本文選題：鎂黃長(zhǎng)石 + 放電等離子燒結(jié)��； 參考：《無(wú)機(jī)材料學(xué)報(bào)》2017年08期

【摘要】：鈣硅基生物陶瓷具有良好的生物活性和細(xì)胞相容性,在生物醫(yī)療領(lǐng)域具有廣闊的發(fā)展前景。但是其粉體燒結(jié)性能差的缺點(diǎn)導(dǎo)致很難獲得致密的陶瓷材料,阻礙了其應(yīng)用的進(jìn)程。本研究采用化學(xué)共沉淀法制備了純度高且燒結(jié)活性好的鎂黃長(zhǎng)石粉體,然后采用放電等離子燒結(jié)技術(shù)(SPS)制備了鎂黃長(zhǎng)石陶瓷材料。通過(guò)X射線衍射(XRD)和掃描電子顯微鏡(SEM)表征了樣品的組成結(jié)構(gòu)和顯微形貌,并通過(guò)阿基米德法和模擬體液浸泡法分析了鎂黃長(zhǎng)石陶瓷樣品的致密度和生物活性。研究結(jié)果表明,采用SPS技術(shù)在1170℃、70 MPa保溫5 min條件下可獲得致密度超過(guò)99%的鎂黃長(zhǎng)石陶瓷材料。在模擬體液中浸泡3 d,陶瓷樣品表面出現(xiàn)磷酸鹽的沉積,浸泡7 d后生成了類骨羥基磷灰石,說(shuō)明SPS技術(shù)制備的致密鎂黃長(zhǎng)石生物陶瓷具有良好的誘導(dǎo)沉積類骨磷灰石能力。
[Abstract]:Calcium-silicon-based bioceramics have good bioactivity and cytocompatibility, and have a broad prospect in the field of biomedicine. However, it is difficult to obtain dense ceramic materials due to its poor sintering performance, which hinders the process of its application. In this study, magnesium-yellow feldspar powders with high purity and good sintering activity were prepared by chemical coprecipitation method, and then magnesium-yellow feldspar ceramics were prepared by spark plasma sintering (SPS) technique. The composition and morphology of the samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The density and bioactivity of the samples were analyzed by Archimedes method and simulated body fluid immersion method. The results show that more than 99% magnesium-yellow feldspar ceramics can be obtained by using SPS technology at 1170 鈩，

本文編號(hào)：1986454