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Molten gold resisting high-temp sinter and its preparing process

A high-temperature, gold-water technology, applied in metal material coating process, solid-state chemical plating, coating and other directions, can solve the problems of high-temperature sintering resistance and poor adhesion

Inactive Publication Date: 2002-08-14
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that the high temperature sintering resistance and adhesion are poor. There are few products that can withstand high temperature sintering up to 850°C in various formulas of gold water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 20g of electrolytic gold powder into a flat-bottomed flask, add 100mL of aqua regia, and heat in a water bath until the gold powder is completely dissolved. Add a small amount of hydrochloric acid and continue heating to remove excess nitric acid. Cool and filter. Dissolve 6 g of ammonium chloride solid in a small amount of water, add the ammonium chloride solution to the gold-containing filtrate under constant stirring, and heat in a water bath until dry to obtain ammonium perchlorate gold solid. Dissolve the gold ammonium perchlorate solid in 100 mL of absolute ethanol, and add 70 g of sulfurized balsam dropwise (completely added within 1 to 1.5 hours). After heating the mixture on a boiling water bath for 1.5 hours, the heating was stopped. Add a small amount of absolute ethanol and stir thoroughly, let it stand still, pour out the solid gold resinate by decantation, and wash with absolute ethanol until the gold resinate becomes a powdery solid. After filtrati...

Embodiment 2

[0018] Prepare gold resinate, thorium resinate, rhodium resinate, antimony resinate, lead resinate and bismuth resinate in the same manner as in Example 1, and prepare rhodium resinate solution containing 5% rhodium, resin containing 20% ​​thorium Thorium acid solution, antimony 10% antimony resinate solution, lead 10% lead resinate solution and bismuth 30% bismuth resinate solution. Accurately weigh 10.0 g of 5.0% rhodium-containing rhodium resinate solution, 25.0 g of 20% thorium-containing thorium resinate solution, 6.0 g of 10% antimony-containing antimony resinate solution and 59.0 g of mixed solvent, and mix evenly to obtain a high temperature resistant Gold water additives (the contents of thorium, rhodium and antimony are respectively 5.0%, 0.5% and 0.6%). Accurately take by weighing lead-containing 10% lead resinate solution 40g, bismuth-containing 30% bismuth resinate solution 46.7g and mixed solvent 13.3g, mix homogeneously, obtain gold-water adhesion enhancer (the ...

Embodiment 3

[0021] Prepare gold resinate, thorium resinate, rhodium resinate, antimony resinate, lead resinate and bismuth resinate in the same manner as in Example 1, and prepare rhodium resinate solution containing 5% rhodium, resin containing 20% ​​thorium Thorium acid solution, antimony 10% antimony resinate solution, lead 10% lead resinate solution and bismuth 30% bismuth resinate solution. Accurately weigh 15.0 g of 5.0% rhodium-containing rhodium resinate solution, 40.0 g of 20% thorium-containing thorium resinate solution, 12.0 g of 10% antimony-containing antimony resinate solution and 43.0 g of mixed solvent, and mix evenly to obtain a high-temperature resistant Gold water additives (the contents of thorium, rhodium and antimony are respectively 8.0%, 0.75% and 1.2%). Accurately take by weighing lead-containing 10% lead resinate solution 40g, bismuth-containing 30% bismuth resinate solution 46.7g and mixed solvent 13.3g, mix homogeneously, obtain gold-water adhesion enhancer (th...

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PUM

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Abstract

A gold solution resisting high-temp sinter for ceramic decoration contains Au (10-15 wt.%), Th (2.2-3.0), Rh (0.1-0.3), Sb (0.1-0.8), Pb (0.3-0.4), Bi (1.0-1.4) and mixed solvent. It is prepared through preparing resinates of thorium nitrate, RhO3 and SbCl3, mixing them together; preparing gold ammonium percloride from AuCl3, reaction on balsam sulfide to obtain gold resinate; preparing resinatesof lead nitrate and bismuth nitrate, mixing them together; mixing said three components together, and diluting with mixed solvent.

Description

1. Technical field [0001] The invention relates to high-temperature-resistant sintered gold water and a preparation method thereof, belonging to the technical field of ceramic decorative paint production. 2. Background technology [0002] Gold water, also known as bright gold water, is a brown-black viscous liquid in an oily medium that contains 10-12% pure gold and a small amount of rhodium, chromium, bismuth and other metal compounds. It can be applied to the ceramic glaze by brushing, printing, etc., and then heated with a weak fire (about 300 ° C), the oil is evaporated and burned, and the gold-containing compound is decomposed to leave a dazzling and extremely thin gold layer, and then heated It can be firmly bonded to the glazed surface at 750°C. Using gold water as ceramic glaze decoration is one of the cheap and high-quality gold decoration methods. Before the present invention, gold water was generally made through the following processes: dissolving gold in aqua ...

Claims

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Application Information

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IPC IPC(8): C04B41/51
CPCC04B41/009C04B41/5116C04B41/4535C04B41/455C04B41/51C04B33/00
Inventor 周全法徐正包建春
Owner NANJING UNIV
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