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Injection molding, debinding and sintering of 316L stainless steel microstructures

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Abstract

The micro powder injection molding (μPIM) process was used to fabricate metallic microstructures in this paper. The production of 316L stainless steel microstructures arrays with the dimensions of ∅ 100 μm×height200 μmand∅ 60 μm × height 191 μm is presented. Injection molding was conducted on a conventional injection molding machine and silicon mold inserts with vertical sidewall made by deep reactive ion etching (DRIE) were used. Molded parts with microstructures were well obtained after selecting suitable processing parameters based on the feedstock characteristics. Then the molded parts were debound catalytically and sintered. Sintering at different temperature was conducted under vacuum. The effects of sintering temperatures were evaluated based on the polished and etched micrographs of the sintered microstructures. Finally Young’s Modulus of sintered microstructure was evaluated using nano-indenter.

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Authors and Affiliations

  1. School of Mechanical & Aerospace Engineering Nanyang, Technological University, Nanyang Avenue, Singapore, 639798, Singapore

    G. Fu, N.H. Loh & S.B. Tor

  2. Singapore Institute of Manufacturing Technology, 71, Nanyang Drive, Singapore, 638075, Singapore

    B.Y. Tay

  3. Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science & Technology (AIST), 1-2-1, Namiki, Tsukuba, Ibaraki, 305-8564, Japan

    Y. Murakoshi & R. Maeda

Authors
  1. G. Fu
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  2. N.H. Loh
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  3. S.B. Tor
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  4. B.Y. Tay
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  5. Y. Murakoshi
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  6. R. Maeda
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Correspondence to G. Fu.

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PACS

81.20.Ev

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Fu, G., Loh, N., Tor, S. et al. Injection molding, debinding and sintering of 316L stainless steel microstructures. Appl. Phys. A 81, 495–500 (2005). https://doi.org/10.1007/s00339-005-3273-6

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  • DOI: https://doi.org/10.1007/s00339-005-3273-6

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