STUDIES ON FRICTION AND WEAR OF ALUMINUM ALLOY BASED COMPOSITES IN CORROSIVE ENVIRONMENTS

腐蚀环境下铝合金基复合材料摩擦磨损研究

• 批准号: 05650152
• 负责人: GOTO Hozumi
• 金额: $ 1.41万
• 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: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650152/
• 关键词: Aluminum alloy based composites; Friction and wear; Tribology; Corrosive environments; Lubricating oil; alumina short fiber; hollow silica particle; 摩擦・磨耗; アルミニウム合金複合材料

Friction and wear tests under unidirectional and reciprocating sliding conditions were conducted in wet air, ion-exchanged water, saline solution, and machine oil to investigate the friction and wear characteristics of aluminum alloy (JIS AC8A) based alumina-short-fiber and hollow-silica-particle reinforced composites in corrosive environments.From the test results of unidirectional sliding wear of the composites in contact with a stainless steel, the rate of severe wear for the silica-particle reinforced composite in wet air is higher than the rate of other materials because the silica particles are fractured at high loads. The rate of mild wear is low at low loads because the particles bear a part of the load resulting in the improvement in the wear resistance. The transition load between severe and mild wear is about ten times higher in ion-exchanged water and saline solution than in wet air. The rate of mild wear is almost the same as that of AC8A,indicating no deleterious action o … More f the reinforcing material to be found.The wear resistance of the alumina-short-fiber reinforced composite in wet air is improved in the mild wear regime as compared with that of AC8A,however, is worse at high loads than other materials in all environments because the fragments of the reinforcing material exhibit abrasive action. The wear resistance is more decreased than AC8A in the aqueous solutions, indicating that the deleterious action of the reinforcing material is evident.The friction and wear test results of the composites against a bearing steel ball under reciprocating sliding in wet air reveal that the wear resistance of the composites are excellent at low loads. However, there is no great difference in wear resistance between the composites and AC8A with much wear of the steel ball at high loads.The wear resistance of the alumina-short-fiber reinforced composite is very good in machine oil as compared with other materials. A slight increase in the composite wear and the steel ball damage is seen even at high loads. The silica-particle reinforced composite manifests the wear resistance equivalent to that of the alumina-short-fiber composite at low loads. However, the wear rapidly increases at high loads due to the fracture of the silica particles, whose fragments accelerate the damage of the steel ball.The coefficients of friction mu of three materials are about 0.05 within a lower load range in machine oil and increase with load up to a constant value near 0.1 above 50N.On the other hand, the mu is about 0.5-0.9 in wet air and higher in the ascending order of AC8A,alumina-short-fiber, and silica-particle reinforced composites. The reason is that the plowing action due to the fragments of the reinforcing material embedded on contact surfaces exerts frictional resistance. Less

在湿空气、离子交换水、生理盐水和机油中进行单向和往复滑动条件下的摩擦磨损试验，研究了基于JIS AC8A的铝短纤维和空心硅颗粒增强铝合金复合材料在腐蚀环境中的摩擦磨损特性。从与不锈钢接触的复合材料单向滑动磨损试验结果来看，硅颗粒增强复合材料在湿空气中的严重磨损率高于其他材料，因为硅颗粒在高载荷下断裂。在低负荷下轻度磨损率低，因为颗粒承担了一部分负荷，从而提高了耐磨性。在离子交换水和盐水溶液中，重度和轻度磨损之间的过渡负荷比在湿空气中高10倍左右。轻度磨损率与AC8A几乎相同，表明没有发现更多的增强材料的有害作用。与AC8A相比，铝-短纤维增强复合材料在湿空气中的耐磨性在轻度磨损状态下有所提高，但在所有环境下的高负荷下都不如其他材料，因为增强材料的碎片表现出磨蚀作用。在水溶液中的耐磨性比AC8A降低得多，说明增强材料的有害作用明显。湿空气往复滑动下复合材料与轴承钢球的摩擦磨损试验结果表明，复合材料在低载荷下具有优异的耐磨性。然而，复合材料的耐磨性与AC8A没有太大差异，钢球在高载荷下磨损较大。与其他材料相比，铝-短纤维增强复合材料在机油中的耐磨性很好。即使在高载荷下，复合材料磨损和钢球损伤也略有增加。在低载荷下，硅颗粒增强复合材料的耐磨性与铝短纤维复合材料相当。然而，在高载荷下，由于二氧化硅颗粒的断裂，磨损迅速增加，二氧化硅颗粒的碎片加速了钢球的损伤。三种材料在机油中较低载荷范围内的摩擦系数均为0.05左右，在50N以上随载荷的增大而增大，直至0.1附近的恒定值。另一方面，在潮湿空气中，AC8A、氧化铝-短纤维和硅颗粒增强复合材料的mu值在0.5 ~ 0.9之间，且从高到低依次高于AC8A、氧化铝-短纤维和硅颗粒增强复合材料。其原因是由于嵌入在接触面上的增强材料碎片所产生的犁耕作用产生了摩擦阻力。少

项目成果

後藤穗積,大森舜二: "アルミナ短繊維およびシリカ粒強化A1合金複合材料の摩擦・摩耗" 日本トライボロジー学会トライボロジー会議'93秋 名古屋 予稿集. 337-340 (1993)

Hozumi Goto，Shunji Omori：“氧化铝短纤维和二氧化硅颗粒增强 A1 合金复合材料的摩擦和磨损”日本摩擦学会摩擦学会议 93 秋季名古屋会议记录 337-340（1993）。

後藤穂積,大森舜二: "実用材料の空気中フレッチング摩耗における臨界相対すべり量について" 材料. 42. 861-867 (1993)

Hozumi Goto，Shunji Omori：“关于实用材料空气微动磨损的临界相对滑移量”材料 42. 861-867 (1993)。

Goto, H., and Omori, S.: "Friction and wear of alumina-short-fiber and hollow-silica-particle reinforced aluminum alloy composites" Proc.of JAST Tribology Conf., Nagoya. 337-340 (1993)

Goto, H. 和 Omori, S.：“氧化铝短纤维和空心二氧化硅颗粒增强铝合金复合材料的摩擦和磨损”Proc.of JAST Tribology Conf.，名古屋。

後藤穂積,大森舜二,澤山淳一: "アルミナ短繊維およびシリカ粒強化Al合金複合材料の腐食性環境中磨耗試験" 福岡工業大学エレクトロニクス研究所所報. 11. 101-108 (1994)

Hozumi Goto、Shunji Omori、Junichi Sawayama：“短氧化铝纤维和二氧化硅颗粒增强铝合金复合材料在腐蚀环境中的磨损试验”福冈工业大学电子研究所公告11. 101-108（1994）。

Goto, H., Omori, S.and Sawayama J.: "Wear tests of alumina-short-fiber and hollow -silica-particle reinforced aluminum alloy composites in corrosive environments" Rept.of The Electronics Laboratory, Fukuoka Institute of Technology. Vol.11. 101-108 (1994)

Goto, H.、Omori, S. 和 Sawayama J.：“腐蚀环境中氧化铝短纤维和空心二氧化硅颗粒增强铝合金复合材料的磨损测试”福冈工业大学电子实验室报告。