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Titanium-base scale-proof coating and preparation method thereof

A coating and fouling technology, which is applied in coating, liquid chemical plating, metal material coating technology, etc., can solve the problem of performance degradation of electric heating devices, reduced service life of electric heating devices, and inability to eliminate scaling on the surface, etc. Problems, to achieve the effect of improving anti-corrosion performance, preventing surface scaling, and lower environmental requirements

Active Publication Date: 2009-07-15
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem that the electric heating device has not solved for a long time is: scaling occurs on the surface in contact with water during use, which leads to problems such as reduced service life of the electric heating device, slow heat conduction, etc., resulting in a decline in the overall performance of the electric heating device, or even damage
Such as: stainless steel, copper, enamel, polymer materials, etc. are used as the surface in contact with water, and even gold-plated on the surface, but the desired effect is not achieved, and the scaling phenomenon on the surface in contact with water cannot be eliminated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Using pure titanium material as the base material, the purity is 99wt%, and the anti-scaling layer is plated on the surface. When coating, ruthenium chloride, palladium chloride, nickel sulfate, cobalt sulfate, and ytterbium nitrate are mixed in a certain amount to form a plating solution. , the plating solution is proportioned according to the weight ratio of the main components forming the anti-scaling coating, and the weight ratio of the main components in the anti-scaling coating is ruthenium: palladium: nickel: cobalt: ytterbium=0.2:0.5:0.1:0.07:0.2, The weight of sodium hypophosphite and sodium borohydride in the plating solution is 1 times the weight of other metal salts. After heating the plating solution to 50°C, immerse the base material for electroless plating, and plate for 20 minutes to form an anti-scaling coating, then annealing, the temperature is controlled at 300 °C, so that the anti-fouling coating and the outer surface of the base material are effecti...

Embodiment 2

[0021] A titanium alloy material is used as the base material, wherein the titanium content is 90 wt%, and the balance is vanadium. Plating anti-fouling layer on its surface, adopting method is similar to embodiment 1. A plating solution is formed by mixing ruthenium chloride, palladium chloride, nickel sulfate, cobalt sulfate, samarium nitrate, sodium hypophosphite, and sodium borohydride in a certain amount, and a small amount of lactic acid is also added. The plating solution is proportioned according to the weight ratio of the main components forming the anti-scaling coating, and the weight ratio of the main components in the anti-scaling coating is ruthenium: palladium: nickel: cobalt: samarium = 0.5: 0.2: 0.4: 0.1: 0.05, The weight of sodium hypophosphite and sodium borohydride in the bath is 1.3 times that of other metal salts. During the plating process, after heating the plating solution to 70°C, immerse the base material for electroless plating, and plate for 40 min...

Embodiment 3

[0023] The titanium alloy material is used as the base material, wherein the titanium content is 95wt%, and the balance is vanadium and aluminum. Anti-scaling layer is plated on its surface. A plating solution is formed by mixing ruthenium chloride, palladium chloride, nickel sulfate, cobalt sulfate, cerium chloride, sodium hypophosphite, and sodium borohydride in a certain amount, in which a small amount of citric acid is added. The plating solution is proportioned according to the weight ratio of the main components forming the anti-scaling coating, and the weight ratio of the main components in the anti-scaling coating is ruthenium: palladium: nickel: cobalt: cerium = 0.7: 0.6: 0.6: 0.05: 0.3, The weight of sodium hypophosphite and sodium borohydride in the bath is 1.6 times that of other metal salts. During the plating process, after heating the plating solution to 100°C, immerse the base material for electroless plating, and plate for 60 minutes to form an anti-scaling c...

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Abstract

The invention relates to a titanium-based antifouling coating and a preparation method thereof, belonging to the field of surface protection. It is mainly based on titanium or titanium alloy materials. The content of titanium in titanium alloy materials is not less than 90wt%, and the rest is aluminum and / or vanadium. The surface is coated with an anti-fouling layer. The main components of the coating are ruthenium, palladium, and nickel. , cobalt and lanthanide, the weight ratio of its content is, ruthenium: palladium: nickel: cobalt: lanthanide = (0.2~0.7): (0.2~0.6): (0.1~0.6): (0.05~0.1): (0.05~0.3). The anti-scaling and anti-corrosion effect of the titanium-based anti-fouling coating of the invention is remarkable, solves the problem of long-term fouling on the surface of the electric heating device, and becomes the best way to improve the performance of the existing electric heating device and increase the thermal efficiency.

Description

technical field [0001] The invention relates to an anti-scaling coating applied on a titanium substrate, in particular to a surface scaling protection method for preventing an electric heating device from contacting with water. Background technique [0002] At present, electric heating devices are widely used in industrial fields and people's daily life, bringing more convenience to production and life. Especially in recent years, the output of electric water heaters has increased significantly, bringing huge profits to manufacturers. However, the problem that the electric heating device has not solved for a long time is: scaling occurs on the surface in contact with water during use, which leads to problems such as reduced service life of the electric heating device, slow heat conduction, etc., resulting in a decline in the overall performance of the electric heating device, or even damage . For this reason, various manufacturers conduct research on various methods and st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C30/00C23C18/31C22F1/00
Inventor 李文祥江小平
Owner GRIMAT ENG INST CO LTD
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