Getter property of nano-sized metallic powders was evaluated as a possible candidate for the future getter material. For the purpose, Ti powders of about 50 nm were prepared by electrical wire explosion. Commercial Ti powders of about 22 micrometer were tested as well for comparison. The room-temperature hydrogen-sorption speed of nano-sized Ti powders was which was more than 4 times higher than that of micron-sized ones. The value is comparable to or even higher than those of commercial products. Its sorption speed increases with activation temperature up to above which it deteriorates due to low-temperature sintering effect of nano-sized particles.

• 김원백 | Kim Won-Baek
• 박제신 | Park Je-Shin
• 서창열 | Suh Chang-Youl
• 장한권 | Chang Han-Kwon
• 이재천 | Lee Jae-Chun
• 박미영 | Park Mi-Young