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Metallic nickel ceramic coating with excellent thermal shock resistance and manufacturing method thereof

A technology of ceramic coating and production method, which is applied in the direction of heating inorganic powder coating, etc., can solve the problems of unfavorable energy-saving and green development, low toughness, single function, etc., and achieve enhanced atomic orbital interaction, excellent thermal shock resistance, and preparation The effect of simple process

Inactive Publication Date: 2015-11-11
BENGBU TRIUMPH ENG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cermet coating prepared in the prior art has many defects such as single function, high cost, low toughness, low strength and poor coating applicability in practical application, which limits the use range and application field of the cermet coating, which is not conducive to energy saving of enterprises The realization of the goal of green development

Method used

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Embodiment Construction

[0012] The metal nickel ceramic coating with good thermal shock resistance is characterized in that it is made of the following raw materials in parts by weight: nano cerium dioxide 14, nickel powder 38, wollastonite 28, zinc oxide 14, di Vanadium boride 16, boron powder 18, glass fiber 5, rice bran wax 9, rice bran oil 6, sodium tripolyphosphate 4.5, ethyl orthosilicate 6, appropriate amount of water.

[0013] The preparation method comprises the following steps:

[0014] (1) Treat nano-cerium dioxide at 605-720°C for 30-50 minutes at high temperature, quickly cool it to room temperature with liquid nitrogen, add sodium tripolyphosphate and appropriate amount of water, ultrasonically shake for 20-40 minutes, spray dry, add ethyl orthosilicate Stir and mix the ester, stir at room temperature for 5-8h, and dry to constant weight;

[0015] (2) Add zinc oxide to the ball mill, spray rice bran oil into mist and mix well, add rice bran wax, and perform ball milling, mixing and dis...

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Abstract

The invention discloses a metallic nickel ceramic coating with excellent thermal shock resistance. The surface of matrix metal is coated with the ceramic coating manufactured by selecting metallic nickel as a metallic matrix and adopting refractory materials such as zinc oxide and vanadium diboride as ceramic phases. Alloying elements in the matrix metal diffuse towards the interface and are subjected to interfacial reactions with substances such as NiO in the coating, wherein one interfacial reaction follows the equation that NiO+M->MO+Ni. Reduced and precipitated active nickel atoms and the matrix metal M form Ni-M metallic bonds. Thus, the adherence of the metallic ceramic coating and the matrix metal is improved. Moreover, because rare-earth nano cerium dioxide is high in activity, the atomic orbital interaction of the rare-earth nano cerium dioxide with absorbed molecules is improved, the reactions are enhanced, adherence can be built soon, and added boron powder and nickel powder are combined so that the permeability of the coating can be improved. A manufacturing process of the metallic nickel ceramic coating is simple. The manufactured coating has the advantages of being excellent in thermal shock resistance, resistant to corrosion and the like.

Description

technical field [0001] The invention relates to the technical field of metal ceramic coating materials, in particular to a metal nickel ceramic coating with good thermal shock resistance and a manufacturing method thereof. Background technique [0002] In recent years, ceramic coating materials are ceramic materials that have received widespread attention. Traditional ceramic materials are brittle, which is not conducive to the further processing of ceramic materials, and also leads to slightly insufficient performance of ceramic materials in many fields. Metal-ceramic coating is a composite coating that not only has the good strength and toughness of metal, but also has the advantages of high temperature resistance, wear resistance and corrosion resistance of ceramics. Therefore, metal-ceramic coatings have gained important applications in many fields such as aviation and aerospace, such as rocket engine components that are subjected to complex and harsh working conditions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/08C22C32/00C22C30/06
Inventor 邢宝山陈坤卢佩庆
Owner BENGBU TRIUMPH ENG TECH CO LTD
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