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4825 |
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Tuesday, May 10, 2016, Room 3C + 3D 11:30 AM Ceramic Coatings I |
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Super-hydrophobic surface prepared by lanthanide oxide ceramics deposition through PS-PVD process |
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Chengxin Li / Xi'an Jiaotong University, P.R. China Jie Li* / Xi'an Jiaotong University, China Qingyu Chen/ Xi'an Jiaotong University, China Shanlin Zhang/ Xi'an Jiaotong University, China Xiaotao Luo/ Xi'an Jiaotong University, China Guanjun Yang/ Xi'an Jiaotong University, China Changjiu Li/ Xi'an Jiaotong University, China |
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Super-hydrophobic surface has been received widespread attention in recent years. Both of the types of materials and morphology of their surface have a significant impact on its hydrophobicity property. A novel method to fabricate super-hydrophobic surface is introduced in the present paper. Lanthanide oxide is considered to belong to intrinsic hydrophobic material. We try to construct rough structure using two kinds of lanthanide oxide materials GDC and SDC by PS-PVD method. The coating surface was also modified by a material named 1,1,2,2-Tetrahydroperfluorodecyltrimethoxysilane (FAS) to reduce surface free energy as a contrast. During the PS-PVD process, a shrouded plasma torch was used and the samples were placed on different distance on the same straight line to realize shielding and depositing coating surface with different morphology. The surface morphology was characterized by SEM which shown an island structure consisted of nano particles, like the hierarchical structure in lotus leaf. The nano particles were grown larger with the shielding stage decreased. The wettability of the samples was measured by contact angle measurement. The results show that the wettability of as-sprayed coating surface was not only related to the intrinsic properties of materials but also closely related to the size of the surface structure. |