Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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Effect of dehydride atmosphere on Hydrogen concentration of Tantalum

탈수소화 분위기가 탄탈륨 분말 수소농도에 미치는 영향 연구

  • Lee, Ji-eun (Material Science and Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Yoon, Jin-Ho (Material Science and Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Lee, Chan Gi (Material Science and Chemical Engineering Center, Institute for Advanced Engineering)
  • Received : 2021.09.16
  • Accepted : 2021.10.12
  • Published : 2021.10.31
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Abstract

Hydride-dehydride process for efficient recycling of tantalum (Ta) is used for manufacturer of Ta powder. In case of metal powder, Impurities as like nitride, oxygen, hydrogen is decreased of physical properties. For manufacture of Ta powder, control of theses impurities is important. In this study, to decreased of impurities on Ta powder using HDH process optimize dehydride condition. Dehydration behavior of Ta is depended on temperature, time, and atmosphere. Phase transition of Ta hydride is analyzed by X-ray diffraction (XRD). Concentration of hydrogen is decreased with temperature increased. At high temperature, concentration of hydrogen in Ta is similar according to time increased. Size and morphology of powder is not observed after dehydride. Ta powder, which is less than 20 um, concentration of hydrogen under 800 ppm is obtain.

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Acknowledgement

이 논문은 2021년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임(20195210100070, 건습식 통합공정을 이용한 저품위 탄탈륨폐자원의 업사이클링 기술개발)

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