热处理对钛基体表面电泳沉积GO/HA生物活性涂层的影响

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (7): 2558-2563.

热处理对钛基体表面电泳沉积GO/HA生物活性涂层的影响

韩委委, 刘莉, 余本锐, 朱庆霞

天津工业大学材料科学与工程学院,天津市先进纤维与储能重点实验室,天津 300387

收稿日期:2022-03-04 修回日期:2022-04-21 出版日期:2022-07-15 发布日期:2022-08-01
通讯作者: 朱庆霞,博士,教授。E-mail:qingxia-zhu@163.com
作者简介:韩委委(1997—),女,硕士研究生。主要从事功能陶瓷方面的研究。E-mail:hww3366@126.com
基金资助:
天津市自然科学基金(19JCZDJC37800);天津市科技特派员项目(20YDTPJC01690)

Effect of Heat Treatment on GO/HA Bioactive Coating Deposited by Electrophoresis on Titanium Substrate

HAN Weiwei, LIU Li, YU Benrui, ZHU Qingxia

Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering,Tiangong University, Tianjin 300387, China

Received:2022-03-04 Revised:2022-04-21 Online:2022-07-15 Published:2022-08-01

摘要/Abstract

摘要： 采用电泳沉积法在钛基体表面制备氧化石墨烯(GO)/羟基磷灰石(Ca₁₀(PO₄)₆(OH)₂, HA)复合涂层,通过XRD和SEM等测试手段对不同热处理条件下得到的GO/HA涂层进行表征。研究结果表明,热处理有助于促进涂层中HA结晶度的提高,600 ℃和800 ℃的热处理温度并没有导致HA发生热分解,但有可能破坏了涂层中GO的有序晶体结构。GO/HA涂层具有优异的生物活性,但随热处理温度的升高,涂层的润湿性和生物活性下降。热处理过程有利于涂层致密,加强涂层与基体的结合,800 ℃热处理后的涂层结合强度高达25.31 MPa。

关键词: 热处理, 羟基磷灰石, 氧化石墨烯, 电泳沉积涂层, 钛基体, 生物活性

Abstract: Graphene oxide (GO)/hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂, HA) composite coating was prepared on titanium substrate by electrophoretic deposition. GO/HA coatings obtained under different heat treatment conditions were characterized by XRD, SEM, and so on. The results indicate that heat treatment contributes to improve the crystallinity of HA. The HA in composite coating after heat treatment at 600 ℃ and 800 ℃ is not thermally decomposed, meanwhile, the ordered crystal structure of GO may be destroyed. GO/HA composite coatings haveexcellent bioactivity. However, the wettability and bioactivity of composite coatings are deteriorated with the increase of heat treatment temperature. In addition, the heat treatment process is beneficial to the compactness of GO/HA composite coatings and the bonding with the substrate. The adhesion strength of coating after heat treatment at 800 ℃ reaches 25.31 MPa.

Key words: heat treatment, hydroxyapatite, graphene oxide, electrophoretic deposition coating, titanium substrate, bioactivity

中图分类号:

TQ174

韩委委, 刘莉, 余本锐, 朱庆霞. 热处理对钛基体表面电泳沉积GO/HA生物活性涂层的影响[J]. 硅酸盐通报, 2022, 41(7): 2558-2563.

HAN Weiwei, LIU Li, YU Benrui, ZHU Qingxia. Effect of Heat Treatment on GO/HA Bioactive Coating Deposited by Electrophoresis on Titanium Substrate[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(7): 2558-2563.

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