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›› 2010, Vol. 10 ›› Issue (1): 167-172.

• 材料工程专栏 • Previous Articles     Next Articles

Preparation and Characterization of High Temperature Protective Ceramic Coating for Plain Carbon Steel

ZHOU Xun Lianqi Wei LIU Peng WANG Xiao-jing YE Shu-feng CHEN Yun-fa   

  1. State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences
  • Received:2009-07-29 Revised:2009-11-13 Online:2010-02-20 Published:2010-02-20
  • Contact: ZHOU Xun

普碳钢用陶瓷基高温防护涂层制备及其性能表征

周旬 魏连启 刘朋 王晓婧 叶树峰 陈运法   

  1. 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所 中国科学院过程工程研究所
  • 通讯作者: 周旬

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Abstract: A new high temperature protective ceramic coating used on the surface of plain steel was prepared by mechanical mixing method. The coating was consisted of magnesia, titania, alumina and calcium oxide mixture. Such a coating, when it was applied superficially on Q235B plain steel surface, could form a compact scale and enhance oxidation resistance at 1300℃. The experimental result showed that the granularity between 48~75 mm and coating layer thickness of 0.5 mm were needed to observe the coating performance. The coating could work effectively in the temperature range of 900~1300℃. Metal loss was diminished by 59.36% compared with the uncoated sample at 1300℃. Duration of the coating could last over 8 h. The ceramic coating converted the scale structure from classic Fe2O3/Fe3O4/FeO three layers to one spinel layer, suppressed the growth of iron oxides and decreased Fe diffusion speed sharply at elevated temperature.

Key words: ceramic coating, Q235B steel, high temperature protection

摘要： 采用机械混合法制备了一种针对碳钢的新型Al2O3-MgO-TiO2-CaO体系陶瓷基高温防护涂料，1300℃下可在Q235B钢表面形成致密保护层，提高钢抗氧化烧损性能. 结果表明，在涂料粒度48~75 mm、涂层厚度0.5 mm的条件下，涂层防护性能优良. 涂层的防护温度范围为900~1300℃，1300℃时比原样可降低氧化烧损59.36%，防护寿命长于8 h. 涂层的应用将氧化层由经典的Fe2O3/Fe3O4/FeO三层结构转变为一层尖晶石结构，同时减薄了氧化层厚度，显著降低了Fe元素的高温扩散速率.

关键词: 陶瓷涂层, Q235B钢, 高温防护

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