Development of Atomized Ni-based Powder by Counterrotating Process

异向旋转雾化镍基粉末的研制

• 批准号: 61850126
• 负责人: TANNO Koichi
• 金额: $ 3.58万
• 依托单位: MIYAGI NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850126/
• 关键词: Atomize; Centrifugal force; Rapidly solidified metal powder; アトマイズ法; 超耐熱材料; アトマイズ; 超急冷粉; 遠心法; スーパーアロイ; アトマイズ粉; 金属粉

Recently, various methods of rapid solidification techniques have been published. However, these reported processes face various problems(contamination, low density, iregular shape, very high speed rotation).To solve these problems. we have developed a new atomization process which has a mechanism where a crucible enclosing the molten metal and a cooling disk rotate in opposite directions about a vertical coaxial. This process is one of the so-called centrifugal atomization methods. the pur-pose of this investigation is to define the powder property which is produced by this process. The size analysis of powders was conducted by sonic sieve and electro-magnetic sieve analysis. a scanning electron microscope and an optical microscope were utilized to ascertain particle shape and particle structure, respectively, and the roundness of particles was measured by a image analyzer. Spherical and smooth surfaced particles of Fe_<82>+B_<18>, super-alloy ,Pb-Sn and various materials with an average diameter of about 38 120 m, and the particles to get amorphas or metas-table phases(Fe_<82>-B_<18>) were produced by laboratory-scaled experimental ap-paratus.

最近，已经公布了各种快速凝固技术的方法。然而，这些报道的方法面临各种问题（污染、低密度、不规则形状、非常高速的旋转）。我们已经开发了一种新的雾化方法，其具有这样的机构，其中封闭熔融金属的坩埚和冷却盘围绕垂直同轴线沿相反方向旋转。这个过程是所谓的离心雾化方法之一。本研究的目的是确定由该方法生产的粉末性质。采用声波筛和电磁筛对粉体进行粒度分析。分别利用扫描电子显微镜和光学显微镜确定颗粒形状和颗粒结构，并通过图像分析仪测量颗粒的圆度。用实验室规模的实验装置制备了Fe_<82>+B_<18>、高温合金、Pb-Sn及各种材料的球形和表面光滑的颗粒，平均直径约为38 ~ 120 μ m，以及形成非晶相或准晶相（Fe_<82>-B_<18>）的颗粒。

项目成果

丹野浩一,八木正昭: 粉体粉末冶金協会62年度・春期大会.

Koichi Tanno、Masaaki Yagi：粉末冶金协会第 62 届春季会议。

丹野浩一 ほか: 日・中・米3国粉体工学シンポジウム. 53-59 (1988)

Koichi Tanno 等：日中美三方粉末工程研讨会 53-59 (1988)。

丹野浩一 ほか: 日・中・米3国粉体工学シンポジウム.

Koichi Tanno 等：日中美三方粉体工程研讨会。

Koichi,TANNO; Masaaki,YAGI: "Rapidly Solidified Powder Produced by Counterrotating Process" Sintering '87 TOKYO. 182-187 (1988)

田野浩一；

丹野浩一 ほか: Sintering ′87 TOKYO. 182-187 (1988)

Koichi Tanno 等人：Sintering 87 TOKYO 182-187 (1988)。