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Fabrication and sintering of nano TiNx and its composites

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2006, 16(3), pp.101-105
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Sungjin Kim 1 Lee, Sang-Woo 1 Heung-Sik Woo 2 Kyeong-Sik Cho 1 Sungbum Park 3 박승식 1 이혜정 1 안증호 4 김동식 1 라노 1

1금오공과대학교
2동국대학교
3
4안동대학교

Accredited

ABSTRACT

We fabricated the nano TiNx by making of reaction between titanium powder and Si3N4 during planetary milling. The TiNx powder was sintered by spark plasma sintering machine after mixing with 50 wt% of titanium powder, and the sintered body was heat-treated at 850 o C in order to investigate its hardness property at the elevated temperature. We analyzed crystal structure by XRD. We observed the peaks of TiN0.26 and TiN after 10 hours milling, and we observed TiN peak mainly after 20 hours milling. The reacted particle size distribution was investigated by FE-SEM. Increase of milling time, the size of reacted particles was decreased and the 10~20 nm size of TiNx on the surface of titanium and TiNx was observed after 20 hours milling. The micro-Vickers hardness of mixed sintered body was about 1050 kgf/mm 2 .

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