| Pulsed electrodeposition of hydroxyapatite on titanium substrate in solution containing hydrogen peroxide |
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| 引用本文： | 陈星宇 赵中伟 陈爱良 李洪桂. Pulsed electrodeposition of hydroxyapatite on titanium substrate in solution containing hydrogen peroxide[J]. 中国有色金属学会会刊, 2007, 17(3): 617-621. DOI: 10.1016/S1003-6326(07)60144-7 |
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| 作者姓名： | 陈星宇 赵中伟 陈爱良 李洪桂 |
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| 作者单位： | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| 摘 要： | Hydroxyapatite（HAP） coatings were prepared on the titanium substrate in the electrolyte containing H2O2 by the pulse electrodeposition. The introduction of H2O2 restrains the evolution of H2 and improves the adhesive strength between coatings and substrate. The results of pulse electrodeposition show that the relaxation time of the pulse is beneficial to growth of HAP because it makes ions diffuse from bulk to the surface of electrode and reduces concentration polarization in the next pulse time. It is beneficial to the increase of the duty circle of the pulse for deposition of HAP, but the result is not good if it is increased excessively. With increasing potential, it is good for the growth of HAP coatings. If the potential is too high, if is easy for HAP coatings to drop off during the process of electrodeposition under too intensive polarization, such as -1.0 V （vs SCE）, and there is not many coatings on the substrate. The combination of pulse electrodeposition and addition of hydrogen peroxide can assuredly improve the physico-chemical properties ofhydroxyapatite coatings.
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| 关 键 词： | 脉冲电极沉积 恒电势 羟磷灰石 钛基质 |
| 收稿时间： | 2006-06-30 |
| 修稿时间： | 2006-06-302006-12-04 |
Pulsed electrodeposition of hydroxyapatite on titanium substrate in solution containing hydrogen peroxide |
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| CHEN Xing-yu,ZHAO Zhong-wei,CHEN Ai-liang,LI Hong-gui. Pulsed electrodeposition of hydroxyapatite on titanium substrate in solution containing hydrogen peroxide[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(3): 617-621. DOI: 10.1016/S1003-6326(07)60144-7 |
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| Authors: | CHEN Xing-yu ZHAO Zhong-wei CHEN Ai-liang LI Hong-gui |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | Hydroxyapatite(HAP) coatings were prepared on the titanium substrate in the electrolyte containing H2O2 by the pulse electrodeposition. The introduction of H2O2 restrains the evolution of H2 and improves the adhesive strength between coatings and substrate. The results of pulse electrodeposition show that the relaxation time of the pulse is beneficial to growth of HAP because it makes ions diffuse from bulk to the surface of electrode and reduces concentration polarization in the next pulse time. It is beneficial to the increase of the duty circle of the pulse for deposition of HAP, but the result is not good if it is increased excessively. With increasing potential, it is good for the growth of HAP coatings. If the potential is too high, it is easy for HAP coatings to drop off during the process of electrodeposition under too intensive polarization, such as -1.0 V (vs SCE), and there is not many coatings on the substrate. The combination of pulse electrodeposition and addition of hydrogen peroxide can assuredly improve the physico-chemical properties of hydroxyapatite coatings. |
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| Keywords: | pulsed electrodeposition potentiostatic electrodeposition hydroxyapatite titanium substrate hydrogen peroxide coatings |
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