摘要
为比较磁控溅射制备的a-C:BCx和a-C:Cr这2种涂层的摩擦学性能,并研究2种涂层结构对摩擦学性能的影响,采用非平衡磁控溅射技术在38Cr Mo Al齿轮钢表面制备了a-C:BCx和a-C:Cr涂层,通过扫描电子显微镜与纳米压痕仪对2种涂层显微结构与力学性能进行了表征,并利用摩擦磨损试验机对涂层在干摩擦和油润滑(4109润滑油)条件下的摩擦学性能进行了评价。结果表明:a-C:BCx涂层的显微硬度和弹性模量均高于a-C:Cr涂层,a-C:BCx涂层在常温干摩擦、常温油润滑和高温油润滑下的摩擦学性能均优于a-C:Cr涂层,这主要归因于a-C:BCx涂层具有较高的显微硬度以及在对偶球上形成稳定的转移膜。
In order to compare the tribological properties of a-C:BCxand a-C:Cr coatings and study the influence of their microstructures on the tribological properties,the unbalanced magnetron sputtering technology was used to prepare a-C:BCxand a-C:Cr coatings on 38Cr Mo Al bearing steel.Subsequently,the microstructures and mechanical properties of the coatings were characterized by scanning electron microscope and nanoindentor,and the tribological properties under the conditions of dry sliding and lubricating oil were researched by tribometer.Results showed that the microhardness and elastic modulus of a-C:BCxcoatings were higher than those of a-C:Cr coatings.Under dry friction at room temperature,oil lubrication at room temperature and oil lubrication at high temperature,the tribological behaviors of a-C:BCxcoating were better than those of a-C:Cr coating which mainly be caused by the high hardness of a-C:BCxcoating and the formation of stable transfer coating on the mating ball.
作者
李霞
尚伦霖
曹学乾
张广安
LI Xia;SHANG Lun-lin;CAO Xue-qian;ZHANG Guang-an(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China)
出处
《材料保护》
CAS
CSCD
北大核心
2020年第7期1-5,54,共6页
Materials Protection
基金
国家自然科学基金(51775535)资助。
