| 锆刚玉加入对刚玉-尖晶石浇注料性能的影响 |
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| 引用本文： | 薛军柱,李亚伟,王庆虎,桑绍柏.锆刚玉加入对刚玉-尖晶石浇注料性能的影响[J].耐火材料,2011,45(5). |
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| 作者姓名： | 薛军柱 李亚伟 王庆虎 桑绍柏 |
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| 作者单位： | 1. 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;浙江自立股份有限公司 浙江上虞312300
2. 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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| 摘 要： | 在刚玉-尖晶石浇注料的配比组成中分别加入ZrO2质量分数为28.46%和38.47%的两种电熔锆刚玉颗粒,研究了电熔锆刚玉颗粒的粒度(5～3、3～1和1～0.5 mm)、加入量(质量分数分别为3%、5%和8%)对刚玉-尖晶石浇注料的加热永久线变化率、烧后常温抗折强度、高温抗折强度及热震后弹性模量的影响,并观察了试样的显微结构。结果表明:1)试样的加热永久线变化率随锆刚玉粒度的增大而增大,随锆刚玉加入量的增多而增大,引入锆刚玉Z40的试样的加热永久线变化率基本上比引入锆刚玉Z25的大;2)烧后试样的常温抗折强度、高温抗折强度和弹性模量均以空白试样的为最大,均随锆刚玉粒度的减小而增大,随锆刚玉加入量的增多而减小;3)在刚玉尖晶石浇注料中适当加入锆刚玉而产生微裂纹,尽管降低了材料的强度和弹性模量,但对提高抗热震性有一定的积极作用。
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| 关 键 词： | 电熔锆刚玉 尖晶石 浇注料 抗热震性 裂纹 |
Effect of fused zirconia corundum on properties of corundum-spinel castables |
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| Xue Junzhu,Li Yawei,Wang Qinghu,et al The Key State Breeding Base of Refractories , Ceramics,Wuhan University of Science , Technology,Wuhan ,Hubei,China.Effect of fused zirconia corundum on properties of corundum-spinel castables[J].Refractories,2011,45(5). |
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| Authors: | Xue Junzhu Li Yawei Wang Qinghu The Key State Breeding Base of Refractories Ceramics Wuhan University of Science Technology Wuhan Hubei China |
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| Affiliation: | Xue Junzhu,Li Yawei,Wang Qinghu,et al The Key State Breeding Base of Refractories and Ceramics,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China |
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| Abstract: | Two kinds of fused zirconia corundum particles with ZrO2 contents of 28.46% and 38.47% were added into corundum-spinel castables to study the effects of grain size(5-3,3-1 and 1-0.5 mm) and addition(3%,5%,and 8%) on the permanent linear change,cold/hot modulus of rupture,and elastic modulus after thermal shock of the castables.The microstructure was observed as well.The results show that:(1)permanent linear change increases with the increase of the fused zirconia corundum grain size or the increase of fused... |
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| Keywords: | Fused zirconia corundum Spinel Castables Thermal shock resistance Crack |
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