SPS烧结制备生物活性镁黄长石陶瓷

doi:10.15541/jim20160614

无机材料学报 ›› 2017, Vol. 32 ›› Issue (8): 825-830.DOI: 10.15541/jim20160614 CSTR: 32189.14.10.15541/jim20160614

SPS烧结制备生物活性镁黄长石陶瓷

王明辉¹, 钟洪彬², 范宇驰³, 陈婷⁴

(1. 东华大学分析测试中心, 上海201620; 2. 湖南人文科技学院材料与环境工程学院, 娄底417000; 3. 东华大学功能材料研究所, 上海201620; 4. 景德镇陶瓷大学, 景德镇333001)

收稿日期:2016-11-07 修回日期:2017-01-18 出版日期:2017-08-10 网络出版日期:2017-07-19
作者简介:王明辉(1973–), 女, 实验师. E-mail:wmh@dhu.edu.cn
基金资助:
国家自然科学基金(51432004);江西省科技计划项目(20151BBE50015)

Spark Plasma Sintering of Bioactive Ca₂MgSi₂O₇ Ceramics

WANG Ming-Hui¹, ZHONG Hong-Bin², FAN Yu-Chi³, CHEN Ting⁴

(1. Analysis and Testing Center, Donghua University, Shanghai 201620, China; 2. School of Materials and Environmental Engineering, Hunan University of Humanities Science and Technology, Loudi 417000, China; 3. Institute of Functional Materials, Donghua University, Shanghai 201620, China; 4. Jingdezhen Ceramic Institute, Jingdezhen 333001, China)

Received:2016-11-07 Revised:2017-01-18 Published:2017-08-10 Online:2017-07-19
About author:WANG Ming-Hui. E-mail:wmh@dhu.edu.cn
Supported by:
National Natural Science Foundation of China(51432004);Projects of Jiangxi Provincial Department of Science and Technology (20151BBE50015)

摘要/Abstract

摘要：

钙硅基生物陶瓷具有良好的生物活性和细胞相容性, 在生物医疗领域具有广阔的发展前景。但是其粉体烧结性能差的缺点导致很难获得致密的陶瓷材料, 阻碍了其应用的进程。本研究采用化学共沉淀法制备了纯度高且烧结活性好的镁黄长石粉体, 然后采用放电等离子烧结技术(SPS)制备了镁黄长石陶瓷材料。通过X射线衍射(XRD)和扫描电子显微镜(SEM)表征了样品的组成结构和显微形貌, 并通过阿基米德法和模拟体液浸泡法分析了镁黄长石陶瓷样品的致密度和生物活性。研究结果表明, 采用SPS技术在1170℃、70 MPa保温5 min条件下可获得致密度超过99%的镁黄长石陶瓷材料。在模拟体液中浸泡3 d, 陶瓷样品表面出现磷酸盐的沉积, 浸泡7 d后生成了类骨羟基磷灰石, 说明SPS技术制备的致密镁黄长石生物陶瓷具有良好的诱导沉积类骨磷灰石能力。

关键词: 镁黄长石, 放电等离子烧结, 生物活性

Abstract:

The bio-ceramics based on Ca and Si have wide development prospect in biomedical, which is attributed to their outstanding bioactivity and cytocompatibility. However, how to improve its sinterability is a key problem to be solved. In this study, pure Ca₂MgSi₂O₇ powders were prepared via a co-precipitation method, and then were sintering by spark plasma sintering (SPS) technique. The phase and the morphology of the resulting products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. The relative density and the bioactivity were also investigated by Archimedean method and simulated body fluid (SBF) soaking method, respectively. Experimental results showed that the Ca₂MgSi₂O₇ ceramics with density of about 99% could be achieved by spark plasma sintering at 1170℃ for 5 min under 70 MPa. After soaking in the simulated body fluid for 3 d, phosphate precipitation was observed on the surface of the ceramics, while bone-like hydroxyapatite was formed until 7 d soaking, indicating that the Ca₂MgSi₂O₇ ceramics prepared by SPS have good bioactivity to induce the sedimentation of bone-like hydroxyapatite.

Key words: akermanite, spark plasma sintering, bioactivity

中图分类号:

TB383
TQ028

王明辉, 钟洪彬, 范宇驰, 陈婷. SPS烧结制备生物活性镁黄长石陶瓷[J]. 无机材料学报, 2017, 32(8): 825-830.

WANG Ming-Hui, ZHONG Hong-Bin, FAN Yu-Chi, CHEN Ting. Spark Plasma Sintering of Bioactive Ca₂MgSi₂O₇ Ceramics[J]. Journal of Inorganic Materials, 2017, 32(8): 825-830.

图/表 7

图1 镁黄长石粉体和不同温度烧结得到陶瓷的XRD图谱

Fig. 1 XRD patterns for Ca2MgSi2O7 powder and ceramics sintered at different temperatures

图2 镁黄长石陶瓷的相对密度随烧结温度的变化曲线

Fig. 2 Relative density of Ca2MgSi2O7 ceramics as a function of sintering temperature

图3 不同温度烧结的镁黄长石陶瓷的断口形貌照片

Fig. 3 SEM images of the fracture surface of Ca2MgSi2O7 ceramics sintered at different temperatures(a) 950℃; (b) 1050℃; (c) 1100℃; (d) 1130℃; (e) 1170℃

图4 在模拟体液浸泡不同天数后镁黄长石陶瓷的XRD图谱

Fig. 4 XRD patterns of Ca2MgSi2O7 ceramics before and after soaking in SBF solution for various periods

图5 在模拟体液浸泡不同天数后镁黄长石陶瓷表面的傅里叶变换红外光谱

Fig. 5 FTIR spectra of Ca2MgSi2O7 ceramics soaked in SBF for various periods

图6 镁黄长石陶瓷在SBF中浸泡不同时间后表面微结构的SEM照片

Fig. 6 SEM images of Ca2MgSi2O7 ceramics soaked in SBF for various periods(a, e) 1 d; (b, f) 3 d; (c g) 7 d; (d, h) 14 d

图7 镁黄长石陶瓷在SBF中浸泡不同时间后溶液中离子浓度及pH的变化

Fig. 7 Changes of ion concentrations and pH of the SBF solution after soaking with Ca2MgSi2O7 ceramics for various periods

参考文献 16

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SPS烧结制备生物活性镁黄长石陶瓷

Spark Plasma Sintering of Bioactive Ca₂MgSi₂O₇ Ceramics

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SPS烧结制备生物活性镁黄长石陶瓷

Spark Plasma Sintering of Bioactive Ca2MgSi2O7 Ceramics

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Spark Plasma Sintering of Bioactive Ca₂MgSi₂O₇ Ceramics