Gas nitriding mechanism in titanium powder injection molded products

Toshiko Osada, Hideshi Miura, Takanobu Yamagami, Kazuaki Nishiyabu, Shigeo Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Gas surface treatment is considered to be especially effective for Titanium because of its high reactivity. In this study, we investigated the gas nitriding mechanism in titanium sintered parts produced by metal powder injection molding (MIM) process. In MIM process, gas nitriding can be surface-treated subsequently after debinding and sintering process. Then, the microstructure and nitrogen content of sintered MIM parts are considered to be greatly influenced by not only nitriding conditions but also sintered conditions. In this study, the effects of sintering time on microstructure such as nitrided layer thickness and hardness was investigated. Focus was given to the effects of specimen size on nitriding process, because the size of micro metal injection molding (μ-MIM) product is so small and the specific surface of that product is so large that the mechanical and functional properties can be subject to change by nitriding.

Original languageEnglish
Title of host publicationProgress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)
PublisherTrans Tech Publications Ltd
Number of pages4
EditionPART 1
ISBN (Print)0878494197, 9780878494194
Publication statusPublished - 2007
Event2006 Powder Metallurgy World Congress and Exhibition, PM 2006 - Busan, Korea, Republic of
Duration: Sept 24 2006Sept 28 2006

Publication series

NameMaterials Science Forum
NumberPART 1
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752


Other2006 Powder Metallurgy World Congress and Exhibition, PM 2006
Country/TerritoryKorea, Republic of

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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