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Fly ash glass/ceramic composite coating and preparation method thereof

A technology of ceramic composite and fly ash, which is applied in the field of coating preparation and fly ash, can solve the problems of insufficient technology maturity and achieve the effect of simple process, low cost and wide sources

Inactive Publication Date: 2013-07-10
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the continuous deepening of the understanding of the properties and structure of fly ash, the high value-added application of fly ash will become more and more extensive, but some technologies are not mature enough, and further research is needed

Method used

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  • Fly ash glass/ceramic composite coating and preparation method thereof
  • Fly ash glass/ceramic composite coating and preparation method thereof
  • Fly ash glass/ceramic composite coating and preparation method thereof

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preparation example Construction

[0029] The invention provides a fly ash glass / ceramic composite coating and a preparation method thereof. The glass / ceramic composite coating is prepared on a Q235 steel substrate. The preparation method uses fly ash as raw material, and adds some additives, adopts thermochemical reaction method to prepare fly ash glass / ceramic composite coating on the surface of Q235 steel substrate, so as to improve the bonding strength and corrosion resistance of the coating and the substrate. and wear resistance.

[0030] Described preparation method comprises the steps:

[0031] The first step, raw material preparation:

[0032] Select the coating aggregate fly ash, add Al to the fly ash at a mass percentage of 5%; then add SiO 2 、Al 2 o 3 , MgO and albite, so that SiO in the coating aggregate 2 :Al 2 o 3 :MgO:albite=67:22:5:5 (mass ratio); then add Al-B to it according to the mass percentage of 10% 2 o 3 -TiO 2 Exothermic system, where Al, B 2 o 3 and TiO 2 The atomic ratio ...

Embodiment

[0061] Below, according to the preparation method of fly ash glass / ceramic composite coating provided by the present invention, a kind of implementation process of preferred scheme is provided, and concrete preparation process and experimental effect are as follows:

[0062] The first step, raw material preparation:

[0063] Select the coating aggregate as ordinary fly ash powder, add Al to the fly ash at a mass percentage of 5%; then add SiO 2 、Al 2 o 3 , MgO and albite, so that SiO in the coating aggregate 2 :Al 2 o 3 :MgO:albite=67:22:5:5; then add Al-B according to the mass percentage of 10% 2 o 3 -TiO 2 Exothermic system, where Al, B 2 o 3 and TiO 2 The atomic ratio is 10:3:3. The molecular formula of albite is NaAlSi 3 o 8 .

[0064] The second step is the pretreatment of the coating aggregate.

[0065] The fly ash was burned at 800 °C for 2 h for decarbonization, and the SiO 2 、Al 2 o 3 , MgO was burned at 900°C for 1h. Burnt fly ash, SiO 2 、Al 2 o ...

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Abstract

The invention provides a fly ash glass / ceramic composite coating and a preparation method thereof, belonging to the technical field of composite coating technology. According to the invention, the fly ash is used as raw materials, Al powder, SiO2-Al2O3-MgO, albite, an Al-TiO2-B2O3 heat release system and the like are added to form composite powder, and then the glass / ceramic composite coating is prepared. After thermal curing, the coating comprises Na2B4O7, TiB2, NaB15 and Al2O3 and other new phases, acid resistance, salt resistance and petroleum medium corrosivity of the coating are respectively improved by 27.4 times, 4.00 times and 1.88 times compared with those of a substrate, and grain wear resistance of the coating is increased by 8.33-14.83 times compared with that of the substrate.

Description

technical field [0001] The invention belongs to the technical field of coating preparation, relates to the technical field of fly ash, and specifically refers to a fly ash glass / ceramic composite coating and a preparation method thereof. Background technique [0002] Among the countries with large emissions, my country has the highest utilization rate and amount of fly ash. The former Soviet Union is mainly wet-discharged fly ash with a utilization rate of 13%, which is mainly used to make wall products, cement, concrete and road filling materials. In Poland, the utilization of fly ash is mainly for building materials. The comprehensive utilization of fly ash started earlier in France, especially in cement and concrete application technology research has a deep foundation. my country has always attached great importance to the comprehensive utilization of fly ash. In the 1950s, it began to be used in mortar admixtures, concrete, paving roads, and producing bricks; in the ...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B18/08
CPCY02W30/91
Inventor 马壮董世知李智超
Owner LIAONING TECHNICAL UNIVERSITY
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