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›› 2011, Vol. 11 ›› Issue (5): 863-868.

• 材料工程专栏 • Previous Articles     Next Articles

Preparation and Modification of Low Melting Glass as High Temperature Oxidation-resistant Coatings Binder for Steel Ingots

WANG Shu-hua Lianqi Wei ZHANG Xiao-meng ZHOU Xun YE Shu-feng CHEN Yun-fa   

  1. Key Lab. Multi-phase 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 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
  • Received:2011-07-06 Revised:2011-08-24 Online:2011-10-20 Published:2011-10-20
  • Contact: WANG Shu-hua

高温钢坯防氧化涂料用易熔玻璃粘结剂的制备及改性

王书华 魏连启 仉小猛 周旬 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 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: 王书华

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Abstract: The low melting glass used as a binder for high-temperature plain carbon steel was synthesized by P2O5, ZnO, and Na2O, then modified with B2O3, Fe2O3, MnO, CoO, and NiO. The results of DTA and XRD showed that the low-melting glasses could be changed to glass-ceramic with heat treatment. Zinc phosphate was precipitated from the A glass which modified with B2O3 and Fe2O3 after the heat treatment, while nickel phosphate was precipitated from the glass C which modified with B2O3, Fe2O3, MnO, CoO and NiO. The softening temperature of the glass A was 750℃, and 596℃ for glass C, while the glass-ceramic C was increased by 54℃. Softening temperature is an important factor to affect the adhesion property of the low-melting glasses. The modified glass could be used as a binder, which provided a good adhesion for coatings on high temperature steel substrate, and effect of oxidation resistance was 59.24% in the experiment. The reaction mechanism between the coating, glass binder and the iron oxides was also elaborated.

Key words: high-temperature binder, low-melting glass, glass-ceramic, anti-oxidation coating

摘要： 为使防氧化涂料在高温普碳钢坯上粘附，熔制了P2O5-ZnO-Na2O系基础玻璃，用B2O3, Fe2O3, MnO, CoO, NiO进行改性并对其性能进行了表征. 结果表明，粘结剂在升温过程中有晶相析出，用B2O3和Fe2O3改性后其软化温度为750℃，继续用MnO, CoO, NiO改性其软化温度为596℃；热处理前粘结剂为无定型玻璃态，用B2O3和Fe2O3改性后于476℃保温10 min，主要有Zn(PO3)2晶体析出，用B2O3, Fe2O3, MnO, CoO, NiO改性后于428℃保温10 min，主要有Ni(PO3)2析出；晶相析出后，玻璃的软化温度提高54℃. 将不同易熔玻璃作为高温粘结剂，软化温度是决定高温瞬间粘附性能的重要因素. 粘结剂加入涂料中，实现了涂料在高温钢坯上瞬间粘附，实验室防氧化效果为59.24%，简要分析了涂料和玻璃粘结剂的结合机理.

关键词: 高温粘结剂, 易熔玻璃, 微晶玻璃, 钢坯防氧化涂料

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