四种陶瓷材料与SUS304不锈钢的高温摩擦学特性研究

An Investigation of the Tribological Properties of Ceramics Rubbhg against Stainless Steel at High Temperature

为了探索陶瓷与金属组合作为高温润滑材料的可能性，利用端面摩擦磨损试验机测定了４种陶瓷ＳｉＣ、Ｓｉ３Ｎ４、Ａｌ２Ｏ３和ＺｒＯ２与ＳＵＳ３０４不锈钢在室温至５００℃下的摩擦学性能．摩擦试验结果表明，ＳｉＣ、Ｓｉ３Ｎ４和Ａｌ２Ｏ３在低于２００℃时的摩擦系数稳定且都低于０．２，但在２００℃以上时的摩擦性能却都不稳定，摩擦系数在０．２－０．４之间；ＺｒＯ２在２００℃以下时的摩擦性能不稳定，而在２００℃以上时的摩擦系数低于６．２且较稳定。磨损试验结果表明，在４种陶瓷中ＺｒＯ２的磨损率最低［－２．６０×１０－９ｍｍ３／（Ｎ·ｍ）］，ＳｉＣ和Ｓｉ３Ｎ４的磨损率居中［分别为１．８０×１０－６ｍｍ３／（Ｎ·ｍ）和４．４０×１０－６ｍｍ３／（Ｎ·ｍ）］，Ａｌ２Ｏ３的磨损率最高［３．６４×１０－５ｍｍ３／（Ｎ·ｍ）］；分别与这４种陶瓷对磨的不锈钢的磨损率都高［１．４０×１０－５－４．５２×１０－５ｍｍ３／（Ｎ·ｍ）］．

The friction and wear properties of SiC ,Si3N4,Al2O3 and ZrO2 rubbing againststainless steel(SUS-304)were evaluated using a pin-on-disc friction tester at the temDerature fromroom temperature to 500℃.The results indicated that the friction coefficients were lower than0.2when stainless steel rubbing against SiC,Si3N4 or Al2O3 respectively,at the temperature below200℃,while an unsteady friction coefficient from 0.2 to 0.4 was measured at the temperatureabove 200℃,As to ZrO2 rubbing against stainless steel,an unsteady friction coefficient was foundat the temperature lower than 200℃,but a friction coefficient lower than 0. 2 was measured at thetemperature above 200℃. The wear tests showed that the specific wear rate is-2.6×10-9mm3/(N·m)for ZrO2,1.8×10-6mm3/(N·m)and 4.4×10-6mm3/(N·m)for SiC and Si3N4,respectively,and 3.64×10-5mm3/(N·m)for Al2O3,whereas the wear rate of stainless steelrubbing against all the four ceramics was 1.4 × 10-5-4.5×10-5mm3/(N·m).