2+和La3+從涂層中溶出；溶液中Ca2+的溶出濃度在15 PPM ～ 40 PPM的范圍內隨浸泡時間的延長呈現(xiàn)波動上升的趨勢,La3+的析出濃度卻在0.15 PPB ～ 0.45 PPB之間隨著浸泡時間的延長呈現(xiàn)波動下降的趨勢。"/>

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激光熔覆稀土磷酸鈣陶瓷涂層及其在生理鹽水中的降解行為
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貴州大學材料與冶金學院,貴州大學材料與冶金學院,貴州大學材料與冶金學院,貴州大學材料與冶金學院,貴州大學材料與冶金學院,貴州大學材料與冶金學院

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TB34

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國家自然科學基金資助(No.51362004)；貴州省高層次創(chuàng)新型人才計劃 黔科合人才 (2015) 4009號; 貴州省科技廳貴州大學聯(lián)合基金 黔科合 LH 字 (2015) 7650號


Rare Earth doped Calcium Phosphate Ceramic Coating Fabricated by Laser Cladding and Its Degradation Behavior in Physiological Saline
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College of Materials and Metallurgy,Guizhou University,College of Materials and Metallurgy,Guizhou University,College of Materials and Metallurgy,Guizhou University,College of Materials and Metallurgy,Guizhou University,College of Materials and Metallurgy,Guizhou University,College of Materials and Metallurgy,Guizhou University

Fund Project:

National Natural Science Foundation of China (No. 51362004) ； High-level Innovative Talents Plan of Guizhou province (No. (2015) 4009)；The Joint Fund of Science and Technology Department of Guizhou Provice and Guizhou University Qiankehe LH (No. (2015) 7650).

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    摘要:

    利用激光熔覆技術,在醫(yī)用鈦合金表面制備梯度稀土磷酸鈣復合陶瓷涂層。采用OM、XRD、SEM、iCP-MS分別對涂層的界面結合、物相組成、顯微形貌、離子溶出進行考察。結果表明：經過激光熔覆后,能夠在鈦合金表面得到富含HA和β-TCP的梯度磷酸鈣陶瓷涂層,且涂層分為基材,合金化層,陶瓷層三個層次,各層間界面結合良好；磷酸鈣陶瓷涂層不斷被生理鹽水降解,重量不斷丟失,涂層在生理鹽水中能夠形成一種類骨磷灰石的新相；伴隨著涂層的降解,Ca2+和La3+從涂層中溶出；溶液中Ca2+的溶出濃度在15 PPM ～ 40 PPM的范圍內隨浸泡時間的延長呈現(xiàn)波動上升的趨勢,La3+的析出濃度卻在0.15 PPB ～ 0.45 PPB之間隨著浸泡時間的延長呈現(xiàn)波動下降的趨勢。

    Abstract:

    Rare earth doped calcium phosphate ceramic composite coating was prepared on the surface of titanium alloy by using laser cladding technology. The interface, phases, micromorphology and iron release of the coating were respectively measured by a series of experimental methods including Optical microscope, X-Ray Diffraction, Scanning Electronica Microscope, Inductively Coupled Plasma Mass Spectrometry. The results are shown that calcium phosphate ceramic composite coating is obtained on the titanium surface by laser cladding, and the coating is rich in hydroxylapatite and tricalcium phosphate. The Ca-P coating consist of three parts which are substrate, alloyed layer and ceramic layer. And its interface is bonding excellent. As the weight lost, the coating can be degraded by physiological saline. And it is found that a new apatite-like phase is formed on the surface of the coating which soaked in physiological saline for three weeks. With the degradation of the coating, Ca2+ iron and La3+ iron release to physiological saline. The concentration of Ca2+ is wavelike rise with time in the range from 15 PPM ～ 40 PPM. But the concentration of La3+ is fluctuation decreased with time in the range from 0.15 PPB ～ 0.45 PPB.

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朱益志,劉其斌,徐鵬,白楊,姚利蘭,姜晶晶.激光熔覆稀土磷酸鈣陶瓷涂層及其在生理鹽水中的降解行為[J].稀有金屬材料與工程,2017,46(11):3498~3502.[Zhu Yi-zhi, Liu Qi-bin, Xu Peng, Bai yang, Yao Li-lan, Jiang jing-jing. Rare Earth doped Calcium Phosphate Ceramic Coating Fabricated by Laser Cladding and Its Degradation Behavior in Physiological Saline[J]. Rare Metal Materials and Engineering,2017,46(11):3498~3502.]
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  • 收稿日期:2015-08-25
  • 最后修改日期:2016-01-11
  • 錄用日期:2016-02-24
  • 在線發(fā)布日期: 2017-12-13
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