Technology of High Purity Powder Sintering by Ti Scrap Recycling
티타늄 스크랩 재활용에 의한 고순도 분말 소결 기술

Jung-Chul Choi, Se-Hun Chang, Young-Hoon Cha, Ik-Hyun Oh
2009 Korean Journal of Materials Research  
In this study, Ti powder was fabricated from Ti scrap by the Hydrogenation-Dehydrogenation (HDH) method. Hydrogenation reactions of Ti scrap occurred at near 450 o C with a sudden increase in the reaction temperature and the decreasing pressure of hydrogen gas during the hydrogenation process in the furnace. The dehydrogenation process was also carried out at 750 o C for 2hrs in a vacuum of 10 -4 o C. After sintering, all of the Ti compacts showed brittle fracture behavior, which occurred in an
more » ... hich occurred in an elastic range with short plastic yielding up to a peak stress.
doi:10.3740/mrsk.2009.19.7.397 fatcat:nnvk3hinl5bjbo5q2o5mufplaa