纳米硼酸钙的水热法制备及摩擦学性能研究  

Hydrothermal Synthesis and Tribological Properties Study of Nano-Calcium Borate

作　　者：纪献兵[1] 陈银霞[1] 

机构地区：[1]中国环境管理干部学院,河北秦皇岛066004

出　　处：《润滑与密封》2015年第7期75-77,120,共4页Lubrication Engineering

基　　金：中国科学院兰州化学物理研究所固体润滑国家重点实验室开放项目(1109);河北省科技厅项目(12273610);秦皇岛科技局项目(201401A023;201401A039);中国环境管理干部学院院级项目(2014007)

摘　　要：以硼砂、硝酸钙为原料,采用水热法制得纳米硼酸钙。通过场发射扫描电镜、X射线衍射和红外分析表征复合材料的结构,发现所生成的硼酸钙呈片状结构,厚度在100 nm以内。将油酸修饰硼酸钙复合材料分散于液体石蜡中,利用四球摩擦试验机在载荷392 N、转速1 450 r/min、时间30 min的条件下考察其摩擦学性能。结果表明,制备的纳米硼酸钙是一种绿色环保、性能优异的润滑油添加剂,0.5%质量分数的油酸修饰硼酸钙复合材料可使液体石蜡的摩擦因数从0.09降低到0.035;1.0%质量分数的油酸修饰硼酸钙复合材料可使液体石蜡润滑时的磨斑直径从0.68 mm降低到0.35 mm。Nano-calcium borates were hydrothermally synthesized using borax and calcium nitrate as row materials. The structure and morphologies of composites were investigated by FE-SEM, XRD and FT-IR. The result shows that the thick- ness of the synthesized calcium borates is less than 10t3 nm. The tribological properties of the oleic acid modified calcium borates as lubricant additives in liquid paraffin were evaluated on four-ball tester. The results reveals that the friction coef- ficient of the base oil with 0. 5% calcium borates is decreased from 0. 09 to 0. 035, and the wear scare diameter is de- creased from 0. 68 mm to 0. 35 mm under the test conditions of 392 N, 1 450 r/min and 30 min running.

关 键 词：摩擦性能 水热合成 硼酸钙 

分 类 号：TH117.1[机械工程—机械设计及理论]