BaTiO_(3)铁电单晶不同极性表面接触角研究  

The Contact Angle Study of Polarization Property on BaTiO_(3) Single Crystal Surface

作　　者：何鹏飞 何东昱 HE Peng-fei;HE Dong-yu(National Key Laboratory for Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China)

机构地区：[1]陆军装甲兵学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《山东工业技术》2020年第6期18-22,共5页Journal of Shandong Industrial Technology

基　　金：国家自然科学基金青年科学基金项目(51805539);清华大学摩擦学国家重点实验室开放基金(SKLTKF19B07)。

摘　　要：为了阐明不同取向铁电单晶极性和非极性表面性能的差异,采用JY-PHa接触角测量仪对不同极化取向的BaTiO_(3)单晶体(001)表面的接触角进行表征,并对结果进行了单因素方差分析。结果表明,c畴取向晶体表面的接触角小于a畴取向晶体表面的接触角,且数据的离散性小。极性的c畴表面具有附加的表面能,极性水分子更容易吸附在极性的c畴表面,导致a畴和c畴表面润湿性的差异。In this article, the contact angles of BaTiO_(3) single crystal(001) surface were tested by using JY-PHa contact angle tester and the experimental data were analyzed by means of one-way ANOVA. The results indicate that the contact angle of c domain surface is smaller than that of a domain surface, suggesting that c domain surface has better wettability. Polarization charge supplies c domain surface with additional electrostatic energy, thus c domain has higher surface energy than a domain. For the higher surface energy, polar H_(2)O molecules prefer to adsorb on the c domain surface to neutralize the surface charge. Due to the strong interaction between electric dipoles, the c domain surfaces show better wettability performance.

关 键 词：BaTiO_(3)单晶 极化取向 接触角 单因素方差分析 

分 类 号：TQ174[化学工程—陶瓷工业]