绢丝丽蚌的摩擦学行为研究

Tribological Behavior of Lamprotula fibrosa

为了获得有用的复合材料的摩擦学信息,研究了绢丝丽蚌的微观结构和摩擦磨损性能。研究表明:绢丝丽蚌的摩擦率和摩擦配副的粗糙度关系最大,随着摩擦配副的粗糙度减小磨损率逐渐减小;法向载荷对摩擦因数的影响最大,时间对摩擦因数的影响最不显著。绢丝丽蚌珍珠层的摩擦因数明显高于棱柱层,随着摩擦时间的增加摩擦机理产生变化,由犁切磨损为主变为以粘着磨损为主,摩擦因数由于珍珠层磨损殆尽急剧变化。绢丝丽蚌珍珠层的磨损量随着载荷的增加线性增加。绢丝丽蚌的主要磨损机制为犁切,并出现材料转移和轻微的疲劳现象。贝壳的结构主要由角质层、棱柱层、珍珠层组成,其与砂纸摩擦过程中摩擦因数基本稳定在0.3左右,其中珍珠层最耐磨,角质层与棱柱层摩擦磨损性能相对较差。

In order to obtain useful information on tribology of composite materials, this paper studies the microstructure and friction and wear properties of lamprotula fibrosa. Studies have shown that lamprotula fibrosat friction rate and friction relationship with the roughness of the biggest vice, as vice roughness re- duces the friction with wear rate gradually decreases; method to load the greatest impact on the friction fac- tor, the time of the friction factor the impact of the least significant. Friction factor of the lamprotula fibrosa nacrer is significantly higher than theprismatic layer, friction time increases with the friction mechanism has changed and dominated by the plow cut into the adhesive wear mainly because friction factor changes dramatically depleted nacre wear . Nacre wear of lamprotula fibrosa increases hneariy with ineresing load. The main wear mechanism of lamprotula fibrosa is plow cutting, and the emergence of material transfer and slight fatigue. The main structure of Shell include stratum corneum, prismatic layer, pearl sandpaper rubbing friction factor stable at around 0.3, which most wear pearl layer, the the prismatic layer friction and wear performance is relatively poor.