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聚多巴胺接枝納米氧化鋅復(fù)合涂層對TC4合金表面修飾的影響研究
作者:
作者單位:

蘭州理工大學(xué)材料科學(xué)與工程學(xué)院

作者簡介:

通訊作者:

中圖分類號:

TG178

基金項目:

甘肅省科技重大專項項目(17ZD2GC001)、蘭州理工大學(xué)紅柳一流學(xué)科建設(shè)基金、蘭州理工大學(xué)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計劃項目立項資助(DC2019190)


Study on the Effect of Polydopamine Grafted Nano-ZnO Composite Coating on Surface Modification of TC4 Alloy
Author:
Affiliation:

School of Material Science and Engineering,Lanzhou University of Technology

Fund Project:

Major special projects of science and technology in Gansu Province；Funding for the establishment of the undergraduate innovation and entrepreneurship training program by Lanzhou University of Technology

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    摘要:

    為改善Ti6Al4V(TC4)作為骨科硬組織植入物長期在人體內(nèi)服役時發(fā)生細菌感染及體液腐蝕后有害離子釋放的弊端,采用溶膠-凝膠法梯度動態(tài)升溫處理氧化鋅(ZnO)溶膠,分別在TC4表面成功制備了納米ZnO涂層和ZnO/PDA(聚多巴胺)復(fù)合涂層。系統(tǒng)分析了兩種涂層的物相結(jié)構(gòu)、微觀形貌、涂層結(jié)合力、潤濕性以及在模擬體液中的腐蝕性能。研究結(jié)果表明：TC4基材上所制備的ZnO/PDA復(fù)合涂層相較于單一ZnO涂層具有更為均勻的納米ZnO顆粒分布,PDA對金屬離子的螯合作用通過Ti-O-Zn鍵促進了基底與ZnO間的結(jié)合力,同時PDA的引入進一步提升了ZnO涂層的潤濕性、降低其表面粗糙度、改善了TC4的耐腐蝕性能。

    Abstract:

    In order to solve the problem that Ti6Al4V (TC4) alloy is prone to bacterial infection and release of harmful ions as an orthopedic hard tissue implant during long-term service in the human body, a sol-gel method was used to prepare nano-zinc oxide (ZnO) sol with gradient dynamic heating treatment, then the nano-ZnO coating and ZnO/PDA (polydopamine)composite coating were successfully formed on the surface of TC4. The phase structure, micro morphology, coating adhesion, wettability and corrosion performance of the two coatings in simulated body fluids were systematically analyzed. The result shows that the ZnO/PDA composite coating prepared on the TC4 substrate has a more uniform distribution of nano-ZnO particles than that of a single ZnO coating. The chelating effect of PDA on metal ions promotes the bonding force between the substrate and ZnO through the Ti-O-Zn bond. Simultaneously, the introduction of PDA further improves the wettability of the ZnO coating, reduces its surface roughness, and improves the corrosion resistance of TC4.

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胡勇,李申申,吳棟,李英新,康文江,張昊,張會瑩.聚多巴胺接枝納米氧化鋅復(fù)合涂層對TC4合金表面修飾的影響研究[J].稀有金屬材料與工程,2021,50(8):2876~2882.[Hu Yong, Li Shenshen, Wu Dong, Li Yingxin, Kang Wenjiang, Zhang Hao, Zhang Huiying. Study on the Effect of Polydopamine Grafted Nano-ZnO Composite Coating on Surface Modification of TC4 Alloy[J]. Rare Metal Materials and Engineering,2021,50(8):2876~2882.]
DOI：10.12442/j. issn.1002-185X.20200653

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  • 收稿日期:2020-08-31
  • 最后修改日期:2020-09-26
  • 錄用日期:2020-10-21
  • 在線發(fā)布日期: 2021-09-07
  • 出版日期: 2021-08-31