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Titanium alloy protective coating and preparation method thereof

A protective coating and titanium alloy technology, which is applied in the field of new composite titanium alloy high-temperature protective coating and its preparation, can solve the problems of restricting the application of glass-ceramic coatings, achieve excellent high-temperature oxidation resistance, and the preparation process is simple and easy. good compatibility

Active Publication Date: 2014-05-21
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in order to prepare glass-ceramic coatings with excellent performance, the composition selection and preparation process must be precisely controlled, which limits the application of glass-ceramic coatings to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Weigh the raw materials of the glass matrix and mix them to obtain a mixture, which consists of 35 parts by mass of silicon dioxide, 25 parts by mass of boron oxide, 5 parts by mass of aluminum oxide, 10 parts by mass of magnesium oxide, 10 parts by mass of part of calcium oxide and 15 parts by mass of sodium oxide, and then put the mixture in a 200ml corundum crucible, and melt it at 1200°C for 1 hour in a horse boiling furnace, then take out the crucible, pour the glass liquid into cold water quickly, and Quenching to obtain glass particles, after the glass particles are dried, put them into a corundum ball mill tank and add absolute ethanol as a dispersant for ball milling for 24 hours, the ball milling speed is 200 rpm, after ball milling, take out the refined glass powder and dry it, pass through a 200-mesh sieve Finally, glass powder with uniform particle size is obtained;

[0022] (2) The above-mentioned glass powder and amorphous silica powder are mixed to o...

Embodiment 2

[0027] (1) Weigh the raw materials of the glass matrix and mix them to obtain a mixture, which consists of 35 parts by mass of silicon dioxide, 25 parts by mass of boron oxide, 5 parts by mass of aluminum oxide, 10 parts by mass of magnesium oxide, 10 parts by mass of part of calcium oxide and 15 parts by mass of sodium oxide, and then put the mixture in a 200ml corundum crucible, and melt it at 1200°C for 1 hour in a horse boiling furnace, then take out the crucible, pour the glass liquid into cold water quickly, and Quenching to obtain glass particles, after the glass particles are dried, put them into a corundum ball mill jar and add absolute ethanol as a dispersant for ball milling for 24 hours, the ball milling speed is 200 rpm, after ball milling, take out the refined glass powder and dry it, and pass it through a 200-mesh sieve Finally, glass powder with uniform particle size is obtained;

[0028] (2) The above-mentioned glass powder and amorphous silica powder are mixe...

Embodiment 3

[0033] (1) Weigh and mix the raw materials of the glass matrix to obtain a mixture, which consists of 30 parts by mass of silicon dioxide, 30 parts by mass of boron oxide, 5 parts by mass of alumina, 10 parts by mass of magnesium oxide, 10 parts by mass of part of calcium oxide and 15 parts by mass of sodium oxide, and then put the mixture in a 200ml corundum crucible, and melt it at 1200°C for 1 hour in a horse boiling furnace, then take out the crucible, pour the glass liquid into cold water quickly, and Quenching to obtain glass particles, after the glass particles are dried, put them into a corundum ball mill jar and add absolute ethanol as a dispersant for ball milling for 24 hours, the ball milling speed is 200 rpm, after ball milling, take out the refined glass powder and dry it, and pass it through a 200-mesh sieve Finally, glass powder with uniform particle size is obtained;

[0034] (2) The above-mentioned glass powder and amorphous silica powder are mixed to obtain ...

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Abstract

The invention discloses a titanium alloy protective coating which is characterized in that the coating is an amorphous silica-glass composite coating formed by diffusing and distributing 20-40 weight percent of amorphous silica particles in a glass matrix, wherein the glass matrix in the composite coating comprises the following raw materials in parts by mass: 30-40 parts of silica, 20-30 parts of boron oxide, 2-5 parts of aluminum oxide, 5-15 parts of magnesium oxide, 5-15 parts of calcium oxide and 10-20 parts of sodium oxide. The method for preparing the titanium alloy protective coating comprises the following steps: preparing glass powder; preparing slurry for the composite coating, pretreating the surface of the titanium alloy, coating the slurry and sintering the composite coating. The composite coating prepared in the invention can be sintered at a low temperature and has excellent high-temperature oxidization resistance. Meanwhile, the composite coating is low in raw material cost, simple and feasible in preparation process and suitable for industrial production.

Description

technical field [0001] The invention relates to high temperature protection technology of titanium alloy, relates to a titanium alloy protective coating and a preparation method thereof, in particular to a novel composite titanium alloy high temperature protective coating in which amorphous silicon dioxide particles are dispersed and distributed in a glass matrix and The preparation method thereof is used to improve the high-temperature protection performance of the titanium alloy. Background technique [0002] As a new type of light metal material, titanium alloy has the advantages of low density, high specific strength, and corrosion resistance. It is widely used in aerospace, marine engineering, petrochemical and other fields. However, the oxidation and oxygen embrittlement of titanium alloys at high temperatures It is very serious. On the one hand, at high temperature, the surface of titanium alloy may undergo oxidation reaction with oxygen in the atmosphere to form a la...

Claims

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Application Information

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IPC IPC(8): C03C8/14C23D5/02C23D11/00
Inventor 谈发堂肖尊其王维乔学亮陈建国
Owner HUAZHONG UNIV OF SCI & TECH
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