Electrochemical Study on Friction and Wear of Some Commercial Materials in Liquid Environments

一些商业材料在液体环境中摩擦磨损的电化学研究

• 批准号: 62550060
• 负责人: GOTO Hozumi
• 金额: $ 1.22万
• 依托单位: FUKUOKA INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550060/
• 关键词: Commercial materials; Wear; Fretting; Corrosive environments; Transition of wear mode; 溶存酸素; 摩擦; 溶存酵素; 液体環境

Friction and wear characteristics of materials under unidirectional-sliding and fretting conditions was investigated in air, in pure water, and in saline to elucidate the friction and wear mechanism in corrosive environments. In air, the analysis of three-dimensional topographies on severe and mild worn-surfaces made possible to study the condition for the transition from severe to mild wear. In liquid environments the effects of contact load, pre-corrosion time, weight-concentration of solution, dissolved-oxygen content(DO), and cathodic protection on the transition of wear mode was investigated. The effect of dissolved oxygen on the friction and wear during fretting was also studied.1. The increase in the area of flat surfaces due to the wear of asperities resulted in the rapid decrease in the mean contact pressure of real contact area. This process caused the transition from severe to mild wear.2. The contact load for the transition from severe to mild wear in liquid environments wa … More s very higher than the contact load in dry air.3. In pure water, severe wear occurred when pre-corrosion time was shorter, the transition from severe to mild wear observed at a certain pre-corrosion time, and mild wear appeared at longer time than the time.4. In 0.5 wt% saline, mild wear occurred in the range of DO 0.05-18mg/l, and the wear rate was reduced with the decrease in DO. In 0.01 wt% saline the wear mode changed from mild to severe wear at DO lower than 2mg/l.5. In saline mild wear predominated irrespective of DO due to the incomplete corrosion protection between applied potentials E=-0.50--0.80 V(vs. Ag/AgCl). At E -0.90 V severe wear appeared with the seizure of contact surfaces.6. During the fretting of pure iron in pure water and in saline, friction was higher at less DO content and decreased with the increase in the DO content. On the other hand, fretting wear presented the reverse tendency as the friction.7. During the fretting of pure copper in saline, the relationship between DO and friction was the same as observed in the fretting of iron. The variation of wear with DO content was very complicated for the temperature of saline. Less

研究了材料在空气、纯水和盐水中在单向滑动和微动条件下的摩擦磨损特性，以阐明腐蚀环境中的摩擦磨损机理。在空气中，对严重和轻度磨损表面的三维形貌进行分析使得研究从严重磨损到轻度磨损的转变条件成为可能。在液体环境中，研究了接触载荷、预腐蚀时间、溶液重量浓度、溶解氧含量（DO）和阴极保护对磨损模式转变的影响。还研究了溶解氧对微动摩擦磨损的影响。 1．由于粗糙表面的磨损导致平面面积增加，导致实际接触面积的平均接触压力迅速下降。这个过程造成磨损从严重到轻度的转变。2．液体环境中从严重磨损过渡到轻度磨损的接触载荷远高于干燥空气中的接触载荷。3．在纯水中，预腐蚀时间较短时出现严重磨损，预腐蚀时间一定时出现严重磨损向轻度磨损转变，预腐蚀时间长于预腐蚀时间时出现轻度磨损。 4．在0.5 wt%盐水中，DO在0.05-18mg/l范围内发生轻度磨损，且磨损率随着DO的降低而降低。在 0.01 wt% 盐水中，当 DO 低于 2mg/l.5 时，磨损模式从轻度磨损变为重度磨损。在盐水中，由于施加电势 E=-0.50--0.80 V（相对于 Ag/AgCl）之间的腐蚀保护不完全，因此无论 DO 大小如何，轻微磨损均占主导地位。在 E -0.90 V 时，出现严重磨损并伴有接触表面卡住。6．纯铁在纯水和盐水中的微动过程中，当 DO 含量较低时，摩擦力较高，随着 DO 含量的增加，摩擦力减小。另一方面，微动磨损则呈现与摩擦力相反的趋势。7．当纯铜在盐水中微动时，溶解氧与摩擦力之间的关系与铁微动中观察到的相同。对于盐水温度来说，磨损随DO含量的变化非常复杂。较少的

项目成果

芦田実,後藤穂積: 材料.

Minoru Ashida、Hozumi Goto：材料。

後藤穂積: 福岡工業大学エレクトロニクス研究所所報.

Hozumi Goto：福冈工业大学电子研究所报告。

Hozumi,Goto; Minoru,Ashida: "Study on the Corrosive Wear of Some Metallic Materials( Wear Behavior of 0.15% Carbon Steel in Air, in Pure Water, and in Saline )" Reports of the Electronics Research Laboratory, Fukuoka Institute of Technology. 5. 29-37 (198

Hozumi、Goto；%20Minoru、Ashida：%20"研究%20on%20the%20腐蚀%20磨损%20of%20一些%20金属%20材料(%20磨损%20行为%20of%200.15%%20碳%20钢%20in%20空气、%20in

後藤穂積,芦田実: 福岡工業大学エレクトロニクス研究所所報. 5. 29-37 (1988)

Hozumi Goto，Minoru Ashida：福冈工业大学电子研究所报告 5. 29-37 (1988)。

後藤穂積、芦田実: 潤滑.

后藤穗美、芦田稔：润滑。