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公开(公告)号：US20210371672A1
公开(公告)日：2021-12-02
申请号：US17054773
申请日：2019-05-12
申请人： Zhejiang University
发明人： Dongming Yan , Yi Liu , Zhihao Huang
摘要： The invention discloses a two-layered dense metal anticorrosive coating formed by low temperature sintering with an outer layer of an inorganic ceramic coating and an inner layer of a base oxide coating. The raw materials comprise the following components by weight: 50-60 weight percent silicone compound, 20-35 weight percent thermal expansion coefficient adjuster, 3-7 weight percent binder, 5-10 weight percent adhesion adjuster, and 1-4 weight percent catalyst. A preparation process for the two-layered dense metal anticorrosive coating formed by low-temperature sintering comprises the following steps: 1) grinding, 2) wet mixing, 3) drying, 4) grinding, 5) coating, 6) sintering. The coating of this invention has high adhesion, outstanding anti-corrosion resistance, and good durability.
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公开(公告)号：US20210188699A1
公开(公告)日：2021-06-24
申请号：US17054177
申请日：2019-11-05
申请人： Zhejiang University
发明人： Dongming Yan , Yi Liu , Zhihao Huang
摘要： The invention discloses a metal anticorrosive coating. The coating is an inorganic coating used for metal anticorrosion. This coating has a double-layer structure, including an outer enamel coating and an inner base oxide coating. Meanwhile, the content of the base metal oxide decreases from the inner layer to the outer layer, which causes the thermal expansion coefficient of the coating to increase from the inner layer to the outer layer, ensures that the overall thermal expansion coefficient of the coating is coordinate with various base metals. The composition of the outer layer enamel coating includes: by weight, 1-40 parts of silicon, 1-30 parts of sodium, 1-20 parts of potassium, 2-20 parts of calcium, 0.5-15 parts of fluorine, 0.3-10 parts of cobalt, 0.2-10 parts of nickel, 1-18 parts of boron, 0.5-10 parts of phosphorus, 0.1-8 parts of magnesium, and the rest is oxygen; the composition of the base oxide coating of the inner layer includes the base metal and oxygen. A preparation process of a double-layer dense metal anticorrosive coating formed by low-temperature sintering is also disclosed, including the following steps: 1) grinding; 2) preparation of mixture; 3) grinding; 4) high temperature reaction; 5) grinding; 6) coating; 7) sintering. The coating of the invention has the advantages of improving the corrosion resistance by more than 14 times, has a high ductility which can be coordinated with the reinforcing steel bar in tensile deformation, has a thermal expansion coefficient gradient which can be applied to different metals and different types of the same metal.
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