This research is focused on the application of the Al2O3-phosphate ceramic coating on mild steel surface to protect mild steel from erosion in coal dust environment. Erosion resistance of mild steel could be improved by overlay it with SiC in the Al2O3-phosphate ceramic coating. As a filler, Al2O3 was mixed with 20%, 40%, and 60% SiC by using aluminium phosphate as a binder and heated at 220 °C for 5 hours. X-ray diffraction testing was conducted to observe the phase of Al2O3-SiC phosphate ceramic coating. Meanwhile, surface morphology and adhesion characteristic of Al2O3-SiC phosphate ceramic coating were analyzed by scanning electron microscope. To analyze the erosion resistance quantitatively solid particle impingement test by applying gas jets at the right angle (90°) against a sample surface has been conducted. The results showed that Al2O3-SiC phosphate ceramic coating is strongly bound to the mild steel surface without the presence of any void. The higher the SiC content can increase the ceramic coating density and its erosion resistance. The SiC 60% produces four times higher erosion resistance than uncoated mild steel. The material characterization of Al2O3-SiC phosphate ceramic coating proves that SiC gives a significant impact on the enhancement of erosion resistance of the Al2O3-SiC phosphate ceramic coating.
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机译：该研究专注于在温和钢结构上的应用在温和钢表面上的应用，保护轻度钢免受煤尘环境中的腐蚀。通过在Al 2 O 3-磷酸盐陶瓷涂层中用SiC覆盖SiC，可以改善温和钢的腐蚀性。作为填料，通过使用磷酸铝作为粘合剂将Al 2 O 3与20％，40％和60％的SiC混合，并在220℃下加热5小时。进行X射线衍射测试以观察Al2O3-SiC磷酸陶瓷涂层的相。同时，通过扫描电子显微镜分析了Al2O3-SiC磷酸盐陶瓷涂层的表面形态和粘附特性。为了分析通过在对样品表面施加直角（90°）的施加气体射流来分析定量固体颗粒冲击测试。结果表明，在不存在任何空隙的情况下，Al 2 O 3-SiC磷酸盐陶瓷涂层强烈地结合到温和的钢表面。 SiC含量越高，可以提高陶瓷涂层密度及其腐蚀性。 SiC 60％产生的侵蚀耐力比未涂层的低碳钢更高。 Al2O3-SiC磷酸盐陶瓷涂料的材料表征证明，SiC对增强Al2O3-SiC磷酸盐陶瓷涂层的抗腐蚀性产生显着影响。
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