Tribological Properties of Fiber and Particle Reinforced Hybrid Aluminum Composite

纤维和颗粒增强混合铝复合材料的摩擦学性能

基本信息

批准号：
07650170
负责人：
IWAI Yoshiro
金额：
$ 1.73万
依托单位：
Fukui University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650170/
关键词：
Metal Matrix Composite MMC Fiber Reinforced MMC Particle Reinforced MMC Hybird MMC Tribology Sliding Wear Rate Wear Mode 短繊維強化複合材料ハイブリッド強化複合材料

项目摘要

(1) Tribological properties of ADC 12 die casting aluminum with fibers of Al_2O_3, and some with and Al_2O_3 particles added were investigated in a pin-on-disk test. The Al_2O_3 fibers were 4 mu m in diameter : they were added in volume fractions from 2% to 26%.and their length ranged from 200 to 40 mu m. The particles of Al_2O_3 of ranged in sizes from 0.6 to 20 mu m. The MMC (disk test piece) were rubbed against nitrided SUS440B stainless steel (pin test piece) with a load of 10N and a sliding speed of 0.1m/s.Aluninum reinforced with fibers and particles of Al_2O_3 can improve dry sliding wear resistance. Reinforcements prevented wear crack propagation and plastic flow in the initial severe wear. Increasing volume fraction of fibers improves steady state mild wear resistance, apparently by the formation of a hard surface of uniformly dispersed crushed fibers, and by oxidation of the contact surfaces to prevent adhesion.Increasing size of particles improves the wear resistance. From t … More he wear rate and SEM observations, the wear mechanism modes of MMC are divided into three types, namely ; 1.Adhesive wear dominated by matrix material, and MMCf with low volume fraction, 2.Three body abrasive wear for MMCf with high volume fraction, and hybrid MMC with small particles, 3.Two body abrasive wear for hybrid MMC with large particle diameter.(2) SiC particle reinforced Al composites were rubbed by 0.45% carbon steel using pin-on-disk apparatus in air and vacuum environments. In air, SiC particles prevent or decrease severe wear but abrade the counterface in the initial stage. The steady state mild wear rate slightly improved by reinforcements but became larger with an increase of volume fraction of particle. In vacuum (5 x 10^<-4>Pa), the wear rate of MMC,which was about 100 times smaller than that in air, was considerably smaller than that of matrix material. Particularly, the MMC with particle of 20 mu m did not wear because the wear particles transfered between rubbing surfaces. Less

（1）ADC 12的摩擦学特性用Al_2O_3的纤维铸造铝，其中一些带有AL_2O_3颗粒的颗粒在烟囱的测试中研究了。 AL_2O_3纤维的直径为4 Mu m：它们的体积分数为2％至26％。其长度范围为200至40 mu m。 Al_2O_3的颗粒的尺寸为0.6至20 mu m。将MMC（磁盘测试件）摩擦在硝化的SUS440B不锈钢（销钉测试件）上，其负载为10N，滑动速度为0.1m/s.aluninum，用纤维和Al_2O_3的颗粒加固，可以改善干滑动耐磨性。增援部队可以防止在最初的严重磨损中磨损裂纹的繁殖和塑料流动。增加纤维的体积分数可以提高稳态轻度耐耐药性，这显然是通过形成均匀分散的压碎纤维的硬表面，并通过氧化接触表面以防止粘合剂的氧化。从……他佩戴速率和SEM观察的更多信息，MMC的磨损机构模式分为三种类型，即。 1.固定磨损以矩阵材料为主，而MMCF的体积较低，2。带有高体积分数的MMCF的三个身体磨料磨损，以及带有小颗粒的杂化MMC，3。3.两个杂交MMC的磨料磨损，带有较大的粒子直径。环境。在空气中，SIC颗粒可以防止或减少严重的磨损，但在初始阶段磨损了反面。稳态轻度磨损率通过增强量略有提高，但随着粒子体积分数的增加而变得更大。在真空（5 x 10^<-4> pa）中，MMC的磨损速率比空气小的100倍，小心小于基质材料的磨损速率。特别是，颗粒为20 mu m的MMC不磨损，因为磨损颗粒在摩擦表面之间转移。较少的