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 fe

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
CPCC04B41/009C04B41/5116
Inventor 周全法徐正包建春
Owner NANJING UNIV
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