of the resultant product grain morphology on the morphology of the precursors was not as straightforward. Correlations between the respective product structures and possible reaction mechanisms are discussed.