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题名	玻璃渗透氧化铝核瓷及其表面饰瓷材料的研究
作者	张丹
学位类别	硕士
答辩日期	2009-05-30
授予单位	中国科学院过程工程研究所
授予地点	过程工程研究所
导师	朱庆山
关键词	玻璃渗透氧化铝 白榴石 微晶玻璃 颜色 牙科材料
其他题名	Study on Glass-Infiltrated Alumina Core Material and Corresponding Veneer Material
学位专业	化学工程
中文摘要	玻璃渗透陶瓷有着传统切削陶瓷与铸造陶瓷不具备的优异力学性能，有着金属烤瓷不具备的美观性和生物相容性，近年来逐步走向市场。其中玻璃渗透氧化铝修复体制作工艺简单，并具备良好的“净成型”能力，已获得了广泛应用。本课题在课题组已有的玻璃渗透氧化铝核瓷材料的基础上，对其颜色进行了丰富与发展，并进一步开发了热膨胀系数、颜色与之相匹配的白榴石微晶玻璃饰瓷材料，组成了全瓷修复体系。该研究对于丰富国内牙科修复材料品种、建立国内牙科修复材料市场有着重要的意义。 首先，在课题组已有的玻璃渗透氧化铝技术的基础上，对玻璃配方进行了改进，适当调整了氧化物含量，特别是CaO的含量，使得玻璃渗透速率得到了提高，30min渗透距离可以达到3mm。同时，通过对多孔坯体结构的优化，使材料的力学性能得到了改善，弯曲强度达到了300MPa。在此基础上，采用CeO2、Fe2O3、Er2O3 3种金属氧化物着色剂对渗透玻璃进行着色，制备出了不同颜色的氧化铝-玻璃复合材料。在着色剂对氧化铝-玻璃复合材料颜色影响规律的基础上，对大量实验数据进行拟合得到配色模型，用于指导玻璃渗透氧化铝复合材料的配色。 其次，研究开发了适用于玻璃渗透氧化铝核瓷材料的白榴石微晶玻璃饰瓷材料。根据SiO2-Al2O3-K2O三元体系设计了4种玻璃配方，分别熔融制得玻璃，利用热膨胀曲线与差热曲线确定了热处理温度制度，结晶热处理后对各自的性能进行了研究。结果表明，随着K2O含量增加，玻璃的热膨胀系数增大，玻璃结晶热处理后析出的白榴石晶体的含量增大。随着微晶玻璃中白榴石晶体的含量增加，其力学性能和化学稳定性都得到增强。 实验制备的G2玻璃的热膨胀系数为7.6×10-6/K，析晶后的微晶玻璃P2热膨胀系数为8.2×10-6/K，略大于玻璃渗透氧化铝的热膨胀系数7.9×10-6/K，二者的热膨胀系数匹配。G3和G4析晶后的微晶玻璃P3和P4的热膨系数分别为9.2×10-6/K和10.6×10-6/K，可分别作为玻璃渗透氧化锆的表面饰瓷和金属烤瓷。它们的力学强度和化学稳定性均达到了国际标准的要求，可以作为牙科修复材料使用。 最后，针对实验开发的P2微晶玻璃，采用锆镨黄、锆铁红对其进行着色。研究了着色剂对微晶玻璃颜色影响的规律，并参考Vita 3D-Master比色板，开发出了一系列颜色的微晶玻璃瓷粉，能够与玻璃渗透氧化铝核瓷材料的颜色进行匹配。至此开发出了玻璃渗透氧化铝与白榴石微晶玻璃全瓷修复体系。
英文摘要	Recently, glass-infiltrated ceramics have become more and more popular in dental restoration field because of its good mechanical properties comparing to traditional castable and hot-pressed ceramics and its good aesthetic properties and biocompatibility comparing to porcelain-fused-to-metal materials. Among them the glass-infiltrated alumina has been widely used due to its simplicity in fabrication and net-shaping capability. The purpose of the present study is to develop color systems and veneer materials for our previously developed glass-infiltrated alumina, to develop our own all-ceramic dental restoration system. First of all, the concentration of oxides especially the CaO concentration was adjusted to reduce the infiltrating time. A 3mm infiltration distance can be achieved in 30min. The mechanical properties were enhanced by means of optimizing the pore structure of porous alumina skeletons, which achieved 300MPa of flexible strength. CeO2, Fe2O3 and Er2O3 were used as colorants in alumina infiltration glass system. The color-matching model was established by fitting experimental data to instruct the Then leucite reinforced glass-ceramics were developed. Four kinds of glass composites were designed according to leucite phase formation region in the SiO2-Al2O3-K2O phase diagram. The oxides mixtures were molten to form glasses and then analyzed by thermal dilatometer and DTA to determine the heat-treatment temperature schedules. Experimental results showed that the coefficient of thermal expansion (CTE) of glasses and the leucite content in glass-ceramics increased with increasing K2O concentration. The CTE of sample P2 was 8.2×10-6/K, slightly greater than that of the glass-infiltrated alumina (7.9×10-6/K), which is within the matching limit (0.5×10-6/K). The CTEs of P3 and P4 were 9.2×10-6/K and 10.6×10-6/K, respectively, which could be used as veneer materials for glass-infiltrated zirconia all-ceramic system and porcelain-fused-to-metal system. At last, the zirconia-praseodymium and iron-zirconia pigments were used to color P2. The effects of pigments on the color of P2 were investigated. Taking Vita 3D-Master color tabs as reference, a series of colored glass-ceramics were developed, which matched the color of the glass-infiltrated alumina core material.
语种	中文
公开日期	2013-09-16
页码	81
内容类型	学位论文
源URL	[http://ir.ipe.ac.cn/handle/122111/1279]
专题	过程工程研究所_研究所（批量导入）
推荐引用方式 GB/T 7714	张丹. 玻璃渗透氧化铝核瓷及其表面饰瓷材料的研究[D]. 过程工程研究所. 中国科学院过程工程研究所. 2009.

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