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ISO TC 298에서의 희토류 분야 표준화 현황과 우리나라의 전략 및 과제
엄누시아,사다르 아바스,무하마드 아닉,무하마드 자라르,이미혜,김범성,김택수,이빈,Eom, Nu Si A,Abbas, Sardar Farhat,Aneeq, Haq Muhammad,Zarar, Rasheed Mohammad,Lee, Mi Hye,Kim, Bum Sung,Kim, Taek-Soo,Lee, Bin 한국분말재료학회 (*구 분말야금학회) 2019 한국분말재료학회지 (KPMI) Vol.26 No.3
Since the ISO decided to deal with rare-earth elements at the $298^{th}$ Technical Committee (TC) in 2015, Korea has participated in four plenary meetings and proposed four standards as of June 2019. The status of ISO TC 298, the standards covered by the TC, and the standardization strategies of Korea are summarized. Korean delegations are actively engaged in WG2, which deals with recycling, proposing four standards for fostering the rare-earth recycling industry. However, the participation of domestic experts is still low compared with the increase in the number of working groups and the number of standards in TC 298. The aim of this article is to summarize the current status of ISO international standards related to rare-earth elements, to encourage relevant experts to participate in standardization, and to develop international standards that accurately reflect the realities of the industry.
안정적 자원 확보를 위한 러시아 광물 시장 흐름 및 경제방향
엄누시아,노수,학 무하마드 아닉,이빈,임경묵,김범성,Eom, Nu Si A,Noh, Su,Haq, Muhammad Aneeq,Lee, Bin,Lim, Kyoung Mook,Kim, Bum Sung 한국분말야금학회 2019 한국분말재료학회지 (KPMI) Vol.26 No.4
With increasing demand for resources worldwide, Korea has been negotiating with resource-holding countries to achieve conservation of energy resources. Among them, Russia is the third largest resource-producing and exporting nation in the world and has several resource materials such as nickel, platinum group metals, gold, and other reserves. As a result, there is growing interest in cooperation between Korea and Russia. The aim of this article is to summarize the current status of market flow of Russian energy resources as well as Russia's economic cooperation with Korea. Notably, South Korea needs to focus on investing in overseas mines for a stable supply of rare metals. Nevertheless, securing rare metals is a major task by understanding the flow and policy direction of Russian material mines.
전기방사 공정을 이용하여 1차원 Nd<sub>2</sub>Fe<sub>14</sub>B섬유로부터의 Nd<sub>2</sub>Fe<sub>14</sub>B 자석분말 합성
엄누시아,노수,학 무하마드 아닉,김범성,Eom, Nu Si A,Noh, Su,Haq, Muhammad Aneeq,Kim, Bum Sung 한국분말야금학회 2019 한국분말재료학회지 (KPMI) Vol.26 No.6
Magnetic 0-D Nd<sub>2</sub>Fe<sub>14</sub>B powders are successfully fabricated using 1-D Nd<sub>2</sub>Fe<sub>14</sub>B nanowire formed by an efficient and facile electrospinning process approach. The synthesized Nd-Fe-B fibers and powders are investigated for their microstructural, crystallographic, and magnetic properties according to a series of subsequent heat treatments. Each heat-treatment process leads to the removal of organic impurities and the formation of the respective oxides/composites of Nd, Fe, and B, resulting in the formation of Nd<sub>2</sub>Fe<sub>14</sub>B powders. Nd-Fe-B fibers exhibit the following magnetic properties: The coercivity (H<sub>ci</sub>) of 3260 Oe, a maximum magnetization at 3T of 109.44 emu/g, and a magnetization remanence (M<sub>r</sub>) of 44.11 emu/g. This process easily mass produces hard magnetic Nd<sub>2</sub>Fe<sub>14</sub>B powders using a 1-D synthesis process and can be extended to the experimental design of other magnetic materials.