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Method for preparing SiTiOC ceramic coating

A ceramic coating and coating technology, applied in coating, metal material coating process, solid-state chemical plating, etc., can solve the problems of unfavorable ceramic composite coating preparation, difficult process control, complicated preparation steps, etc., and achieve friction The effect of lower coefficient, easy availability of raw materials, and simple process

Active Publication Date: 2017-07-04
ACADEMY OF ARMORED FORCES ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the filler micro-nano powder in organic polymers often has problems such as particle agglomeration and uneven dispersion, which is not conducive to the preparation of high-performance ceramic composite coatings.
However, using organic polymers containing metal elements as precursors to prepare SiMOC ceramic composite coating materials can effectively avoid the dispersion of filler particles, and at the same time effectively reduce the porosity of ceramic coatings and suppress cracks in ceramic coatings. However, PDC The method adopts thermal cracking, but there are still disadvantages such as complicated preparation steps, long preparation cycle, and difficult process control.

Method used

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  • Method for preparing SiTiOC ceramic coating
  • Method for preparing SiTiOC ceramic coating
  • Method for preparing SiTiOC ceramic coating

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1 prepares the method (1) of SiTiOC ceramic coating

[0032] Step 1: Preparation of titanium organosilicon compound. According to the mass ratio of 1:1, weigh 100g each of γ-glycidoxypropyltrimethoxysilane and butyl titanate respectively, mix them in a 500mL beaker, and perform ultrasonic chemical reaction in a constant temperature water bath at 50°C for 5min , obtain a yellow transparent titanium organosilicon compound, its main molecular structure formula is:

[0033]

[0034] Step 2: Pretreatment of the metal surface to be coated. A 45 steel substrate with a size of 15 mm × 15 mm × 3 mm was sandblasted and ultrasonically cleaned in acetone solution for 15 min.

[0035] Step 3: Preparation of titanium organosilicon compound coating. Coating the titanium organosilicon compound prepared in step (1) on the surface of the 45 steel substrate to obtain a titanium organosilicon coating A with a thickness of 200 μm.

[0036] Step 4: Curing of the titanium si...

Embodiment 2

[0038] Embodiment 2 prepares the method (2) of SiTiOC ceramic coating

[0039] Step 1: Preparation of titanium organosilicon compound. According to the mass ratio of 3:2, weigh 60g of γ-glycidoxypropyltrimethoxysilane and 40g of butyl titanate respectively, mix them in a beaker, and perform ultrasonic chemical reaction in a constant temperature water bath at 40°C for 8min , obtain a yellow transparent titanium organosilicon compound, its main molecular structure formula is:

[0040]

[0041] Step 2: Metal surface pretreatment. A 45 steel substrate with a size of 15 mm × 15 mm × 3 mm was sandblasted and ultrasonically cleaned in acetone solution for 15 min.

[0042] Step 3: Preparation of titanium organosilicon compound coating. The titanium organosilicon compound prepared in step (1) was coated on the surface of the 45 substrate, and the thickness of the coated titanium organosilicon compound was 180 μm to obtain a titanium organosilicon coating A.

[0043]Step 4: Curin...

Embodiment 3

[0045] Embodiment 3 prepares the method (3) of SiTiOC ceramic coating

[0046] Step 1: Preparation of titanium organosilicon compound. According to the mass ratio of 4:1, weigh 80 g of γ-aminopropyltriethylsilane and 20 g of butyl titanate respectively, mix the two in a beaker, and perform ultrasonic chemical reaction in a constant temperature water bath at 30°C for 10 minutes to obtain Light yellow transparent titanium organosilicon compound, its main molecular structure formula is:

[0047]

[0048] Step 2: Metal surface pretreatment. A 45 steel substrate with a size of 15 mm × 15 mm × 3 mm was sandblasted and ultrasonically cleaned in acetone solution for 15 min.

[0049] Step 3: Preparation of titanium organosilicon compound coating. The titanium organosilicon compound prepared in step (1) was coated on the surface of the 45 substrate, and the thickness of the coated titanium organosilicon compound was 210 μm to obtain a titanium organosilicon coating A.

[0050] St...

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Abstract

The invention discloses a method for preparing a SiTiOC ceramic coating, and belongs to the technical field of chemical synthesis and ceramic coating preparing. The method comprises the following steps that firstly, butyl titanate and an organic silicon compound are subjected to the chemical reaction, and a titanium organic silicon compound is prepared; secondly, the surface of a base body is coated with the titanium organic silicon compound, and curing is conducted; and thirdly, continuous lasers are utilized for scanning a solid titanium organic silicon coating prepared in the second step, the coating is split, and the SiTiOC ceramic coating is obtained. The method is simple, convenient and easy to operate, the preparing period is short, and the efficiency is high; laser scanning cannot generate negative effects on the shape or structure performance of the base body; the prepared SiTiOC ceramic coating is low in porosity, has excellent corrosion preventing, abrasion resisting and friction reducing properties, is not prone to generating cracks, is suitable for scale production and has wide application prospects in the fields of aerospace, national defense, chemical engineering, machinery, electric power, electrons and the like.

Description

technical field [0001] The invention relates to the technical fields of chemical synthesis and preparation of ceramic coatings, in particular to a method for preparing SiTiOC ceramic coatings with anti-corrosion and wear-resistant properties by using continuous laser cracking of titanium organosilicon compounds. Background technique [0002] The preparation of high-performance coating materials on the surface of metal materials, so that parts have both the excellent performance of metal and coating materials, is an effective means to solve the problem that pure metal parts cannot meet the increasingly harsh service conditions. Ceramic coating materials based on carbon, boron, and nitrides have excellent properties such as low density, high strength, high hardness, wear resistance, corrosion resistance, and high temperature resistance, but they have disadvantages such as poor plasticity, brittleness, and easy cracks. Its application is subject to certain restrictions. In ord...

Claims

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Application Information

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IPC IPC(8): C23C20/08C08G77/22C09D183/08
CPCC08G77/22C09D183/08C23C20/08
Inventor 乔玉林赵吉鑫黄克宁刘军蔡志海
Owner ACADEMY OF ARMORED FORCES ENG PLA
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