摘要
复合陶瓷涂层具有良好的抗腐蚀和耐磨性能,因其性能优异、成本较低而在汽车、轮船、电子、建筑等方面得到广泛应用。为得到具有良好减摩耐磨性能的陶瓷涂层,试验采用钛酸四丁脂和硅烷偶联剂(KH560)制备Ti-Si有机膜先驱体,以激光为热源,采用先驱体转换法(PDC法)制备了复合陶瓷涂层。研究发现,陶瓷涂层中有机官能团随着激光功率增大不断减少,200 W与400 W激光条件下制备的Ti-Si陶瓷涂层化学键类型主要为Si-O-Si、Ti-O、Si-C等,先驱体无机化程度显著提高,而在600 W和800 W激光条件下制备的陶瓷涂层无机化程度更高,无机化程度较低时涂层摩擦因数较小,无机化程度较高时涂层耐磨性较好。试验表明,按KH560和钛酸四丁酯质量比为1∶1.8,固化温度80℃固化时间30 min,采用氩气作为保护气体,激光功率为600 W,激光波长为980 nm,扫描速率为14 mm/s,搭接率为3%,"1"字形连续激光扫描一次,所制备的陶瓷涂层耐磨性较好,3 N压力时其磨损主要为磨粒磨损,相对于45钢基体减摩80%以上。
Composite Ceramic Coatings have good corrosion resistance and wear-resistance property.They are widely used in automobiles,ships,electronics,and buildings because of their excellent performance and low costs.In order to obtain ceramic coatings with good wear-resistance property,the experiment used tetrabutyl titanate and silane coupling agent(KH60)to make Ti-Si organic film precursor,used laser as the heat source and created composite ceramic coating with the use of precursor conversion method(PDC method).The study shows that the organic functional groups of ceramic coatings decrease with the increase in laser power.Under the conditions of 200 W and 400 W lasers,the types of Ti-Si ceramic coating chemical bond are mainly Si-O-Si,Ti-O,and Si-C and the inorganic degree of the precursors is increased significantly.Furthermore,under the conditions of 600 W and 800 W lasers,the ceramic coatings are higher in their inorganic degree.The friction coefficient of the coatings is smaller when the inorganic degree is lower,and the abrasive wear resistance of coatings increases when the inorganic degree is higher.The experiment shows that if the mass ratio between KH560 and tetrabutyl titanate is 1∶1.8,the curing temperature 80 degrees,the curing time 30 minutes,argon the protective gas,the laser power 600 W,the laser wavelength 980 nm,the scan rate 14 mm/s,the lapping rate three percent,and the continuous laser of the figure"1"method scans it,the wear-resistance property of ceramic coatings will become better,and under the pressure of 3 N,its wear is mainly abrasive wear.Compared with the 45 steel,the friction achieved a relative decrease of 80%.
作者
王思捷
刘照围
王潇
WANG Sijie;LIU Zhaowei;WANG Xiao(National Engineering Research Center for Mechanical Product Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China;Armored Investigation of Combat Support,Army Academy of Armored Forces Bengbu Campus,Bengbu 233000,China;Department of Weapons and Control,Army Academy of Armored Forces,Beijing 100072,China)
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2020年第5期83-89,共7页
China Surface Engineering
基金
国家自然科学基金(51805541,51575526)
作者简介
通信作者:王潇(1993—),女(汉),助教,硕士,研究方向:电子与激光技术,E-mail:501785733@qq.com
