TY - JOUR
T1 - Microstructures and properties in aluminum nitride-titanium nitride composite ceramics
AU - Tajika, Masahiko
AU - Matsubara, Hideaki
AU - Rafaniello, William
N1 - Funding Information:
This work has been entrusted by NEDO as part of the Synergy Ceramics Project under the Industrial Science and Technology Frontier (ISTF) Program promised by AIST, MITI, Japan. The authors are members of the Joint Research Consortium of Synergy Ceramics.
PY - 1999/11
Y1 - 1999/11
N2 - Aluminum nitride-titanium nitride (AlN-TiN) composites (TiN content; 0, 5 and 10 vol%) were prepared using mixtures of fine AlN and TiN powders. Pressureless sintering of the AlN-TiN powder mixtures was done at 1850 °C for 1 to 20 h. using yttrium oxide powder as a sintering aid. Sintered samples achieved almost full density. While AlN grains grew isotropically with sintering time, TiN particles in the composite maintained their small and nearly round shape. The TiN grains were present at both grain boundary and within AlN grains. Heat treatment of these composites caused both microstructural change and improvements in thermal diffusivity. Inhibition of AlN grain growth was greatest for the 10 vol.% TiN-AlN composites.
AB - Aluminum nitride-titanium nitride (AlN-TiN) composites (TiN content; 0, 5 and 10 vol%) were prepared using mixtures of fine AlN and TiN powders. Pressureless sintering of the AlN-TiN powder mixtures was done at 1850 °C for 1 to 20 h. using yttrium oxide powder as a sintering aid. Sintered samples achieved almost full density. While AlN grains grew isotropically with sintering time, TiN particles in the composite maintained their small and nearly round shape. The TiN grains were present at both grain boundary and within AlN grains. Heat treatment of these composites caused both microstructural change and improvements in thermal diffusivity. Inhibition of AlN grain growth was greatest for the 10 vol.% TiN-AlN composites.
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U2 - 10.1016/S0167-577X(99)00120-2
DO - 10.1016/S0167-577X(99)00120-2
M3 - Article
AN - SCOPUS:0033311237
SN - 0167-577X
VL - 41
SP - 139
EP - 144
JO - Materials Letters
JF - Materials Letters
IS - 3
ER -