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An anti-oxidation discoloration silver alloy composite material

A composite material and silver alloy technology, applied in the field of alloys, can solve the problems of high cost and low mechanical properties, and achieve the effects of reducing cracking, improving anti-discoloration, and improving growth mechanism

Active Publication Date: 2016-05-11
CHENZHOU CITY JINGUI SILVER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this formula can improve the structure of the alloy, refine the grains, purify the grain boundaries, and improve the ability to resist oxidation and discoloration, the alloy uses a large amount of rare earth metal elements such as germanium, yttrium, cerium, lanthanum and cobalt for alloying, and the cost is still High, while the mechanical properties are not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An anti-oxidation and discoloration silver alloy composite material, wherein every 100 g of the silver alloy contains 87 g of silver, 0.5 g of tin, 1 g of zinc, 3 g of vanadium, 5 g of manganese, 2 g of ruthenium, and 1.5 g of indium.

[0014] Its specific preparation process includes the following steps:

[0015] 1) Vacuum melting: Weigh 87g of silver, 0.5g of tin and 2g of ruthenium, heat and melt in a vacuum furnace respectively, control the temperature at 800°C, and vacuum degree of 0.001Mpa; then mix and stir evenly in a vacuum environment to make 89.5g of silver- Tin-ruthenium ternary alloy liquid;

[0016] 2) Take 10g of ternary alloy liquid, add 1g of zinc, 3g of vanadium, 5g of manganese, and 1.5g of indium respectively in the normal pressure, and control the temperature at 1200°C; mix and stir evenly, keep warm ;

[0017] 3) Add the intermediate alloy liquid in step 2) to the remaining ternary alloy liquid in step 1); control the vacuum degree to 0.001Mpa, a...

Embodiment 2

[0019] An anti-oxidation and discoloration silver alloy composite material, wherein every 100 g of the silver alloy contains 93 g of silver, 0.5 g of tin, 1.9 g of zinc, 0.5 g of vanadium, 2 g of manganese, 1.5 g of ruthenium, and 0.6 g of indium.

[0020] Its specific preparation process includes the following steps:

[0021] 1) Vacuum melting: Weigh 93g of silver, 0.5g of tin and 1.5g of ruthenium, heat and melt in a vacuum furnace respectively, control the temperature at 800°C, and vacuum degree of 0.001Mpa; then mix and stir evenly in a vacuum environment to make 95g of silver- Tin-ruthenium ternary alloy liquid;

[0022] 2) Take 9.5g of ternary alloy liquid, add 1.9g of zinc, 0.5g of vanadium, 2g of manganese, and 0.6g of indium to it under normal pressure, and control the temperature at 1200°C; mix and stir Uniform, heat preservation;

[0023] 3) Add the intermediate alloy liquid in step 2) to the remaining ternary alloy liquid in step 1); control the vacuum degree to ...

Embodiment 3

[0025] An anti-oxidation and discoloration silver alloy composite material, wherein every 100 g of the silver alloy contains 87 g of silver, 0.7 g of tin, 2.2 g of zinc, 1.5 g of vanadium, 2 g of manganese, 3.5 g of ruthenium, and 3.1 g of indium.

[0026] Its specific preparation process includes the following steps:

[0027] 1) Vacuum melting: Weigh 87g of silver, 0.7g of tin and 3.5g of ruthenium, heat and melt in a vacuum furnace respectively, control the temperature at 800°C, and vacuum degree of 0.001Mpa; then mix and stir evenly in a vacuum environment to make 91.2g of silver - tin-ruthenium ternary alloy liquid;

[0028] 2) Take 18g of ternary alloy liquid, add 2.2g of zinc, 1.5g of vanadium, 2g of manganese, and 3.1g of indium to it under normal pressure, and control the temperature at 1200°C; mix and stir evenly , insulation;

[0029] 3) Add the intermediate alloy liquid in step 2) to the remaining ternary alloy liquid in step 1); control the vacuum degree to 0.001...

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PUM

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Abstract

The invention provides an oxidation and discoloration resistant silver alloy composite material. The silver alloy composite material comprises the following components in percentage by weight: 87%-93% of silver, 0.5%-2% of tin, 1%-2.2% of zinc, 0.5%-3% of vanadium, 2%-5% of manganese, 1.5%-3.5% of ruthenium, and 0.6%-3.1% of indium. According to the invention, as tin, zinc, vanadium, manganese, ruthenium and indium are added into the silver alloy, the silver alloy is improved on the aspect of the oxidation and discoloration resistance, and is applied more widely.

Description

technical field [0001] The invention is an anti-oxidation and discoloration silver alloy composite material, which belongs to the field of alloys. Background technique [0002] Silver is the most widely distributed element among precious metals, containing twenty times more than gold. Adding other alloying elements to silver can improve the performance of silver, such as copper can increase the hardness of silver, lower the melting point, and improve castability. Therefore, silver alloy materials are widely used in jewelry, silverware, photography, electrical and electronic, electroplating and medical industries, and are also increasingly used in high-tech industries. However, long-term use of silver alloy materials is prone to vulcanization, discoloration and oxidative erythema, which affects the appearance and use. And the research work on the anti-tarnish silver alloy aspect has been carried out in the whole world, improves the anti-tarnish performance of silver alloy u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C5/06C22C1/03
Inventor 谭霖谢兆凤刘万里覃小龙柴承平粟明辉
Owner CHENZHOU CITY JINGUI SILVER IND CO LTD
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