齿轮钢和蓝宝石的低速摩擦特性对比研究

Gear steel and sapphire low-speed friction comparison of characteristics

通过单颗磨粒划擦试验,研究齿轮钢(42Cr Mo V)和蓝宝石(α-Al2O3)的摩擦磨损特性。采集划擦试验过程中的力信号,比较在不同的划痕深度、划痕速度和压头角度条件下,齿轮钢和蓝宝石分别与金刚石压头所形成的摩擦副的摩擦因数μ。结果表明:划痕深度、划痕速度对两种材料与金刚石压头所形成的摩擦副的摩擦因数μ均无影响;压头角度对两种材料与金刚石压头所形成的摩擦副的摩擦因数μ均有影响,且随着压头角度的增大,两种材料与金刚石压头所形成的摩擦副的摩擦因数μ均增大;在相同试验条件下,蓝宝石与金刚石压头所形成的摩擦副的摩擦因数大于齿轮钢与金刚石压头所形成的摩擦副的摩擦因数。

Use single grain scratch test to study gear steel （42CrMoV） and sapphire （α-Al2O3 ） friction and wear characteristics. Compare coefficient of friction/x of the two materials with diamond indenter under different scratch depth, scratch speeds, indenter angles by collecting the force signals during the scratch test. The result shows that the depth of the scratch and the velocity of scratch have no effect on friction coefficient of the two materials ;indenter angle has effect on friction coefficient of both materials and friction coefficient/x increases with indenter angle increasing;friction coefficient of sapphire with diamond is large than friction coefficient of gear steel with diamond.