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溶液鈣濃度和水熱合成條件對微弧氧化TiO2／羥基磷灰石復(fù)合膜層形貌和組成的影響
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TG174.451 R318.08

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國家自然科學(xué)基金資助項(xiàng)目(50002008)和陜西省科技攻關(guān)計(jì)劃重點(diǎn)項(xiàng)目(2000K-G1)


Influence of Ca Concentration in Electrolyte and Hydrothermal Conditions on the Morphology and Composition of the TiO2/Hydroxyapatite Composite Layer by Microarc Oxidation
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    摘要:

    鈦在含鈣磷的溶液中微弧氧化，表面形成含有鈣磷元素的，均勻多孔的氧化膜層，水熱合成后轉(zhuǎn)化為含羥基磷灰石晶體的復(fù)合氧化膜。研究表明：鈣離子濃度未使膜層的形貌和相組成發(fā)生明顯變化；僅在較低的濃度下增加溶液Ca^2 的濃度，膜層中Ca，P元素的相對含量和Ca／P比都會增加；在不同的水熱溫度和溶液鈣濃度下，得到的羥基磷灰石具有不同的晶體形貌，相對含量和Ca／P比；縮短恒溫時(shí)間可以使HA晶粒細(xì)化。這為優(yōu)化生物醫(yī)用鈦表面TiO2／羥基磷灰石復(fù)合膜層的成分和形貌提供了依據(jù)。

    Abstract:

    It was found that a homogeneous and porous titania layer containing Ca and P was formed and converted into a duplex oxidation layer with hydroxyapatite crystallography by the micro arc oxidation of titanium in calcium phosphate electrolyte. The layer morphology and phase composition were not significantly changed by the Ca concentration. Only the concentration of Ca2+ions in solution, the related Ca and P content and the Ca/P atom ratio in the layer increase with increase of Ca concentration in the lower concentration of Ca. It was noted that the HA crystal morphology, the phase ratio and the Ca/P ratio vary with the hydrothermal temperature and Ca concentration of the electrolyte. The HA crystals can be fined by shortening the hydrothermal time. The above results contribute to the optimization of the composition and morphology of the TiO2/hydroxyapatite composite layer on biomedical titanium.

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張勇 黃平 徐可為 憨勇.溶液鈣濃度和水熱合成條件對微弧氧化TiO2／羥基磷灰石復(fù)合膜層形貌和組成的影響[J].稀有金屬材料與工程,2003,(12):1007~1010.[Zhang Yong, Huang Ping, Xu Kewei, Han Yong. Influence of Ca Concentration in Electrolyte and Hydrothermal Conditions on the Morphology and Composition of the TiO2/Hydroxyapatite Composite Layer by Microarc Oxidation[J]. Rare Metal Materials and Engineering,2003,(12):1007~1010.]
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  • 最后修改日期:2002-05-29
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