Effects of Environments on Wear Resistance of SiC-Whisker-Reinforced Aluminum Composite

环境对SiC晶须增强铝复合材料耐磨性的影响

基本信息

批准号：
04650130
负责人：
IWAI Yoshiro
金额：
$ 1.34万
依托单位：
Fukui University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650130/
关键词：
Metal Matrix Composite FRM Wear Resistance Environment Effect Moisture SiC-Whisker Reinforcement Severe Wear Mild Wear SiCウィスカ 2024Al合金 2024アルミ合金

项目摘要

The effects of environments on wear properities of SiC-Whisker-reinforced Aluminum alloy (matrix material : 2024Al ; volume fraction of the whisker : 22%, designated as FRM) were investigated by pin-on-disk tests (pin : 0.45% carbon steel, disk : FRM) in atmosphere and argon gas with various relative humidities.1. The severe wear occured regardless of relative humidity for unreinforced matrix material (2024Al), but didn't occur at every RH for FRM.2. The mild wear rate becomes larger remarkably with an increase of RH for 2024Al, but increase a little from RH=70% for FRM.For 2024Al, since the strength of worn surface decreases because of the adsorption of moisture, wear particle becomes larger and consequently wear rate increases. For FRM, wear particle increases in number but decreases in size because the matrix material is easy to fracture due to the action of moisture, so that mild wear rate slightly differs as RH increases.3. In argon gas, the mild wear rates of both 2024Al and FRM are smaller compared with those in atmosphere. These materials are much affected by moisture rather than oxygen.4. The coefficient of friction of FRM is larger than those of 2024Al in atmosphere and argon gas.From these results, it is found that the wear resistance of aluminum matrix composite is not influenced by moisture in environment.

通过销盘试验（销钉：0.45%碳钢）研究了环境对SiC晶须增强铝合金（基体材料：2024Al，晶须体积分数：22%，记为FRM）磨损性能的影响。，磁盘：FRM）在各种相对湿度的大气和氩气中。1．对于非增强基体材料 (2024Al)，无论相对湿度如何，都会发生严重磨损，但对于 FRM.2，并非在每个 RH 下都会发生严重磨损。对于2024Al，随着RH的增加，轻度磨损率显着增大，但对于FRM，从RH=70%开始略有增加。对于2024Al，由于磨损表面的强度因吸收水分而降低，磨损颗粒变大，因此磨损率增加。对于FRM，由于基体材料在湿气的作用下容易破裂，磨损颗粒数量增加但尺寸减小，因此随着RH的增加，轻度磨损率略有不同。 3．在氩气中，2024Al和FRM的轻度磨损率均小于大气中的轻度磨损率。这些材料受水分的影响较大，而受氧气的影响较小。4． FRM在大气和氩气中的摩擦系数比2024Al大。从这些结果可以看出，铝基复合材料的耐磨性不受环境湿度的影响。