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Zirconia and yttria dispersion strengthening palau alloy and producing method thereof

A dispersion strengthening, palladium-gold alloy technology, applied in the field of precious metal alloys, can solve the problems of reduced strength, high price, limited service life, etc., and achieve the effects of excellent high temperature characteristics, good use economy and low cost.

Active Publication Date: 2009-03-18
英特派铂业股份有限公司
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The high-temperature durable strength and load-bearing capacity of this alloy exceed Pt-40Rh, and it can be used under high-temperature oxidation conditions, but platinum-rhodium is volatile, the grains are coarsened, the strength is reduced and creep occurs, the service life is limited, and the price is expensive. Large loss of rhodium, high investment and use costs

Method used

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  • Zirconia and yttria dispersion strengthening palau alloy and producing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: Pd100%.

[0018] Technical performance: when subjected to the same stress at high temperature, the fracture life is about 0.002 times that of ZGSPt-3Rh.

Embodiment 2

[0019] Embodiment 2: Au 1.5%, Pd 96.3%, Pt 2.0%, Zr 0.1%, Y 0.1%.

[0020] Technical performance: The fracture life is about 40 times that of ZGSPt-3Rh when subjected to the same stress at high temperature.

Embodiment 3

[0021] Example 3: Au3.5%, Pd92.0%, Pt4.0%, Zr0.3%, Y0.2%.

[0022] Technical performance: The fracture life is about 55 times that of ZGSPt-3Rh when subjected to the same stress at high temperature.

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Abstract

The invention relates to a precious metal alloy, in particular to a zirconia and yttria dispersion-strengthened palladium alloy and a production method thereof. In accordance with the technical proposal of the invention, the zirconia and yttria dispersion-strengthened palladium alloy comprises palladium, gold, zirconium and yttrium, wherein the elements in percentage by weight are: less than or equal to 7 percent but more than 0 percent of gold, less than or equal to 0.7 percent but more than 0 percent of zirconium, less than or equal to 0.5 percent but more than 0 percent of yttrium, the balance being palladium, wherein the zirconium and yttrium are uniformly dispersed in the alloy in the form of zirconia and yttria. The zirconia and yttria dispersion-strengthened palladium alloy can substitute for a zirconium oxide dispersion-strengthened platinum and rhodium alloy, and the production method reduces capital investment and using loss of a production line, significantly reduces glass production cost and increases economic benefit.

Description

technical field [0001] The invention relates to a precious metal alloy, in particular to a zirconia yttrium oxide dispersion strengthened palladium gold alloy and a production method thereof. Background technique [0002] This alloy is mainly used in glass fiber, electronic glass (CRT, TFT), and optical glass industry to manufacture key equipment. Currently, zirconia dispersion strengthened platinum-rhodium alloy is used in these industries. The composition is rhodium Rh3~10%, and platinum Pt is The balance, zirconium Zr content <0.5%. The high-temperature durable strength and load-bearing capacity of this alloy exceed Pt-40Rh, and it can be used under high-temperature oxidation conditions, but platinum-rhodium is volatile, the grains are coarsened, the strength is reduced and creep occurs, the service life is limited, and the price is expensive. The loss of rhodium is large, and the investment and use costs are high. Contents of the invention [0003] The purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/04C22C1/02C22F1/14
Inventor 吴显忠蒋正荣杨志先尹俊
Owner 英特派铂业股份有限公司