耐火与石灰 ›› 2020, Vol. 45 ›› Issue (5): 14-17.

• 综述 • 上一篇    下一篇

添加过渡金属对低碳MgO-C耐材性能的影响

卢咏明  陈海山  张小红  程峰  崔任渠   

  1. 瑞泰马钢新材料科技有限公司, 马鞍山243000
  • 出版日期:2020-10-10 发布日期:2020-10-16

Effect of transition metal addition on properties of low carbon MgO-C refractories

Lu Yongming  Chen Haishan  Zhang Xiaohong  Cheng Feng  Cui Renqu   

  1. Ruitai Masteel New Material Technology Co.,Ltd., Ma’anshan 243000, China
  • Online:2020-10-10 Published:2020-10-16

摘要:

研究了添加过渡金属Fe粉、Ni粉对低碳MgO-C耐材在不同热处理温度下的显微结构影响。结果表明:添加Fe粉和Ni粉有利于促进无定形炭向结晶碳转变,且热处理温度的提高有利于结晶碳和尖晶石的生成。当热处理温度高于1 200 ℃时,试样中生成了碳纳米管和高温陶瓷相MgAl2O4晶须,有助于提高低碳MgO-C耐材的力学性能和热震稳定性。

关键词: 低碳MgO-C耐材, 碳纳米管, 晶须, 过渡金属, 力学性能, 热震稳定性

Abstract:

The effects of transition metal Fe powder and Ni powder on the microstructure of low carbon MgO-C refractories at different heat treatment temperatures were studied.The results showed that the addition of Fe powder and Ni powder is beneficial to the transition from amorphous carbon to crystalline carbon,and the increase of heat treatment temperature is beneficial to the formation of crystalline carbon and spinel. Carbon nanotubes and high temperature ceramic MgAl2O4 whisker were obtained when the heat treatment temperature was higher than 1 200 ℃,which is helpful to improve the mechanical properties and thermal shock resistance of low carbon MgO-C refractories.

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