Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Study on Manufacture of Tantalum Powder from Tantalum Scrap using Hydride-Dehydride Process (HDH Process)

수소화-탈수소화법을 이용한 탄탈륨 스크랩으로부터 탄탈륨 분말 제조 연구

  • Lee, Ji-eun (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Lee, Chan Gi (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Park, Ji Hwan (Material Technical innovation Group (MTIG)) ;
  • Yoon, Jin-Ho (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering)
  • 이지은 (고등기술연구원 융합소재연구센터) ;
  • 이찬기 (고등기술연구원 융합소재연구센터) ;
  • 박지환 ((주)MTIG) ;
  • 윤진호 (고등기술연구원 융합소재연구센터)
  • Received : 2018.06.29
  • Accepted : 2018.09.17
  • Published : 2018.10.31
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Abstract

For recylcing of high purity tantalum (Ta) scrap, We investigated manufacture of tantalum powder using hydride-dehydride (HDH) process. Tantalum had excellent properties such as ductile, hardness and high melting point. Usually these properties made difficult to make a powder. In this study, Tantalum powder was manufactured using Tantalum hydride via hydridation. Tantalum hydride was formed at $500^{\circ}C$, 5 hr/$700^{\circ}C$, 3 hr and it is easy to make a tantalum hydride powder because hydrogen in the tantalum act as a defect dislocation and lattice expansion. The powder was pulverized to a size of less than $10{\mu}m$ under a condition of 1300 rpm, 30 min using a ring mill, and tantalum powder with less than 50 ppm hydrogen was prepared through dehydridation in an Ar and low vacuum atmosphere.

국내 발생하는 고순도 탄탈륨 스크랩을 재활용하기 위해 수소화-탈수소화법(HDH법)에 의한 탄탈륨 분말 제조 연구를 실시하였다. 탄탈륨은 연성 및 강도가 우수하며 융점 또한 높아 분말 제조가 어려운 금속으로 알려져 있다. 따라서 본 연구에서는 수소화를 통해 생성된 탄탈륨 수소화물을 이용하여 탄탈륨 분말을 제조하였다. $500^{\circ}C$, 5시간/$700^{\circ}C$, 3시간 수소화 조건에서 탄탈륨 수소화물이 생성되었고, 탄탈륨 내의 수소는 격자의 팽창 및 전위의 결함으로 작용하므로 탄탈륨 수소화물 분말을 제조하기에 용이하였다. Ring mill을 이용하여 1300 rpm, 30분 이상의 조건에서 $10{\mu}m$ 이하의 크기로 분쇄하였으며, 알곤 및 저진공 분위기에서 탈수소화 공정을 통해 수소 50 ppm 이하의 탄탈륨 분말을 제조하였다.

Keywords

References

  1. Good-sun Choi and Jaw-Won Lim, 2008 : Production and Applications of Niobium and Tantalum, Trends in Metals & Materials Engineering, 21(5), pp.29-35.
  2. Il Park, Chuel Ro Lee, and Oh Yeon Lee, 2004 : Production of Fine Tantalum Powder by Electronically Mediated Reaction (EMR), Korean Journal of Materials Research, 14(10), pp.719-724. https://doi.org/10.3740/MRSK.2004.14.10.719
  3. Jae Sik Yoon et al., 2001 : Production of Tantalum Powder and Characteristics by Temperature, Korean Journal of Materials Research, 11(12), pp.1052-1056.
  4. Jung-Woo Ha, Ho-Sang Sohn, and Jae-Young Jung, 2012 : Tantalum Powder Preparation from $Ta_2O_5$ by Calciothermic Reduction, Journal of Metals and Materials, 50(11), pp.823-828.
  5. Sang Il Lee, Seung Young Lee, and Chang Whan Won, 2010 : The Properties and Manufacture of Porous Tantalum Powder for Capacitor, Journal of Metals and Materials, 48(4), pp.326-334. https://doi.org/10.3365/KJMM.2010.48.04.326
  6. Seung Young Lee, Sang Il Lee, and Chang Whan Won, 2009 : Preparation of Ta Powder for Capacitor by SHS Process, Journal of Metals and Materials, 47(6), pp.338-343.
  7. Back-Kyu Lee et al., 2012 : Recycling and refining of tantalum scraps by electron beam melting, Journal of the Korean Institute of Resources Recycling, 21(2), pp.59-65. https://doi.org/10.7844/kirr.2012.21.2.059
  8. Wonbaek Kim et al., 1999 : Sintering of $TiH_2Powders$, Korean Journal of Materials Research, 9(3), pp.282-287.
  9. Joseph Smokovich and Craig F. Hafner, 2011 : Method for the Production of Tantalum Powder Using Reclaimed Scrapas Source Material, US2011/0214534 A1
  10. Ji-Eun Lee et al., 2017 : Enhanced tantalum hydride formation by the catalytic effect of tungsten for hydrogen dissociation, Science of Advanced Materials, 9(12), pp.2173-2177. https://doi.org/10.1166/sam.2017.3217
  11. Kyoung-Tae Park et al., 2017 : Temperature-dependent Ta hydride formation for recycling of Ta scraps: Experimental and thermodynamic investigations, International Journal of Refractory Metals and Hard Materials, 65, pp.83-87. https://doi.org/10.1016/j.ijrmhm.2016.11.011
  12. B. R. Simonovic, S. V. Mentus, and R. Dimitrijevic, 2003 : Kinetic and structural aspects of tantalum hydride formation, Journal of the Serbian Chemical Society, 68(8-9), pp.657-663. https://doi.org/10.2298/JSC0309657S
  13. Oh Ik Hyun et al., 2007 : Method of manufacturing tantalum sintering for sputtering target, KR20090041148A.
  14. Jung-Chul Choi et al., 2009 : Technology of High Purity Powder Sintering by Ti Scrap Recycling, Korean Journal of Materials Research, 19(7), pp.397-402. https://doi.org/10.3740/MRSK.2009.19.7.397
  15. Jee-Seok Wang, Jong-Do Kim, and Hee-Jong Yoon, 2007 : A Study on the Optimum Shape of Basalt Liner for Inner Wall Protection of Ball Mill, Journal of the Korean Society of Marine Engineering, 31(6), pp.753-760. https://doi.org/10.5916/jkosme.2007.31.6.753
  16. Paolo Plescia and Emanuela Tempesta, 2017 : Analysis of friction coefficients in a vibrating cup mill (ring mill) during grinding, Tribology International, 114, pp.458-468. https://doi.org/10.1016/j.triboint.2017.04.033