摘要
采用铝板水热碳吸附工艺(HTCAP)和真空热压烧结工艺(VHPS)制备无定形碳(APC)/Al层状复合材料,研究葡萄糖溶液浓度对其显微组织、力学性能和摩擦学性能的影响。结果表明,APC在层间分布均匀,并且通过Al的扩散与基体形成良好的界面结合。随着葡萄糖溶液浓度的增加,层间硬度、极限抗拉强度(UTS)和伸长率先增大后减小,而磨损率则呈现相反的趋势,摩擦因数(COF)逐渐减小。当葡萄糖溶液浓度为0.3 mol/L时,伸长率最大,为16.4%,磨损率最小,为0.344×10^(-5)mm^(3)/(N·m)。粘着磨损是APC/Al层状复合材料的主要磨损机制。耐磨性的提高是由于在磨损表面形成均匀的APC润滑膜。
Amorphous carbon(APC)/Al laminated composites were prepared by hydrothermal carbon adsorption on plates(HTCAP)and vacuum hot-press sintering process.The effect of the glucose solution concentration on the microstructure,mechanical properties and tribological properties was investigated.The results indicate that APC is uniformly distributed between layers and has good interfacial bonding with the matrix through the diffusion of Al.As the glucose solution concentration increases,the interlayer hardness,ultimate tensile strength and elongation first increase and then decrease,while the wear rate shows the opposite trend and the coefficient of friction(COF)gradually decreases.A maximum elongation of 16.4%and a minimum wear rate of 0.344×10^(−5) mm^(3)/(N·m)are achieved at a glucose solution concentration of 0.3 mol/L.Adhesive wear is the dominant wear mechanism of APC/Al laminated composites.The improvement in wear resistance is attributed to the formation of uniform APC lubrication film on the wear surface.
作者
陈奕涵
许红雨
姜博
王晔
胡茂良
吉泽升
Yi-han CHEN;Hong-yu XU;Bo JIANG;Ye WANG;Mao-liang HU;Ze-sheng JI(School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150080,China;Key Laboratory of Advanced Manufacturing and Intelligent Technology,Ministry of Education,Harbin University of Science and Technology,Harbin 150080,China)
基金
financially supported by the National Natural Science Foundation of China (No. 51704087)
the Natural Science Foundation of Heilongjiang Province, China (No. LH2020E083)。
关键词
铝基层状复合材料
无定形碳
水热反应
界面显微组织
摩擦学性能
Al matrix laminated composites
amorphous carbon
hydrothermal reaction
interfacial microstructure
tribological property
