Mechanical Properties and Electrical Conductivity of TiN-Al2O3 Nanocomposites

Abstract

Abstract: TiN-Al₂O₃ nanocomposite powders were prepared by ball milling with nano TiN and Al₂O₃ powder as starting materials. The sintered bodies were prepared by hot-pressing. The effects of TiN nanoparticles on the mechanical
properties and electrical conductivity of TiN-Al2O3 nanocomposites were studied. Experimental results show that the addition of 15vol% TiN
increases the bending strength of hot-pressed Al₂O₃ from 370MPa to 690MPa and the fracture toughness from 3.4MPa·m^1/2 to 5.1MPa·m^1/2,
respectively. The electrical resistivity of nanocomposites decreases with increasing amount of TiN and reaches a minimum (6.5×10^-3Ω·cm)
for the nanocomposite with 25vol% TiN.

Key words: nano TiN, alumina, mechanical properties, electrical conductivity

CLC Number:

TQ174

LI Jing-Guo,GAO Lian,QUO Jing-Kun. Mechanical Properties and Electrical Conductivity of TiN-Al₂O₃ Nanocomposites[J]. Journal of Inorganic Materials.

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Mechanical Properties and Electrical Conductivity of TiN-Al₂O₃ Nanocomposites

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