Porous TiN Ceramics Fabricated by Carbothermal Reduction Method

Yuan Lu; Jian Feng Yang; Zhi Liang Chen; Jian Jun Han; Jing Jing Li; Ke Yun

doi:10.4028/www.scientific.net/MSF.745-746.667

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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Porous TiN Ceramics Fabricated by Carbothermal...

Porous TiN Ceramics Fabricated by Carbothermal Reduction Method

Abstract:

Porous TiN ceramics with high porosity and uniform pore structure was prepared following the carbothermal reduction reaction between TiO₂ and carbon. Influences of sintering additives and particle size of TiO₂ on the microstructure and mechanical properties of porous TiN ceramics were investigated. Microstructure and mechanical properties of porous TiN ceramics were studied by XRD, SEM and three-point bending measurement. XRD analysis proved that the TiN phase has completely formed after reaction. In addition, SEM analysis showed that the resultant porous TiN ceramics were composed of fine grains with uniform pore structure. The addition of La₂O₃ not only accelerated the densification of porous TiN ceramics, but also decreased the porosity and increased the flexural strength. With a decrease in TiO₂ particle size, the linear shrinkage increased and the porosity decreased accordingly.

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Materials Science Forum (Volumes 745-746)

Pages:

667-672

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.667

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Online since:

February 2013

Authors:

Yuan Lu, Jian Feng Yang, Zhi Liang Chen, Jian Jun Han, Jing Jing Li, Ke Yun

Keywords:

Carbothermal Reduction, Porous TiN Ceramics, Sintering Additives

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