微束等离子喷涂羟基磷灰石涂层相结构的微拉曼光谱研究

doi:10.11896/cldb.18010273

材料导报

2019, Vol. 33

Issue (10): 1634-1639 https://doi.org/10.11896/cldb.18010273

无机金属及其复合材料

微束等离子喷涂羟基磷灰石涂层相结构的微拉曼光谱研究

刘晓梅¹, 贺定勇^1,2, 周正^1,2, 王国红², 王曾洁², 吴旭²

1 北京工业大学材料科学与工程学院,北京 100124
2 北京市生态环境材料及其评价工程技术研究中心(北京工业大学),北京 100124

Study on Phase Structure of Micro-plasma Sprayed Hydroxyapatite Coatings by Micro-Raman Spectroscopy

LIU Xiaomei¹, HE Dingyong^1,2, ZHOU Zheng¹^{, 2}, WANG Guohong², WANG Zengjie², WU Xu²

1 College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124
2 Beijing Engineering Research Center of Eco-materials and LCA (Beijing University of Technology), Beijing 100124

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摘要羟基磷灰石(Hydroxyapatite,HA)涂层以其优异的生物相容性和骨传导性在生物医疗领域得到了广泛应用。然而, HA涂层的生物性能与其组织结构密切相关。本研究采用微束等离子喷涂技术,在Ti-6Al-4V基体上制备HA扁平粒子及HA涂层。采用扫描电镜(SEM)分别对原始HA粉末、HA扁平粒子表面和HA涂层截面的形貌进行了观察。通过微拉曼光谱对扁平粒子和涂层截面微区的相结构进行分析,得到磷酸基团(PO₄^3-)及羟基基团(OH^-)在所选定区域的信息,对900~1 000 cm^-1频率范围的内的微拉曼光谱进行分峰拟合,获得了微束等离子喷涂HA扁平粒子表面相分布情况以及HA涂层沿厚度方向相结构的变化。结果表明,单个HA扁平粒子以非晶相为主,而在涂层中,靠近基体部分的相组成以非晶相及分解相(β-TCP)为主,仅包含少量HA晶体相,随着离涂层与基体界面距离的增加,非晶相及分解相含量逐渐减少,HA相增多,在近涂层表面非晶相和分解相(β-TCP)略有增加。

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关键词: 微束等离子喷涂羟基磷灰石涂层微拉曼光谱扁平粒子相结构

Abstract: Hydroxyapatite (HA) coatings have been widely used in biomedical applications owing to their excellent biocompatibility and osteoconductivity. However, the biological properties of HA coatings are closely related to their microstructure. In this study, HA coating and splats were deposited onto Ti-6Al-4V substrates by micro-plasma spraying technique. Microstructure of the single splat and the cross-section of HA coating was characterized by scanning electron microscopy (SEM). The phase structure of splat and coating was investigated by micro-Raman spectroscopy to obtain the information of PO₄^3- and OH^-. The phase distribution in the surface of splat and the change of phases along the direction of coating thickness were obtained by using curve fitting of micro-Raman spectra in 900—1 000 cm^-1 frequency range. The results show that the splat mainly contains amorphous phase. Near the substrate-coating interface, coating is mainly composed of amorphous phase and decomposition phase (β-TCP) as well as a small amount of HA phase. With increasing distance from substrate-coating interface, the amorphous phase content decreased and HA content increased. Near coating surface, the decomposition phase and amorphous phase were slightly increased.

Key words: micro-plasma spraying hydroxyapatite coating micro-Raman spectroscopy splat phase structure

发布日期: 2019-05-16

ZTFLH:

TG174.442

基金资助: 国家自然科学基金(51471010)

通讯作者: dyhe@bjut.edu.cn

作者简介: 刘晓梅,2014年6月毕业于河北科技大学理工学院,获得工学学士学位。现为北京工业大学材料科学与工程学院的博士研究生,主要从事生物陶瓷涂层的制备和表征领域的研究。贺定勇,北京工业大学教授,博士研究生导师。1988.9—1996.3,在北京工业大学焊接专业硕士生学习,毕业后留校任教至今。2004年获得北京工业大学材料加工工程专业博士学位。2001.9—2002.7,同济大学留德预备部和北京语言大学出国留学人员培训部学习德语。2004.11—2005.10,国家留学基金委公派赴德国亚琛工业大学(RWTH Aachen University)材料研究所(IWW)和表面工程研究所(IOT)作访问学者。发表科研论文200余篇。申请国家发明专利100项,其中授权63项。研究工作主要围绕工程材料表面改性理论与技术、高性能焊接材料设计与评价、3D打印金属材料技术。负责完成科研项目50多项,包括国家重点研发计划课题、国家基金、北京市基金、市科委、市教委及企业委托项目。获省部级项目一、二、三奖各一项。

引用本文:

刘晓梅, 贺定勇, 周正, 王国红, 王曾洁, 吴旭. 微束等离子喷涂羟基磷灰石涂层相结构的微拉曼光谱研究[J]. 材料导报, 2019, 33(10): 1634-1639.
LIU Xiaomei, HE Dingyong, ZHOU Zheng, WANG Guohong, WANG Zengjie, WU Xu. Study on Phase Structure of Micro-plasma Sprayed Hydroxyapatite Coatings by Micro-Raman Spectroscopy. Materials Reports, 2019, 33(10): 1634-1639.

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http://www.mater-rep.com/CN/10.11896/cldb.18010273 或 http://www.mater-rep.com/CN/Y2019/V33/I10/1634

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