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Effects of cobalt on structure and properties of TiC0.3N0.7-TiB2 matrix composite ceramics prepared by self-reactive spray forming method

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Abstract

In order to improve the structure and properties of TiC0.3N0.7-TiB2 composite ceramics produced by self-reactive spray forming, TiC0.3N0.7-TiB2 composite ceramics were produced based on the main system of Ti-B4C-C (sucrose as the precuror of carbon)-5 wt.%Al, and the cobalt powders with different mass ratios were added. The effects of cobalt on the structure and properties of the ceramic perform samples were studied. The results show that after the addition of cobalt, the main phases of the sample are still consisted of TiC0.3N0.7 and TiB2, and there are a few TiCo white new phase, meanwhile TiC0.3N0.7 grains are refined, and its relative density, hardness and fracture toughness are improved obviously. With increasing of the content of cobalt, TiC0.3N0.7 grains are refined while TiB2 grain sizes increase, and the relative density and fracture toughness of performs increases while its hardness first decrease and then increase. So the properties of the preforms could be improved by adding cobalt to Ti-B4C-C-5 wt.%Al spray forming system.

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Authors and Affiliations

  1. Institute of Advanced Materials, Ordnance Engineering College, Shijiazhuang, 050003, China

    Wenbin Hu, Long Zhang, Jianjiang Wang, Minghui Ye & Hongfei Lou

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  1. Wenbin Hu
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  2. Long Zhang
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  3. Jianjiang Wang
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  4. Minghui Ye
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  5. Hongfei Lou
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Correspondence to Wenbin Hu.

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Hu, W., Zhang, L., Wang, J. et al. Effects of cobalt on structure and properties of TiC0.3N0.7-TiB2 matrix composite ceramics prepared by self-reactive spray forming method. Rare Metals 30 (Suppl 1), 619–623 (2011). https://doi.org/10.1007/s12598-011-0358-z

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  • DOI: https://doi.org/10.1007/s12598-011-0358-z

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