【摘要】：為研究沉積溫度對(duì)羥基磷灰石涂層生長(zhǎng)的影響,制備了不同溫度條件下成分恒定的仿生沉積液,并采用純鈦和不同孔徑的多孔鈦?zhàn)龌w,在其表面仿生沉積羥基磷灰石涂層,再將得到的涂層試樣浸泡在標(biāo)準(zhǔn)模擬體液中檢測(cè)其生物活性.通過(guò)X射線衍射儀(XRD)分析涂層物相結(jié)構(gòu),用金相顯微鏡、環(huán)境掃描電子顯微鏡(ESEM)表征涂層形貌,利用能譜分析儀(EDS)計(jì)算鈣磷比.研究表明:基體孔徑增大,有利于沉積液進(jìn)入到孔隙且表面粗糙度相對(duì)增大,從而使得HA涂層變得均勻致密;沉積溫度由30℃升高至37℃,會(huì)加快HA涂層致密均勻的生長(zhǎng),但溫度升高到44℃時(shí),HA晶粒變粗大,涂層變得疏松化;模擬體液浸泡后,Ti/HA涂層試樣表面有新的HA生成,且Ca/P比接近標(biāo)準(zhǔn)的1.67,表明該Ti/HA涂層試樣具有良好的生物活性.適當(dāng)增大鈦基體孔徑,提高沉積液溫度,可以得到均勻致密的HA生物活性涂層.
[Abstract]:In order to study the effect of deposition temperature on the growth of hydroxyapatite coating, bionic deposition solution with constant composition at different temperature was prepared, and pure titanium and porous titanium with different pore size were used as substrate to prepare bionic hydroxyapatite coating on its surface. Then the coating sample was soaked in standard simulated body fluid to detect its biological activity. The phase structure of the coating was analyzed by X-ray diffractometer (XRD). The morphology of the coating was characterized by metallographic microscope and environmental scanning electron microscope (ESEM). The Ca / P ratio was calculated by (EDS). The results show that the increase of matrix pore size is favorable to the deposition solution entering into the pore and the surface roughness increases relatively, which makes the HA coating uniform and compact. Increasing the deposition temperature from 30 鈩，

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