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多孔鈦表面無裂紋生物活化層的制備及表征
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國家重點基礎(chǔ)研究發(fā)展計劃(“973”項目)資助(2012CB619101)


Preparation and Characterization of Bioactive Coating without Cracks on Potous Titanium Surface
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    摘要:

    采用堿熱處理方法對多孔鈦進(jìn)行了表面活化處理,獲得了無裂紋的網(wǎng)狀微孔結(jié)構(gòu)的生物活化層。利用掃描電鏡(SEM)、X射線衍射儀(XRD)和X射線光電子能譜儀(XPS)等設(shè)備對生物活化層進(jìn)行表征,最后用模擬體液中浸泡的方法檢測了該活化層的生物活性。結(jié)果表明:當(dāng)NaOH溶液濃度低于8 mol/L,堿處理時間少于36 h時,多孔鈦孔內(nèi)外壁都可獲得無裂紋的生物活化層,該活化層呈現(xiàn)網(wǎng)狀微孔結(jié)構(gòu),是由金紅石結(jié)構(gòu)的二氧化鈦和鈦酸鈉組成的混合物質(zhì)。浸泡SBF后結(jié)果顯示該活化層在浸泡3 d后就已誘導(dǎo)產(chǎn)生了類骨的碳羥基磷灰石,表現(xiàn)出了很好的生物活性。

    Abstract:

    A bioactive coating with no cracks was produced on the porous titanium by alkali-heat treatment. The morphology, element content and phase composition of the coating were analyzed by SEM, XRD and XPS. It is found that a micro-network structure mainly composed of bioactive sodium titanate and rutile covers the interior and exterior of porous titanium cells. And bioactive network without cracks is achievable with a given set of process parameters of the alkaline solution concentration and alkali-heat treatment time. After immersion into the SBF solution for 3 d, a carbonate-hydroxylapatite was detected by XRD on the cell surface of the porous titanium, showing a good compatibility of the porous titanium with bone.

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王曉花,李金山,胡 銳,寇宏超,周 廉.多孔鈦表面無裂紋生物活化層的制備及表征[J].稀有金屬材料與工程,2014,43(6):1392~1396.[Wang Xiaohua, Li Jinshan, Hu Rui, Kou Hongchao, Zhou Lian. Preparation and Characterization of Bioactive Coating without Cracks on Potous Titanium Surface[J]. Rare Metal Materials and Engineering,2014,43(6):1392~1396.]
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  • 收稿日期:2013-06-19
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  • 在線發(fā)布日期: 2014-11-13
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