庞晓军,邓畅光,徐丽萍,邓春明,张小锋.聚四氟乙烯/Al3O2-TiO2复合涂层的制备及其疏水性能研究[J].表面技术,2017,46(3):143-150.
PANG Xiao-jun,DENG Chang-guang,XU Li-ping,DENG Chun-ming,ZHANG Xiao-feng.Preparation of PTFE/Al3O2-TiO2 Composite Coating and Its Hydrophobic Property[J].Surface Technology,2017,46(3):143-150 |
| 聚四氟乙烯/Al3O2-TiO2复合涂层的制备及其疏水性能研究 |
| Preparation of PTFE/Al3O2-TiO2 Composite Coating and Its Hydrophobic Property |
| 投稿时间：2016-09-17 修订日期：2017-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.03.022 |
| 中文关键词: 大气等离子喷涂 溶胶-凝胶 复合涂层 粗糙度 结合力 疏水性能 二元粗糙结构 |
| 英文关键词:atmospheric plasma spraying sol-gel composite coating the roughness adhesion force hydrophobic property dual rough structure |
| 基金项目:广东省科技厅国际科技合作（2014B050502008）；广东省科技厅对外科技合作项目（2013B050800031）；广东省自然科学基金（2016A030312015） |
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| Author | Institution |
| PANG Xiao-jun | 1.School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2.Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510651, China |
| DENG Chang-guang | Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510651, China |
| XU Li-ping | Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510651, China |
| DENG Chun-ming | Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510651, China |
| ZHANG Xiao-feng | Key Lab of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510651, China |
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| 中文摘要: |
| 目的 在铝合金表面制备耐磨、耐蚀、高结合强度的疏水涂层。方法 采用大气等离子喷涂（APS）在铝合金基体上制备AT（Al3O2-TiO2）涂层，在AT涂层上采用溶胶-凝胶法制备聚四氟乙烯（PTFE）面层，借助扫描电子显微镜、X射线衍射仪、3D形貌仪、接触角测试仪等仪器对涂层的显微结构、成分、粗糙度、接触角进行表征。结果 喷距为120 mm、电流为680 A、送粉量为18 g/min的条件下，实心AT涂层和空心AT涂层表面粗糙度为6.99 μm、6.13 μm，孔隙率为5.88%、15.18%，硬度为945.82HV0.3、768.1HV0.3，与基体的结合强度为32 MPa、28 MPa，实心AT涂层与PTFE涂层的结合强度为19 MPa。实心PTFE/AT复合涂层与水的静态接触角最大可达130.9°，PTFE涂层表面含有氟化物和硅化物。结论 实心粉末AT涂层表面粗糙度较大，综合性能优于空心粉末AT涂层，因此，将实心AT涂层作为复合涂层的底层。实心PTFE/AT复合涂层具有与荷叶表面相仿的微纳米二元粗糙结构，具有良好的疏水性能，疏水性能与表面含氟物质的疏水基团以及低表面能的二元粗糙结构相关。 |
| 英文摘要: |
| The work aims to prepare hydrophobic coating of wear resistance, corrosion resistance and high bonding strength on the aluminum alloy surface. The AT (Al3O2-TiO2) coatings were prepared on the substrate of the aluminum alloy by using atmospheric plasma spraying (APS). The PTFE coatings were prepared on the surface of AT coating by virtue of sol-gel method. The microstructure, composition, roughness and static contact angle were characterized by scanning electron microscope, X-ray diffraction, 3D topography tester and contact angle tester, respectively. Provided with following process parameters: spray distance of 120 mm, current of 680 A and powder feeding rate of 18 g/min, the roughness of solid powder AT coating and hollow powder AT coating is 6.99 μm, 6.13 μm, respectively; porosity 5.88%, 15.18%; hardness 945.82HV0.3, 768.1HV0.3; adhesion force with matrix 32 MPa, 28 MPa; and adhesion force between the solid AT coating and PTFE coating 19 MPa. The static contact angle of the solid PTFE/AT composite coating with water was up to 130.9°. The surface of PTFE coating contained fluoride and silicide. The overall performance of AT coating prepared by solid irregular AT powder is significantly superior to that of AT coating prepared by hollow spherical AT powder, and the roughness of solid AT coating is higher than that of the hollow AT coating. Therefore the solid AT coating is chosen as the substrate of composite coating. The solid PTFE/AT composite coatings have a nanostructure dual rough structure similar with lotus leaf surface. The composite coating is of good hydrophobic properties, the hydrophobic property related to the hydrophobic groups of the fluorine-containing substance on the coating surface and the dual rough structure with low surface energy. |
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