采用不同矿物原料在不同煅烧温度(1100~1400℃)下原位合成制备了钙长石-莫来石复相材料，通过物相组成和显微结构分析研究了原料矿物组成对复相材料物相形成过程的影响。结果表明：采用石英(熔融石英或天然石英)、Ca(OH)2和α-Al2 O3为原料时，合成过程中首先生成硅灰石和钙黄长石，之后硅灰石再与刚玉和石英反应生成钙长石，莫来石则是在1350℃由方石英和刚玉反应生成；而以硅灰石或铝酸钙，蓝晶石和苏州土天然铝硅系矿物为原料时，部分钙长石相由原料直接反应生成，莫来石通过二次莫来石化生成；1400℃煅烧后不同原料合成的钙长石-莫来石试样中均含有莫来石相、钙长石相和少量刚玉相，尺寸较大的莫来石柱状晶体穿插在较细的钙长石晶粒之中。
The anorthite-mullite composite materials were in-situ synthesized by using different mineral materials at different sintering temperatures (1 100-1 400 ℃).The effects of mineral composition on the phase formation process of the composite materials were studied by the phase composition and microstructure analysis. The results show that with the quartz (fused quartz or quartz sand),Ca(OH)2 andα-Al2 O3 as the raw materials, the wollastonite and gehlenites were firstly formed,and then the anorthites were produced by the reaction of wollastonite,corundum and quartz.The mullites were obtained by the reaction of corundum and cristobalite at 1 350 ℃.With the wollastonites or grossites,natural Al-Si minerals like kyanites and clays as raw materials,the anorthites were directly produced by the raw materials and mullites were obtained by the secondary mullitization. After sintered at 1 400 ℃,the anorthite-mullite samples prepared with different raw materials all consisted of mullite,anorthite and few corundum phases.The columnar mullite crystals with large sizes existed in the fine anorthite grains.
参考文献
| [1] | 徐慧铭;黄朝晖;刘艳改;房明浩;车聪.用石英、石灰石和γ-氧化铝合成钙长石的研究[J].中国非金属矿工业导刊,2012(3):7-8,20. |
| [2] | Xiaosu Cheng;Shanjun Ke;Qianghong Wang.Fabrication and characterization of anorthite-based ceramic using mineral raw materials[J].CERAMICS INTERNATIONAL,20124(4):3227-3235. |
| [3] | 王传运;张亚忠;周宁生;夏熠.煅烧温度对微孔钙长石轻质料性能的影响[J].耐火材料,2015(2):106-109. |
| [4] | 陈冬;陈南春.莫来石的研究进展[J].矿产与地质,2004(1):52-54. |
| [5] | 周健儿;赵世凯;汪永清;王德林.针状莫来石材料的应用研究进展[J].陶瓷学报,2009(3):388-391. |
| [6] | 包启富;董伟霞;顾幸勇;胡克艳;周秀华.原位生长莫来石增强钙长石复合材料的制备[J].硅酸盐通报,2012(4):809-812. |
| [7] | 黄朝晖;黄赛芳;冷先锋;孙浩然;房明浩;刘艳改.钙长石/莫来石复相耐高温材料的物相设计[J].稀有金属材料与工程,2009(z2):1252-1254. |
| [8] | Li, Ye;Cheng, Xudong;Gong, Lunlun;Feng, Junjie;Cao, Wei;Zhang, Ruifang;Zhang, Heping.Fabrication and characterization of anorthite foam ceramics having low thermal conductivity[J].Journal of the European Ceramic Society,20151(1):267-275. |
| [9] | Shanjun Ke;Xiaosu Cheng;Yanmin Wang.Dolomite, wollastonite and calcite as different CaO sources in anorthite-based porcelain[J].CERAMICS INTERNATIONAL,20135(5):4953-4960. |
| [10] | Yao Han;Cuiwei Li;Chao Bian.Porous anorthite ceramics with ultra-low thermal conductivity[J].Journal of the European Ceramic Society,201313/14(13/14):2573-2578. |
| [11] | 胡建辉 .新型钙长石/莫来石复相轻质耐高温材料的制备及性能研究[D].中国地质大学(北京),2010. |
| [12] | 李保卫;杜永胜;张雪峰;贾晓林;赵鸣;陈华;邓磊波.钙铝质量比对矿渣微晶玻璃结构及性能的影响[J].机械工程材料,2012(11):46-49. |
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