Preparation of soft magnetic Fe-Al thin plate by Al diffusion penetration into Fe specimen.

Al扩散渗透Fe试样制备软磁Fe-Al薄板

• 批准号: 06453088
• 负责人: ONISHI Masami
• 金额: $ 0.38万
• 依托单位: KYUSHU INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06453088/
• 关键词: Thin iron plate; Aluminum; Diffusion penetration; Soft magnetic property; Maximum permeability; 鉄薄板

When evaporated ALCL_3 gas contacts with an iron specimen annealed at high temperature in the oxygen free atmosphere, aluminum does not penetrate into the specimen. If the sub-halide, AlCl, gas contacts with the specimen at higher temperatures than 1373 K,aluminum penetrates into the specimen.The evaporated AlCl_3 gas is led on the surface of molten aluminum heated at 1573K and then the gas reacts with aluminum according to the following equation ;AlCl_3 (gas) + 2Al (liquid) * 3AlCl (gas) .(1)The AlCl gas decomposes at the surface of the iron specimen annealed at 1548 K,owing to the opposite reaction of Eq.1., then atomic aluminum penetrates into the specimen.Interstitial free steel specimen with 0.7 mm in thickens and 30 mm in diameter, of which each disk side is separately treated for 14.4 ks at the condition mentioned above. Thus treated disc shows the average concentration of 13.4 mass % Al, 360 mu Hv for hardness and 8*10^<-7>OMEGA m for electric resistant ratio. For the measurement of soft magnetic property the treated specimen is machined from the disk to the ring with 25 and 15 mm in outer and inner diameters. The ring exhibits maximum permeability of 6500 H/m and coercive force of 30A/m. Water quenching from 973 kyields the increase of the maximum permeability from 6500 H/m to about 10^4H/m. Metals containing aluminum usually resist the attack of acids and oxygen at high temperature, so that the results of this experiment is also applicable to the surface treatment of metals

在无氧气氛中高温退火的铁试样与蒸发的ALCL_3气体接触时，铝不会渗入试样中。当试样温度高于1373 K时，低卤化物（AlCl）气体与试样接触，铝渗入试样，蒸发的AlCl_3气体被引到1573 K加热的熔融铝表面，与铝的反应方程为：AlCl_3（气体）+2Al（液体）× 3AlCl（气体）。（1）AlCl气体在1548 K退火的铁样品表面分解，这是由于方程1的相反反应，厚度为0.7mm、直径为30mm的无间隙原子钢试件，在上述条件下，每一圆盘侧面分别处理14.4ks。这样处理的盘显示出13.4质量%的Al的平均浓度、360 μ Hv的硬度和8 × 10 - 4 Ω m的电阻率。<-7>为了测量软磁性能，将处理后的样品从盘加工成外径为25 mm和内径为15 mm的环。环的最大磁导率为6500 H/m，矫顽力为30 A/m。从973 k开始的水淬导致最大渗透率从6500 H/m增加到约10^4H/m。含铝的金属通常在高温下能抵抗酸和氧的侵蚀，因此本实验的结果也适用于金属的表面处理

项目成果

E.Mihara: "Advance of Soft Magnetic Property due to Diffusion Penetration of Aluminum into Steel Thin Plate." Reikai-kaiho, Kyushu Branch of Surface Finishing Soc.Japan. Vol.34, No.3. 25-26 (1994)

E.Mihara：“由于铝扩散渗透到钢薄板中而提高了软磁性能。”

M.Onishi: "Surface treatment of iron and steel using metal halide." Reikai-kaiho, Kyushu Branch of Surface Finishing Soc.Japan. Vol.35, No.2. 1-6 (1995)

M.Onishi：“使用金属卤化物对钢铁进行表面处理。”

"鉄に対するアルミニウムの拡散浸透による軟磁性の向上" 表面技術協会九州支部119回例会会報. 34. 25-26 (1994)

《通过铝向铁的扩散和渗透来提高软磁性》表面技术协会九州分会第119次例会通报34. 25-26（1994年）。

大西正巳: "CVDによるアルミニウムのα鉄試料中への拡散浸透" 材料とプロセス. 7巻. 578-581 (1994)

Masami Onishi：“通过 CVD 将铝扩散渗透到 α-铁样品中”，材料与工艺，第 7 卷，578-581 (1994)。

三原 英一郎: "鉄に対するアルミニウムの拡散浸透による軟磁性の向上" 表面技術協会九州支部119回例会会報. 34. 25-26 (1994)

三原英一郎：《通过铝向铁的扩散和渗透来改善软磁性》表面技术协会九州分会第119次例会通报34. 25-26（1994年）。