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Author(s): |
Li Wei, Faculty of Materials science and Engineering, Shenyang Ligong University,Shenyang 110159,China
Yu Sun, Faculty of Materials science and Engineering, Shenyang Ligong University,Shenyang 110159,China |
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Abstract: |
Inorganic fireproof coating was prepared on the Al alloy plane for main component using inorganic binding agent with adding appropriate inorganic sol and agent. The component of inorganic fireproof paint and the microstructure of interface between coating and base Al alloy was studied, sometime, acidstability, alkalistability and non-combusbility of ceramic coating was tested. The results show that if acid aluminum phosphate is adopted as main inorganic sol component, when the amount of the adhesive agent is 60% and the granularity of the additive is 1~2μm, the surface of the coating is homogeneous, dense and no shrinking holes. A new phase is generated on the interface between coating and base materials, and diffusing mutually and form transition layer. Thus, the bondstrength between coating and base materials is development. The ceramic coating could resistant acid about 14 hours, and resistant alkali 24 hours. The prepared ceramic coating achieves the above standards of finising fire retardant paint (the national standard of China, GB12441–2005). The fireproof of the coating can last for over 30 min without combustion, scaling off, smoke and harmful gas and the coating materials possess good properties of fire proof and flaming retard.
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