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首页> 外文期刊>Inorganic materials: applied research >The boundary between the hydroxyapatite coating and titanium substrate
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The boundary between the hydroxyapatite coating and titanium substrate

机译：羟基磷灰石涂层与钛基体之间的边界

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摘要

The effect of the heating of a Ti substrate to 300 and 550°C on the microhardness of a hydroxyapatite (HA) plasma coating, Ti, and their interface is investigated in specimens in different states (as sprayed, after hydrothermal (650°C, 3 h) and vacuum heat treatment (800, 1000, 1100°C, 3 h)). It is shown that the preliminary heating of the substrate to 550°C leads to the interface microhardness increasing from 2.32 to 3.07 GPa, while the following heat treatment has a weak influence on that. After the heat treatment, the microhardness of the HA coating is increased from 3.0 to 3.8 GPa and the microhardness of the Ti substrate near the boundary is increased from 2.5 to 6.9 GPa. A slight effect of the heat treatment on the interface microhardness is explained by preservation of the interface structure formed under HA plasma spraying on the heated substrate. The distribution of chemical elements near the interface between the coating and substrate is studied by Auger electron spectroscopy (AES).
机译：在不同状态的样品中（如喷水，水热（650°C）后进行喷涂，研究了将Ti衬底加热至300和550°C对羟基磷灰石（HA）等离子涂层Ti及其界面的显微硬度的影响。 3 h）和真空热处理（800，1000，1100°C，3 h））。结果表明，将基板初步加热到550°C会使界面显微硬度从2.32 GPa增加到3.07 GPa，而随后的热处理对此影响不大。热处理后，HA涂层的显微硬度从3.0 GPa增加到3.8 GPa，靠近边界的Ti基底的显微硬度从2.5 GPa增加到6.9 GPa。热处理对界面显微硬度的轻微影响可通过保留在加热的基材上进行HA等离子喷涂形成的界面结构来解释。通过俄歇电子能谱（AES）研究了涂层与基材之间界面附近化学元素的分布。

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