| ZrO2包覆CaO-MgO-SiO2陶瓷纤维的制备及其性能 |
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| 引用本文： | 刘浩,王玺堂,王周福,张保国. ZrO2包覆CaO-MgO-SiO2陶瓷纤维的制备及其性能[J]. 耐火材料, 2012, 46(2): 87-89 |
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| 作者姓名： | 刘浩 王玺堂 王周福 张保国 |
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| 作者单位： | 武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地 湖北武汉430081 |
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| 基金项目： | 国家自然科学基金资助项目(51004080);耐火材料与高温陶瓷国家重点实验室培育基地开放基金(G201004) |
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| 摘 要： | 为了解决CaO-MgO-SiO2陶瓷纤维在使用过程中析晶、粉化的问题,采用非均相成核法在CaO-MgO-SiO2陶瓷纤维表面制备了ZrO2涂层。用场发射扫描电子显微镜观察ZrO2包覆层,用X射线衍射仪分析800和1 000℃热处理后原始纤维和ZrO2包覆纤维的晶相变化,并检测了二者在模拟肺液中的溶解性能。结果表明:包覆处理后,CaO-MgO-SiO2陶瓷纤维表面形成了一层ZrO2包覆层;ZrO2包覆层的存在可以显著抑制800℃时纤维的析晶,1 000℃时只能抑制纤维中方石英的析出,对其他物相的析晶没有明显抑制作用;ZrO2包覆层的存在降低了纤维在模拟肺液中的早期溶解速率,但对纤维的长期生物可溶性影响不大。
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| 关 键 词： | CaO-MgO-SiO2陶瓷纤维 ZrO2涂层 析晶 生物可溶性 |
Preparation and properties of ZrO2 coated CaO-MgO-SiO2 ceramic fiber |
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| Liu Hao , Wang Xitang , Wang Zhoufu , Zhang Baoguo. Preparation and properties of ZrO2 coated CaO-MgO-SiO2 ceramic fiber[J]. Refractories, 2012, 46(2): 87-89 |
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| Authors: | Liu Hao Wang Xitang Wang Zhoufu Zhang Baoguo |
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| Affiliation: | // The Key State Laboratory Breeding Base of Refractories and Ceramics,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China |
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| Abstract: | In order to inhibit the crystallization and pulverization of CaO-MgO-SiO2 ceramic fiber at high temperatures,the ZrO2 coating on CaO-MgO-SiO2 ceramic fiber was formed by heterogeneous-nucleation method.The crystal phase compositions of the original fiber and ZrO2 coated fiber fired at 800 ℃ and 1 000 ℃ were analyzed by X-ray diffractometer,and their solubility in Gamble solution was determined.The results show that:(1)a dense ZrO2 coating is formed on the surface of fiber;(2)the coating on fiber can inhibit the precipitation of crystals at 800 ℃ markedly and at 1 000 ℃ it only can inhibit the precipitation of cristobalite and has little effects on other crystal phases;(3)the coating decreases the initial dissolution rate of the fiber in Gamble solution and has little effect on long-term bio-solubility of fiber. |
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| Keywords: | calcia-magnesia-silica ceramic fiber zirconia coating crystallization bio-solubility |
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