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      Effects of lubrication on the powder metallurgy processing of titanium

      Lou, Jia; Gabbitas, Brian; Zhang, Deliang
      DOI
       10.4028/www.scientific.net/KEM.520.133
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      Lou, J., Gabbitas, B. & Zhang, D. (2012). Effects of lubrication on the powder metallurgy processing of titanium. In 1st International Conference on Powder Processing, Consolidation and Metallurgy of Titanium, Brisbane, December 4-7 2011, (pp. 133-138). Brisbane, QLD.
      Permanent Research Commons link: https://hdl.handle.net/10289/6856
      Abstract
      The role of lubrication on the consolidation behaviour of titanium powder, density increase and change in microstructure on subsequent sintering was investigated. HDH titanium powder mixed with 0-2wt% stearic acid or magnesium stearate was cold compacted. It was found that 0.3-0.6wt% of internal lubricant significantly improves the compressibility. However, more than 0.6wt% of lubricant aids the densification in the low-pressure region but limits the maximum density at high pressure. Moreover, 0.3-0.6wt% of lubricant offers a more uniform density distribution to the powder compact, while greater than 0.6wt% of lubricant leads to a segregation of lubricant in the surface region. The shape retention, ejection behaviour, de-lubrication behaviour and sintered properties were also studied in this work.
      Date
      2012
      Type
      Conference Contribution
      Publisher
      Trans Tech Publications
      Collections
      • Science and Engineering Papers [3119]
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