耐火与石灰 ›› 2023, Vol. 48 ›› Issue (5): 38-39.

• 综述 • 上一篇    下一篇

氧化铝微粉粒度对铝锆碳滑板性能的影响

  

  1. (唐山时创高温材料股份有限公司,唐山 063000)
  • 出版日期:2023-10-10 发布日期:2023-11-01

Effect of particle size of alumina micro-powder on performance of Al2O3-ZrO2-C slide gate plate

  1. (Tangshan Strong Refractories Co.,Ltd.,Tangshan 063000,China) 
  • Online:2023-10-10 Published:2023-11-01

摘要: 为了进一步改善铝锆碳材质的使用性能,以板状刚玉、锆莫来石为主要原料,酚醛树脂为结合剂,研究了 5 种不同的氧化铝微粉对铝锆碳滑板性能的影响;结果表明:1)随着氧化铝微粉粒度逐渐减小,试样的显气孔率增加, 体积密度随之减小 , 试样的常温力学性能降低;2)CL-370 因粒度分布为双峰,有效填充了气孔,最终导致试样 A4 的烧后体积密度和常温抗折强度大于试样 A3 的该值;3)随着氧化铝微粉粒度逐渐减小,试样的高温抗折强度变大, 热震稳定性变小。

关键词: 铝锆碳滑板, 氧化铝微粉, 强度, 热震稳定性

Abstract: In order to further improve the performance of Al2O3-ZrO2-C materials,the effect of five different alumina micro-powders on the performance of Al2O3-ZrO2-C slide gate plates are studied with tabular corundum and zirconia-mullite as the main raw materials and phenolic resin as the binder. The results show that:1)With the particle size of alumina micro-powder decreasing gradually, the apparent porosity of the sample increases,the bulk density decreases,and the mechanical properties of the sample at room temperature decrease;2)CL-370 effectively fills the pores due to its bimodal particle size distribution, resulting in a higher bulk density after burning and flexural strength at room temperature of sample A4 than those of sample A3;3)As the particle size of alumina micro-powder gradually reduces,the high temperature flexural strength of the sample increases while the thermal shock resistance decreases.

Key words: Al2O3-ZrO2-C slide gate plate, Alumina micro-powder, Strength, Thermal shock resistance 

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