白榴石

目的探讨K2O（氧化钾）在白榴石微晶化增强牙科玻璃陶瓷的原材料组分与比例方面的规律以及白榴石微晶含量对该玻璃陶瓷抗压强度的影响。

Objective To research the influence of K 2O composition in the raw material on leucite microcrystallization and to study the effect of leucite content on compressive strength of the dental glass ceramics reinforced by leucite microcrystallization .

长石是一种中档宝石。钾长石在白榴石合成中的应用

Feldspar is of middle-class gemstone . Application of Feldspar in Synthesis of Leucite

样本烧结后经X射线衍射图谱分析和扫描电镜观察，提示致密的玻璃基质中析出了四方相的白榴石晶体，晶体粒径约1～3μm。

According to the analysis of XRD and SEM , it generated tetragonal leucite crystals of the glass matrix . The diameter of tetragonal leucite crystals was about 1 ~ 3 um in measured .

结论K2O在原材料中的配比对白榴石微晶化及其增强的牙科玻璃陶瓷的显微结构和相关性能有较大影响。白榴石微晶含量对该玻璃陶瓷的抗压强度有明显影响。

Conclusions The component of K 2O has a great effect on the microstructure and the properties of the leucite microcrystal reinforced dental glass ceramics and the content of leucite microcrystals has a notable influence on the compressive strength of the dental glass ceramics .

氧化锆对白榴石基烤瓷粉性能的影响

Effects of Zirconia on the Properties of Leucite-based Porcelain Powder

白榴石一种白色或灰色的钾铝硅酸盐矿物。

A white or gray mineral of potassium aluminum silicate , KAlSi2O6 .

钾长石在白榴石合成中的应用凤城的富白榴石岩

Application of Feldspar in Synthesis of Leucite LEUCITE - RICH ROCK IN FENGCHENG

白榴石增强的牙科玻璃陶瓷的研究

Study on the Leucite Reinforced Dental Glass Ceramics

微晶化后的白榴石晶粒约08μm，在玻璃基质中分布均匀。

Leucite microcrystals dispersed in the glass matrix evenly and the size of leucite particle was about 0.8 μ m.

火山岩主要岩石类型为粗安岩，少量粗面岩、玄武粗安岩、白榴石玄武粗安岩；

The main rock type of the volcanic rock is trachyandesite with small amounts of trachyte , basaltic-trachyandesite and leucite basaltic-trachyandesite .

本区富钾火山岩中浅色矿物有碱性长石、白榴石和霞石。

The light - colored minerals of K - rich volcanic rocks in this area are alkaline feldspar , leucite and nepheline .

可作钾矿资源的含钾矿物有：钾长石、明矾石、伊利石、白榴石、海绿石等。

The potasium bearing minerals , that can be considered as potasium mineral resources include : potash feldspar , alunite , illite , leucite , glauconite etc.

长石瓷有一最佳的烧结温度范围，在此范围内，适当延长保温时间（5小时）有利提高长石瓷中白榴石的含量。

In the most appropriate range of sintering temperature for feldspathic ceramics , sintering time should be prolonged appropriately ( 5 hours ) to increase the content of leucite crystals .

而白榴石碧玄岩-响岩系列和钾玄岩系列来自与古俯冲有关的古老富集地幔，为岩浆分离结晶作用的产物。

However , the leucite basanite - phonolite series and shoshonite series were evolved from an old enriched mantle related to ancient subduction , and their geneses are attributed to the fractional crystallization in different degrees .

阐述了作为牙科陶瓷材料增强体的白榴石的主要物理性质、制备工艺，探讨了它对牙科瓷各项性能的影响，并详细地分析了其增强机理。

This paper describes the main physical property , preparation process of leucite as the strengthening body in the dental ceramic material , analyzes its impact on some performance of the dental porcelain and investigates its reinforcing mechanism .

但以白榴石为增强的热压铸造陶瓷在临床应用受其强度的限制，因此现今的研究任务将主要放在通过不同方法以提高其强度而扩大其在临床的应用范围。

But the possible applications for heat-pressing glass ceramic is limited by the limited strength and fracture toughness , the objective of currently study is to increase the flexural strength , reliability and to satisfy the clinical demands .

凤城的富白榴石岩②白榴石碧玄岩-响岩系列；

LEUCITE - RICH ROCK IN FENGCHENG ② leucitite basanite - phonolite series ;