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Comparative Studies on Sintering Behavior of Self‐Propagating High‐Temperature Synthesized Ultra‐Fine Titanium Diboride Powder
Author(s) -
Khanra Asit Kumar,
Godkhindi Mahadev Malhar,
Pathak Lokesh Chandra
Publication year - 2005
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.1551-2916.2005.00236.x
Subject(s) - sintering , materials science , titanium diboride , titanium , self propagating high temperature synthesis , metallurgy , composite material , microstructure , ceramic
Sintering behavior of nano‐sized titanium diboride (TiB 2 ) powder prepared by a self‐propagating high‐temperature synthesis (SHS) technique was compared with that of the commercially available powder. The SHS‐made powder showed excellent sinterability at low temperatures and a maximum of 97% densification was achieved at 2223 K, whereas the identically sintered commercial powder could only be densified to ∼86% at 2223 K. The estimated activation energies for sintering of 35±0.07 kJ/mole and 46±0.7 kJ/mole for the SHS and commercial powder, respectively, indicated the possibility of a different mechanism during sintering.