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Effects of Process Gas Pressure and Type on Oxygen Content in Sintered Titanium Produced using Jet-Milled Titanium Hydride Powders

  • Advances in Characterization of Powder Materials
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Abstract

Titanium hydride powders are increasingly being used to produce titanium components via powder metallurgy processes due to their improvements in densification over titanium metal powders. Since the oxygen content plays a significant role in the mechanical properties of titanium alloys, understanding how powder preparation techniques, such as milling, affect the final oxygen content is key. In this work, titanium hydride powders were milled through jet milling using air, nitrogen, and argon gas at various processing pressures. The oxygen content in the sintered powders is shown to be mostly dependent on the specific surface area, which is mainly affected by the grinding pressure. The type of gas used was also found to have an effect on the oxygen content, but the dependence was small.

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Acknowledgement

The authors acknowledge Funding support by the US Department of Energy (US DOE), Innovative Manufacturing Initiative (DEEE0005761), through the Advanced Manufacturing Office and the Office of Energy Efficiency and Renewable Energy.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, The University of Utah, 135 South 1460 East Room 412, Salt Lake City, UT, 84112, USA

    Matthew K. Dunstan, Brandyn Simpson, Pei Sun, Mark Koopman & Z. Zak Fang

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  1. Matthew K. Dunstan
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  2. Brandyn Simpson
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  3. Pei Sun
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  5. Z. Zak Fang
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Correspondence to Z. Zak Fang.

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Conflict of interest

Dr. Pei Sun, Dr. Mark Koopman, and Dr. Z. Zak Fang are listed as inventors on the HSPT process patent (US patent no. 9816157B2).

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Dunstan, M.K., Simpson, B., Sun, P. et al. Effects of Process Gas Pressure and Type on Oxygen Content in Sintered Titanium Produced using Jet-Milled Titanium Hydride Powders. JOM 72, 1286–1291 (2020). https://doi.org/10.1007/s11837-020-04010-0

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  • DOI: https://doi.org/10.1007/s11837-020-04010-0

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