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首页> 外文会议>International Nanoelectronics Conference >Preparation and Formation Mechanism of Porous and Nanostructured TiO_2/BCP Coatings on Titanium
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Preparation and Formation Mechanism of Porous and Nanostructured TiO_2/BCP Coatings on Titanium

机译：多孔和纳米结构TiO_2 / BCP涂层对钛的制备和形成机理

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Porous and nanostructured TiO_2/biphasic calcium phosphate (BCP) composite coatings were prepared on titanium by plasma electrolytic oxidation (PEO). The phase composition, microstructure, thickness and surface roughness of the coatings were characterized. Their formation mechanism were also discussed. The results reveal that the TiO_2/BCP composite coatings mainly consist of anatase, rutile, β-tricalcium phosphate and hydroxyapatite. The surface of the coatings is porous, rough and nanostructured with grain diameter of 50-100 nm. A two-step electro-migration mode was proposed to explain the ion migration in electrolyte. The granules consisted of amorphous calcium phosphate compound and the ions in electrolyte were brought onto the coating surface by stirring and electro-migration roles during PEO process, sintered by plasma arc produced locally high temperature surrounding the anode, which accelerated its crystallization. Thus is thought to be the possible mechanism for the TiO_2/BCP composite coatings formation.
机译：通过等离子体电解氧化（PEO）在钛上制备多孔和纳米结构TiO_2 /双相磷酸钙（BCP）复合涂料。表征了涂层的相组合物，微观结构，厚度和表面粗糙度。还讨论了它们的形成机制。结果表明，TiO_2 / BCP复合涂层主要由锐钛矿，金红石，β-三磷酸盐和羟基磷灰石组成。涂层的表面是多孔的，粗糙和纳米结构，粒径为50-100nm。提出了一种两步电迁移模式，以解释电解质中的离子迁移。通过搅拌和在PEO工艺期间，通过搅拌和电解质中的电解质中的离子组成的颗粒和电解质中的离子，通过等离子体弧烧结围绕阳极的局部高温，其加速其结晶。因此被认为是TiO_2 / BCP复合涂层形成的可能机制。

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