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HA涂層的電結(jié)晶-水熱合成及其附著性與結(jié)構(gòu)穩(wěn)定性探討
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R318.08

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中法先進(jìn)研究計(jì)劃項(xiàng)目,教育部“跨世紀(jì)人才培養(yǎng)計(jì)劃”項(xiàng)目


Study of Process and Properties of the Hydroxyapatite Biocoatings Fabricated by Electrocrystallization and Hydrothermal Synthesis
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    摘要:

    采用電結(jié)晶水熱合成法在室溫條件下從含鈣、磷離子的電解水溶液中電結(jié)晶沉積磷酸鈣涂層，經(jīng)蒸汽處理和真空煅燒后在鈦合金基體上獲得羥基磷灰石生物涂層．用ＳＥＭ，ＸＲＤ，ＩＲ分析了涂層的組織、結(jié)構(gòu)和化學(xué)組成，分析了羥基磷灰石涂層的形成原理，用粘結(jié)拉伸法測(cè)量了涂層的結(jié)合強(qiáng)度，并在模擬體液中研究了涂層的生物化學(xué)穩(wěn)定性．結(jié)果表明：電結(jié)晶形成的ＣａＨＰＯ４·２Ｈ２Ｏ涂層經(jīng)水熱處理后，轉(zhuǎn)變?yōu)榱u基磷灰石．涂層由針狀晶體組成，均勻性和粘結(jié)性好，純度高；涂層的結(jié)合強(qiáng)度在１５ＭＰａ左右，涂層在模擬體液中浸泡１２個(gè)月后化學(xué)成分并未發(fā)生

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    The electrocrystallization hydrothermal synthesis process was used for fabricating hydroxyapatite biocoatings on metallic substrates at low temperatures with aqueous electrolytes containing Ca and P bearing ions. Scanning electron microscopy (SEM) , X ray diffraction (XRD) and infrared spectroscopy (IR) were used to analyze the morphology, structure and chemical composition of the coatings. Bonding strength and biocompatibility of the coatings were measured. The results show that the coatings prepared by this process are wholly composed of needle like hydroxyapatite, and hvae a good uniformity and high purity. The bonding strength is about 15 MPa. Though the mass of the coating decreases as the coating is immersed in the Ringer's solution for 12 months, no changes in the phase composition and morphology were observed.

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黃立業(yè),李浩,付濤,徐可為. HA涂層的電結(jié)晶-水熱合成及其附著性與結(jié)構(gòu)穩(wěn)定性探討[J].稀有金屬材料與工程,1999,(3):~143.[Huang Liye, Li Hao, Fu Tao, Xu Kewei. Study of Process and Properties of the Hydroxyapatite Biocoatings Fabricated by Electrocrystallization and Hydrothermal Synthesis[J]. Rare Metal Materials and Engineering,1999,(3):~143.]
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