Tribology Measurement by Thin Layer Activation Method Using Proton Beam

使用质子束的薄层活化方法进行摩擦学测量

• 批准号: 01880024
• 负责人: KOSAKO Toshiso
• 金额: $ 6.08万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B).
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01880024/
• 关键词: tribology measurement; proton beam; thin layer activation on method; トライポロジ-計測法; 薄層放射化法

A method of measuring iron wear using thin layer activation is discussed. The iron surface is activated by a ^<56>Fe(p, n)^<56>Co reaction etc., using a 7.00 MeV protom beam from a tandem Van de Graff accelerator. Irradiation of 0.5-1 muA bean currents produces 1-10 muCi of ^<56>Co activities in a layer about 50 mum thick. To get the basic Depth profile of cobalt activities, a 1.5 cm iron cube with a 3 mm diameter activation area is used to produce a wear calibration curve. Wear is produced by a polishing machine and wear thickness is measured by a precise electric micrometer. Monitoring radiation instruments are a 3 in. diameter X 3 in. NaI (Tl) scintillator and a high-purity Ge detector. A detailed iron wear calibration curve using ^<56>Co, ^<57>Co and ^<58>Co activities is obtained in accordance with iron wear thickness.Thin layer activation technique was applied to the on-line iron wear measurement of engine cam nose. The wearing amount of this activated part was measured using Ge semiconductor detector by on-line and nondestructive method. For the application of this method to the real car engine part (engine cam nose), the data acquisition system using microcomputers was built. The wear characteristics were successfully measured and an effectiveness of this method was verified.

讨论了一种用薄层活化法测量铁磨损的方法。利用串列范德格拉夫加速器的7.00 MeV质子束，铁表面被^&lt；56&gt；Fe(p，n)^&lt；56&gt；Co反应等激活。在大约50微米厚的一层中，用0.5-1 MUA豆流照射产生1-10 MUCI^&lt；56&gt；Co活性。为了获得钴活动的基本深度分布，使用了直径为3 mm的1.5 cm铁方块来产生磨损校准曲线。磨损由抛光机产生，磨损厚度由精密电子千分尺测量。监测辐射的仪器是3英寸的。直径X 3英寸NaI(Tl)闪烁体和高纯Ge探测器。根据铁的磨损厚度，分别用^&lt；56&gt；Co、^&lt；57&gt；Co和^&lt；58&gt；Co活度得到了详细的铁磨损校准曲线，并将薄层活化技术应用于发动机凸轮鼻铁磨损的在线检测。利用Ge半导体探测器对该活化件的磨损量进行了在线无损检测。为了将该方法应用于实际的汽车发动机零件(发动机凸轮鼻部)，建立了基于微型计算机的数据采集系统。成功地测量了材料的磨损特性，验证了该方法的有效性。

项目成果

Toshiso KOSAKO(小佐古 敏荘): "OhーLine and Precise Measurement of Iron Wear Using Thin Layer Activation Reactions by Proton Beam" The 2nd International Sympasium on Advanced Nuclear Energy Research(January 24ー26,1990,JAERI). 678-683 (1990)

Toshiso KOSAKO：“Oh-Line 和利用质子束薄层活化反应精确测量铁磨损”第二届国际先进核能研究研讨会（1990 年 1 月 24-26 日，JAERI）678-683（1990）。

Toshiso KOSAKO: "Wear Measurement at Depths of Several Tens Micrometers on the Surface of Iron Using a Thin Layer Activation Method by 7MeV Proton Beam" Naclear Instruments and Methods in Physics Rerearch B. B40. 578-590 (1989)

Toshiso KOSAKO：“使用 7MeV 质子束薄层活化方法对铁表面几十微米深度的磨损进行测量”Naclear 物理研究仪器和方法 B. B40。

小佐古 敏荘: "荷電粒子を用いた薄層放射化法による金属摩粍計測" ラジオアイソト-プ. 38(3). 17 (1989)

Toshisho Kosako：“使用带电粒子的薄层活化方法测量金属磨损”放射性同位素 38(3) 17 (1989)。

Toshiso KOSAKO(小佐古 敏荘): "The Thin Layer Activation Technique Applied to the OnーLine Iron Wear Measurement of an Engine Cam Nose" Nuclear Instruments and Methods in Physics Research. (1991)

Toshiso KOSAKO：“薄层活化技术应用于发动机凸轮鼻的在线铁磨损测量”核仪器和物理研究方法（1991）。

T. KOSAKO: "Wear Measurement at Depths of Several Tens Micrometers on the Surface of Iron Using a Thin Layer Activation Method by 7MeV Proton Beam" Nuclear Instruments and Methods in Physics Research. B40. 578-590 (1989)

T. KOSAKO：“使用 7MeV 质子束薄层激活方法对铁表面几十微米深度的磨损进行测量”物理研究中的核仪器和方法。