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Preparation method of nanofiller modified ceramic coating

A nano-filler and ceramic coating technology, which is applied in metal material coating process, coating, superimposed layer plating, etc., can solve the restrictions on the application of nano-ceramic coating materials, low thermal shock resistance, wear resistance, and combination Low strength and other problems, to achieve the effect of low cost, improved performance and simple process

Active Publication Date: 2021-05-28
UNIV OF SCI & TECH BEIJING
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the coatings prepared by the current slurry method generally have shortcomings such as low bonding strength, thermal shock resistance and low wear resistance, which restrict the application of nano-ceramic coating materials.

Method used

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preparation example Construction

[0030] The invention provides a method for preparing a nano-filler modified ceramic coating, comprising the following steps:

[0031] The preparation method of nano filler modified ceramic coating comprises the following steps:

[0032] 1) Clean the surface: remove dust, grease and oxides on the surface of the metal substrate, and clean and dry the surface;

[0033] 2) Preparing the transition layer: roughening the surface of the metal substrate, spraying the powder of the transition layer onto the surface of the metal substrate by thermal spraying to form a bonding layer;

[0034] 3) After fully mixing the oxide powder, add it to the inorganic binder, add an appropriate amount of additives after stirring evenly, stir evenly to obtain a slurry, add nano fillers in proportion, and continue stirring evenly to obtain the final slurry;

[0035] 4) Spraying or coating the slurry on the bonding layer formed in step 2) to form a surface coating with a thickness of 150-500 μm, and dr...

Embodiment 1

[0053] A method for preparing a nano-filler modified ceramic coating, comprising the following steps:

[0054] 1) Clean the surface: remove dust, grease and oxides on the surface of the metal substrate, and clean and dry the surface;

[0055] 2) Preparation of the transition layer: roughen the surface of the metal substrate by sandblasting, and spray the powder of the transition layer onto the surface of the metal substrate by thermal spraying to form a bonding layer with a thickness of 100 μm;

[0056] 3) Mix the oxide powder thoroughly and add it to the sodium silicate. After stirring evenly, add an appropriate amount of silicone defoamer. After stirring evenly to obtain a slurry, add nano-alumina powder and nano-zirconia powder in proportion, and continue stirring The final slurry is uniformly obtained, and the powder is composed of the following raw materials in parts by weight: 47% of silicon oxide; 25% of aluminum oxide; 22% of zirconia; 6% of titanium oxide; The weight...

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Abstract

The invention provides a preparation method of a nanofiller modified ceramic coating. The preparation method comprises the steps of surface cleaning, transition layer preparation, ceramic coating preparation and the like. The preparation method of the nanofiller modified ceramic coating has the characteristics of simple process, low cost and the like, the prepared nanofiller modified ceramic coating has good bonding strength, thermal shock resistance and wear resistance, and meanwhile, the service life of the coating is remarkably prolonged. Compared with a ceramic coating in the prior art, the performance of the nanofiller modified ceramic coating prepared with the method is improved by 40% or above.

Description

technical field [0001] The invention relates to the technical field of ceramic coatings, in particular to a preparation method of nano filler modified ceramic coatings. Background technique [0002] Nanomaterials research is one of the hot spots in the field of material science research. Nanomaterials refer to a class of material systems whose grain size is less than 100nm in at least one dimension and must have electrical, optical, thermal, chemical or mechanical properties that are completely different from ordinary bulk materials. Nanomaterials have fundamentally changed the structure of materials, and it is expected to obtain a new generation of materials such as high-strength metals and alloys, plastic ceramics, intermetallic compounds, and atomic-scale composite materials with specific properties. problem opens up new avenues. [0003] Research on nano-ceramics began in the mid-1980s. Nano-ceramics means that in the microstructure of ceramic materials, grains, grain...

Claims

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Application Information

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IPC IPC(8): C23C28/00C23C4/073C23C4/08C23C26/00
CPCC23C28/321C23C28/322C23C28/3215C23C28/345C23C4/08C23C4/073C23C26/00
Inventor 白皓张泽飞陈豪李立鸿
Owner UNIV OF SCI & TECH BEIJING
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