金属材料热喷涂玻璃涂层的研究

Development of Thermally Sprayed Glass Coating for Surface Protection of Metal Material

金属材料表面的玻璃涂层具有较好的抗冲击强度和耐磨性能,过去对此研究较少。为此,采用氧乙炔火焰热喷涂方法,研制了一种适用于低碳钢表面保护涂层的玻璃材料。优化设计的玻璃材料质量分数为:60.0%SiO2,12.5%B2O3,8.5%Li2O,7.5%Na2O,2.0%CaO,3.0%SrO;6.5%余物(ZnO,MgO,Ti2O,ZrO2,SnO,BaO,Al2O3)。结果表明,这种玻璃材料具有优良的化学稳定性和热稳定性,在金属材料防腐蚀方面应用前景广阔。

Metal materials are usually liable to corrosion in soil and various liquids such as seawater, acid, alkali, and salt. This is why it is imperative to use various metallic and non-metallic coatings to protect the metal surface from corrosion. Thus a glass material was prepared by oxygen-acetylene flame hot spraying process and used as the surface protection coating of a mild steel.The effectiveness of the resulting glass material in increasing the corrosion resistance of the steel was investigated.It was found that the glass material had excellent chemical stability and thermal stability and could be used to greatly increase the corrosion resistance of steel.The optimum composition(mass fraction) of the glass material was suggested to be 60.0%SiO_ 2,12.5%B_ 2O_ 3,8.5%Li_ 2O,7.5%Na_ 2O,2.0%CaO,3.0%SrO,and 6.5%residual ceramics (ZnO,MgO,TiO_ 2,ZrO_ 2,SnO_ 2,BaO,Al_ 2O_ 3).