論文

査読有り
2017年

Effect of Heating Conditions on Surface Modification of Titanium with a Mixture of Iron, Graphite and Alumina Powders

MATERIALS TRANSACTIONS
  • Yasuhiro Morizono
  • ,
  • Sadahiro Tsurekawa
  • ,
  • Takateru Yamamuro
  • ,
  • Sohshi Yoshida
  • ,
  • Yuka Kawano

58
4
開始ページ
600
終了ページ
605
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.2320/matertrans.M2016294
出版者・発行元
JAPAN INST METALS

We developed a new surface modification technique called iron-powder pack (IPP) treatment. A layer of titanium carbonitride, Ti(C, N), was formed on the surface of a titanium sample embedded in a mixture of iron, graphite, and alumina powders and held around 1273 K in a nitrogenfiow. In this work, IPP treatment using a 4: 6: 3 (volume ratio) mixture of iron, graphite, and alumina powders was applied to titanium plates, and the effects of the heating temperature and nitrogen gasfiow rate on the microstructures near the titanium surface were investigated. The Ti(C, N) layer was observed on the titanium plate heat-treated at 1173 K for 3.6 ks at a nitrogenfiow rate of 0.5 L/min. This layer became uniform and thick as the heating temperature increased. At 1373 K, a Ti(C, N) layer with a thickness of more than 30 mu m that increased the hardness of the titanium surface to an HV value of about 1500 was obtained. In addition, an increase in the nitrogenfiow rate increased the surface hardness further. Spherical titanium powder was treated at 1273 K to examine the growth of the Ti(C, N) layer. The layer thickness increased with the holding time. Because the average diameter of the spherical powder was unchanged after heating, the Ti(C, N) layer grew toward the inside of the titanium via the diffusion of carbon and nitrogen from the powder mixture and the atmosphere.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.2320/matertrans.M2016294
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000399828900015&DestApp=WOS_CPL
ID情報
  • DOI : 10.2320/matertrans.M2016294
  • ISSN : 1345-9678
  • eISSN : 1347-5320
  • Web of Science ID : WOS:000399828900015

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