Development of Chemical Vacuum Pump usingNitrogen Absorption Nano-Materials

吸氮纳米材料化学真空泵的研制

• 批准号: 17360369
• 负责人: ISHIHARA Keiichi
• 金额: $ 10.05万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360369/
• 关键词: Nitrogen gas absorption; Nanostructure; Mechanical milling; Non-equilibrium; Chemical vacuum pump; メカニカルアロイング; リチウム合金; 窒化; 酸化; 真空ポンプ

The purpose of this study is to develop a handy "Chemical Vacuum Pump" which evacuates from atmospheric pressure to vacuum. In the first year, the Li based alloys, which were produced by mechanical alloying with Si, Cu and Fe, were investigated. For the case of Li-Fe alloy, powders quickly absorb nitrogen gas. However, the amount of absorbed gas is limited, since Li is consumed by the reducing reaction with ion oxides covering the iron powder surface. In the second year, to improve the efficiency, the mechanical milling of Li with oxides which is more stable than lithium oxides were carried out. Thus, the powders milling with alumina and magnesia showed very active reactivity with nitrogen gas. Especially, Li-alumina alloy can absorb air (nitrogen and oxygen), which has not been reported before. In the last year, we also investigated nitrides. In the case of LiaN, it also reacts with oxygen gas showing two stage reactions, much higher than with nitrogen gas. The reason of this characteristic is attributable to the phase transition from alpha-Lis/1 to beta-LiaN and the formation of complex of Li-O-N.

本研究的目的是开发一种方便的“化学真空泵”，它可以从大气压中抽真空。第一年，研究了用硅、铜、铁机械合金化法制备的锂基合金。对于锂铁合金来说，粉末会迅速吸收氮气。然而，吸收气体的量是有限的，因为锂被覆盖在铁粉表面的离子氧化物的还原反应所消耗。第二年，为提高效率，采用比锂氧化物更稳定的氧化物对锂进行机械磨铣。因此，用氧化铝和氧化镁研磨的粉末在氮气中表现出非常活跃的反应性。特别是锂铝合金可以吸收空气（氮和氧），这在以前没有报道过。去年，我们还研究了氮化物。以LiaN为例，它也与氧气反应，表现为两阶段反应，比与氮气反应高得多。产生这种特性的原因是由于Li-O-N络合物的形成和li - Li-O-N的相变。

项目成果

Mechanical Milling of Lithium with Metal Oxide and its Reactivity with Gases

锂与金属氧化物的机械研磨及其与气体的反应性

• 发表时间: 2007
• 期刊: Materials Science Forum 534-536
• 作者: T. Yokoi;E. Yamasue;H. Okumura and K. N. Ishihara
• 通讯作者: H. Okumura and K. N. Ishihara

Cu-Li系合金のメカニカルアロイングとその窒素吸収特性

铜锂合金的机械合金化及其吸氮性能

• 发表时间: 2005
• 期刊: 粉体粉末冶金教会講演概要集平成17年度秋季大会
• 作者: 入江耕平;山末英嗣;奥村英之;石原慶一
• 通讯作者: 石原慶一

Mechanical alloying, nitrogen storage and magnetization of Ca-Co powder

Ca-Co粉的机械合金化、储氮与磁化

• 发表时间: 2007
• 期刊: Materials Science and Engineering A 449-451
• 作者: H. Okumura;F. N. Ishikawa Y;Morotomi;E. Yamasue;K. N. Ishihara
• 通讯作者: K. N. Ishihara

Supersaturated Solid Solution Formation of Fe-Li by Mechanical Alloying

机械合金化形成 Fe-Li 过饱和固溶体

• 发表时间: 2008
• 期刊: Reviews on Advanced Materials Science (accepted)
• 作者: K. N. Ishihara;F. Kubo;E. Yamasue and H. Okumura
• 通讯作者: E. Yamasue and H. Okumura

Ishihara, Chishiro Michioka, Kazuyoshi Yoshimura On the gas absorption ability of mechanically-milled Li-LiaN powder

Ishihara、Chishiro Michioka、Kazuyoshi Yoshimura 论机械研磨 Li-LiaN 粉末的气体吸收能力

• 发表时间: 2006
• 作者: Tomomichi;Yokoi;Eiji;Yamasue;Hideyuki;Okumura;Keiichi;N
• 通讯作者: N