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Sealant of supersonic-speed flame sprayed iron-based amorphous coating and application of sealant

A supersonic flame, iron-based amorphous technology, applied in coating, metal material coating process, fusion spraying, etc.

Inactive Publication Date: 2012-11-28
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of sealing agent and its application of supersonic flame spraying iron-based amorphous coating, which can greatly improve the iron Corrosion and wear resistance of the base amorphous coating to solve the technical problem that ordinary sealing agents cannot achieve the effective sealing depth of supersonic flame spraying coatings

Method used

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  • Sealant of supersonic-speed flame sprayed iron-based amorphous coating and application of sealant
  • Sealant of supersonic-speed flame sprayed iron-based amorphous coating and application of sealant
  • Sealant of supersonic-speed flame sprayed iron-based amorphous coating and application of sealant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sealing agent for amorphous coatings, the sealing agent is made of Al(OH) 3 and H 3 PO 4 composition, and the corresponding weight ratio is 1:3.5; wherein, the Al(OH) 3 It is an industrial grade white powder product, which contains Al 2 o 3 The mass fraction is 64.5%, and the powder mesh number is 1250 mesh; the H 3 PO 4 It is a viscous, non-volatile orthophosphate concentrated solution, with a mass fraction of phosphoric acid content of 85%. Heat the above sealing agent to 70°C, wait until it reacts into a clear solution, and apply the sealing agent evenly by brushing. Coated on the surface of the coating, the base is 304 stainless steel base, let it stand at room temperature for 12 hours, so that it can fully penetrate into the pores of the coating, and then put the sealed spray coating into a drying oven to heat, and then heat it at 100 ° C, 200 °C and 250 °C respectively for 2 hours to obtain a thermal spray coating.

[0023] Performance Testing:

[0024...

Embodiment 2

[0026] Sealing agent for amorphous coatings, the sealing agent is made of Al(OH) 3 and H 3 PO 4 composition, and the corresponding weight ratio is 1:4.2; wherein, the Al(OH) 3 It is an industrial grade white powder product, which contains Al 2 o 3 The mass fraction is 64.5%, and the powder mesh number is 1250 mesh; the H 3 PO 4 It is a viscous, non-volatile orthophosphate concentrated solution, with a mass fraction of phosphoric acid content of 85%. Heat the above sealing agent to 70°C, wait until it reacts into a clear solution, and apply the sealing agent evenly by brushing. Coated on the surface of the coating, the base is 304 stainless steel base, let it stand at room temperature for 12 hours, so that it can fully penetrate into the pores of the coating, and then put the sealed spray coating into a drying oven to heat, and then heat it at 100 ° C, 200 ℃ and 250 ℃ respectively for 2 hours.

[0027] Performance Testing:

[0028] The test results show that the coa...

Embodiment 3

[0030] Sealing agent for amorphous coatings, the sealing agent is made of Al(OH) 3 and H 3 PO 4 Composition, and the corresponding weight ratio is 1:5; wherein, the Al(OH) 3 It is an industrial grade white powder product, which contains Al 2 o 3 The mass fraction is 67%, and the powder mesh number is 1250 mesh; the H 3 PO 4It is a viscous, non-volatile orthophosphate concentrated solution, the mass fraction of phosphoric acid content is 90%, the above sealing agent is heated to 70°C, and after it reacts into a clear solution, the sealing agent is evenly applied by brushing. Coated on the surface of the coating, the base is 304 stainless steel base, let it stand at room temperature for 12 hours, so that it can fully penetrate into the pores of the coating, and then put the sealed spray coating into a drying oven to heat, and then heat it at 100 ° C, 200 ℃ and 250 ℃ respectively for 2 hours.

[0031] Performance Testing:

[0032] The test results show that the coatin...

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Abstract

The invention provides a sealant of a supersonic-speed flame sprayed iron-based amorphous coating and an application of the sealant. The sealant is characterized in that the sealant is mainly formed by Al(OH)3 and H3PO4 in a weight ratio of 1: 4.2; a specific application process comprises the following steps of: heating the sealant to 70 DEG C and uniformly coating the sealant on the surface of the coating through a brushing or immersing method; standing at a room temperature for 12 hours; and then preserving heat of the sealed sprayed coating at 100 DEG C, 200 DEG C and 250 DEG C in sequence respectively for 2 hours to obtain a hotly-sprayed coating with the good sealing effect. The sealant is an organic sealant and can realize the effective sealing depth on a supersonic-speed flame sprayed coating; the sealant has excellent coating compatibility and can meet the requirements of high corrosion resistance and wear resistance of a coating product; and furthermore, the application process of the sealant has the advantages of simplicity, convenience for operation and short sealing period.

Description

technical field [0001] The invention relates to a hole sealing process for improving the corrosion resistance and wear resistance of coatings, and in particular provides a sealing agent for supersonic flame spraying of iron-based amorphous coatings and its application. Background technique [0002] Due to the absence of defects such as grain boundaries, defects, segregation and precipitates of crystalline materials, amorphous alloys exhibit excellent mechanical properties (high strength, high specific strength, high elastic limit, high wear resistance) that many crystalline metals do not have. properties) and excellent corrosion resistance, with higher corrosion resistance and erosion resistance than conventional stainless steel. Supersonic flame spraying technology improves the jet velocity of molten droplets in the ordinary spraying process while reducing the superheating degree of particles, and can prepare coatings with high hardness, low porosity, good wear resistance a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/18C23C4/06C23C4/12C23C4/129
Inventor 孙文海王勇王建强郑玉贵王淑兰常新春侯万良
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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