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| 纳米Al_2O_3和Cr_2O_3对镁铬材料烧结与力学性能的影响 | |
| 引用本文： | 黄少波,蒋明学,章道运. 纳米Al_2O_3和Cr_2O_3对镁铬材料烧结与力学性能的影响[J]. 耐火材料, 2011, 45(4) |
| 作者姓名： | 黄少波 蒋明学 章道运 |
| 作者单位： | 1. 西安建筑科技大学材料与科学工程学院 陕西西安710055 2. 西安建筑科技大学材料与科学工程学院 陕西西安710055;中钢集团耐火材料有限公司 河南洛阳471039 |
| 摘 要： | 利用纳米粉的粒径小及活性高等特性,在镁铬材料中加入不同质量分数(分别为2%、4%、6%)的纳米A l2O3或纳米Cr2O3粉体,研究了这两种纳米粉取代相应的微粉后对不同温度烧成的镁铬耐火材料烧结与力学性能的影响。结果表明:适量地用纳米粉体取代相应微粉可有效改善镁铬材料的烧结,提高其常温与高温力学性能,且烧成温度越低,纳米粉对镁铬材料性能的提高作用越明显;在本试验的镁铬材料的颗粒级配条件下,两种纳米粉的加入质量分数均以4%为最佳;纳米A l2O3的加入能降低镁铬质耐火材料的烧结温度,加入4%质量分数的纳米A l2O3可降低约100℃。 |
| 关 键 词： | 纳米Al2O3 纳米Cr2O3 镁铬质耐火材料 烧结性能 力学性能 |
Influences of nano-Al_2O_3 and nano-Cr_2O_3 on sintering and mechanical properties of magnesia-chrome refractories |
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| Huang Shaobo,Jiang Mingxue,Zhang Daoyun. Influences of nano-Al_2O_3 and nano-Cr_2O_3 on sintering and mechanical properties of magnesia-chrome refractories[J]. Refractories, 2011, 45(4) | |
| Authors: | Huang Shaobo Jiang Mingxue Zhang Daoyun |
| Affiliation: | Huang Shaobo,Jiang Mingxue,Zhang Daoyun School of Materials Science and Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,Shaanxi,China |
| Abstract: | Different amounts(0,2%,4%,and 6%) of nano-Al2O3 or nano-Cr2O3 powders were added to the magnesia-chrome refractories to replace the same amount of micro-Al2O3 or micro-Cr2O3 powders,respectively.The influences of the replacement on sintering and mechanical properties of magnesia-chrome refractories fired at different temperatures were studied.It is found that:(1)adding an appropriate amount of nano-powder can accelerate the sintering and improve mechanical properties of magnesia-chrome refractories at both ... |
| Keywords: | Nano-alumina Nano-chrome oxide Magnesia-chrome refractories Sintering property Mechanical properties |
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