微波烧结法制备羟基磷灰石/TiO_2复合涂层
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摘要
钛合金作为骨植入材料具有耐腐蚀和良好的力学性能,但是没有生物活性。以医用钛合金Ti-6Al-4V为基体,利用微波烧结在钛合金基体表面成功制备出羟基磷灰石/二氧化钛(HA/TiO_2)复合涂层。利用扫描电镜(SEM)、X射线衍射仪(XRD)、模拟体液(SBF)对涂层表面形貌、成分、活性进行了分析。结果表明,由HA和TiO_2组成的涂层在基体表面分布均匀,并可以在基体表面观察到针状、片状的HA。SBF实验结果观察到,HA在经过涂层的钛合金基体表层持续沉积,形成了更加均匀的片层、针状表层结构,而相比之下没有涂层的钛合金表面仅仅形成了容易脱落的块状表层结构。实验结果说明,表面复合涂层的存在提高了材料表面的生物活性,为骨细胞的进一步粘附生长提供了较好的生存空间。
Titanium alloy has good corrosion resistance and good mechanical properties,but it is lack of biological activity.HA/TiO_2 composite coating was successfully prepared on the surface of Ti-6 Al-4 Vtitanium alloy via microwave sintering technique.Scanning electron microscopy(SEM),X-ray diffraction(XRD)and simulated body fluid(SBF)were used to analyze the surface morphology,composition and activity of coating,respectively.The results showed that the coating composed of HA and TiO_2 was uniformly distributed on the surface of substrate,and the morphology of needle and flake can be observed.The results of SBF showed that hydroxyapatite continuously deposited on the surface which had composite coatings,and formed more uniform sheet and needle-like surface structure compared with pristine titanium alloy which surface only formed massive structure that easy to fall off.These results indicated that HA/TiO_2 coating can improve the bioactivity of material,and provided a better living space for the further growth of bone cells.
Titanium alloy has good corrosion resistance and good mechanical properties,but it is lack of biological activity.HA/TiO_2 composite coating was successfully prepared on the surface of Ti-6 Al-4 Vtitanium alloy via microwave sintering technique.Scanning electron microscopy(SEM),X-ray diffraction(XRD)and simulated body fluid(SBF)were used to analyze the surface morphology,composition and activity of coating,respectively.The results showed that the coating composed of HA and TiO_2 was uniformly distributed on the surface of substrate,and the morphology of needle and flake can be observed.The results of SBF showed that hydroxyapatite continuously deposited on the surface which had composite coatings,and formed more uniform sheet and needle-like surface structure compared with pristine titanium alloy which surface only formed massive structure that easy to fall off.These results indicated that HA/TiO_2 coating can improve the bioactivity of material,and provided a better living space for the further growth of bone cells.
引文
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[3]付涛,憨勇,徐可为,等.溶胶-凝胶法二氧化钛薄膜诱导沉积磷酸钙层[J].硅酸盐学报,2003,31(4):402-405.
[4]黄朝,吴宇,夏海滨,等.微波诱导羟基磷灰石/钛合金界面反应的研究[J].表面技术,2013,42(1):53-55.
[5]夏承森,温翠莲,詹晓章,等.微弧氧化法制备镁基羟基磷灰石/碳纳米管复合生物涂层及其性能研究[J].科技导报,2016,34(8):60-66.
[6]黄勇,庞小峰,何从军,等.医用钛合金表面羟基磷灰石/二氧化锆梯度复合涂层的制备[J].电镀与涂饰,2011,30(1):78-82.
[7]王涛,Wong C T,Tang C Y,等.由钛合金/多壁碳纳米管/纳米羟基磷灰石混合微波烧结而成的复合材料生物安全性的初步评价[J].实用口腔医学杂志,2013,29(2):165-169.
[8]Chen Ling,Tang Chak Yin,Ku Harry Siu-lung,et al.Microwave sintering and characterization of polypropylene/multiwalled carbon nanotube/hydroxyapatite composites[J].Composites Part B:Engineering,2014,56(1):504-511.
[9]Choy Man Tik,Tang Chak Yin,Chen Ling,et al.In vitro and in vivo performance of bioactive Ti6Al4V/TiC/HA implants fabricated by a rapid microwave sintering technique[J].Materials Science and Engineering:C,2014,42:746-756.
[10]Tang C Y,Wong C T,Zhang L N,et al.In situ formation of Ti alloy/Tic porous composites by rapid microwave sintering of Ti6Al4V/MWCNTs powder[J].Journal of Alloys and Compounds,2013,557:67-72.
[11]Tang C Y,Zhang L N,Wong C T,et al.Fabrication and characteristics of porous NiTi shape memory alloy synthesized by microwave sintering[J].Materials Science and Engineering:A,2011,528(18):6006-6011.
[12]Huan Zhou,Maryam Nabiyouni,Sarit B,et al.Microwave assisted apatite coating deposition on Ti6Al4Vimplants[J].Materials Science and Engineering:C,2013,33(7):4435-4443.
[13]Kokubo T,Takadama H.How useful is SBF in predicting in vivo bone bioactivity?[J].Biomaterials,2006,27(15):2907-2915.
[14]董志红,聂志萍,周长春.自然唾液中介孔生物活性玻璃诱导牙釉质仿生再矿化研究[J].无机材料学报,2016,31(1):88-94.