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Injection molding of micro-porous titanium alloy with space holder technique

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Abstract

The powder space holder (PSH) and powder injection molding (PIM) methods have an industrial competitive advantage because they are capable of the net-shape production of micro-sized porous parts. In this study, micro-porous Ti6Al4V alloy (Ti64) parts were produced by the PSH-PIM process. Ti64 alloy powder and spherical polymethylmethacrylate (PMMA) particles were used as a space holder material. After molding, binder debinding was performed by thermal method under inert gas. Debinded samples were sintered at 1250°C for 60 min in a vacuum (10−4 Pa). Metallographic studies were conducted to determine densification and the corresponding microstructural changes. The surface of sintered samples was examined by SEM. The compressive stress and elastic modulus of the micro-porous Ti64 samples were determined. The effects of fraction of PMMA on the properties of sintered micro-porous Ti64 alloy samples were investigated. It was shown that the fraction of PMMA could be controlled to affect the properties of the Ti alloy.

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Authors and Affiliations

  1. Institute Graduate Studies Pure and Applied Sciences, Marmara University, 34722, Göztepe-Istanbul, Turkey

    Gülsah Engin

  2. National Metrology Institute, TUBITAK, P.K.54, 41470, Gebze-Kocaeli, Turkey

    Bülent Aydemir

  3. Technical Education Faculty, Materials Department, Marmara University, 34722, Göztepe-Istanbul, Turkey

    H. Özkan Gülsoy

  4. Materials Technologies Research Institute, Tubitak-MRC, 41470, Gebze-Kocaeli, Turkey

    H. Özkan Gülsoy

Authors
  1. Gülsah Engin
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  2. Bülent Aydemir
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  3. H. Özkan Gülsoy
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Correspondence to H. Özkan Gülsoy.

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Engin, G., Aydemir, B. & Gülsoy, H.Ö. Injection molding of micro-porous titanium alloy with space holder technique. Rare Metals 30, 565–571 (2011). https://doi.org/10.1007/s12598-011-0430-2

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  • DOI: https://doi.org/10.1007/s12598-011-0430-2

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