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牙用纳米ZrO_2-白榴石复合烤瓷的制备及性能研究 被引量:3

PREPARATION AND PROPERTIES OF NANO-ZIRCONIA-LEUCITE COMPOSITE PORCELAIN
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摘要 以钾长石、碳酸钾和纳米氧化锆为主要原料,通过高温同相法,一次性合成了一种牙用白榴石-氧化锆复合烤瓷粉。利用X射线衍射仪和扫描电镜分析烤瓷材料的物相结构,利用万能试验机和热膨胀仪分别测试样品的弯曲强度和热膨胀系数。结果表明:纳米氧化锆的加入,既有利于烤瓷材料的弯曲强度的提高,又有助于调节烤瓷材料的热膨胀系数。当氧化锆的添加量为8%(质量分数),合成烤瓷粉的煅烧温度为1200℃.熔附温度为900℃时,样品的弯曲强度为112MPa,热膨胀系数为14.4×10^(-6)/K。 The dental zirconia-leucite composite porcelain powder was synthesized by the solid-state method using nano-zirconia and potassium carbonate as raw materials.X-ray diffraction and scanning electron microscopy were employed to characterize the phase structure of the porcelain material.The bending strength and the thermal expansion coefficient of the samples were measured by uni- versal testing machine and thermal expansion instrument,respectively.The results show that the addition of nano-zirconia is favorab...
出处 《硅酸盐学报》 EI CAS CSCD 北大核心 2009年第1期57-61,共5页 Journal of The Chinese Ceramic Society
基金 国家自然科学基金(10476024) 四川省教育厅项目(06zd1108)资助。
关键词 钾长石 氧化锆 白榴石 烤瓷粉 potash feldspar zirconia leucite porcelain powder
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