基本信息:
- 专利标题： Method and apparatus for producing metallic ultrafine particles
- 专利标题（中）：金属超微粒子的制造方法和装置
- 申请号：US11401411 申请日：2006-04-11
- 公开(公告)号：US20070062333A1 公开(公告)日：2007-03-22
- 发明人： Junichi Saito , Kuniaki Ara , Hiroaki Ohira , Kuniaki Miura , Toshihiko Ogasawara
- 申请人： Junichi Saito , Kuniaki Ara , Hiroaki Ohira , Kuniaki Miura , Toshihiko Ogasawara
- 优先权： JP2005-272065 20050920
- 主分类号： B22F9/12
- IPC分类号： B22F9/12
摘要：
An object of the present invention is to efficiently produce ultrafine particles having such a small diameter as 50 nm or less, a narrow range of size distribution, and a non-oxidation surface. According to the present invention, the metallic ultrafine particles are produced by dropping a raw metallic powder onto a controllably heated evaporating surface in a decompressed inert gas; instantly evaporating the raw metallic powder to form the ultrafine particle; and condensing and depositing the ultrafine particle on a trapping surface arranged above the evaporating surface. The raw metallic powder is any one of a single metal, an alloy and an intermetallic compound, preferably has an average particle diameter controlled to 500 μm or smaller so that the powder can be instantly evaporated, and is preferably supplied by a minute amount.
摘要（中）：
本发明的目的是有效地制造具有50nm以下的小直径，窄范围的尺寸分布和非氧化面的超微粒子。 根据本发明，通过在减压惰性气体中将原料金属粉末滴加到可控加热的蒸发表面上来制造金属超微粒子; 立即蒸发原料金属粉末，形成超细颗粒; 并将超细颗粒冷凝并沉积在布置在蒸发表面上方的捕集表面上。 原料金属粉末是单一金属，合金和金属间化合物中的任一种，优选将平均粒径控制在500μm以下，使得粉末能够瞬间蒸发，优选以微量的量供给。