Palladium alloy and preparation method thereof

An alloy, mass percentage technology, applied in the field of alloys, can solve the problems of low resistivity, low temperature coefficient of resistance, wear resistance, poor workability, and difficulty in mass production, and achieves improved wear resistance and oxidation resistance, improved ductility, less The effect of surface tension

Inactive Publication Date: 2014-12-24
YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Palladium-tungsten alloy is known as the most promising precious metal precision resistance material, with high resistivity, low temperature coefficient of resistance, high hardness and strength, good wear resistance and oxidation resistance, etc., because W is a high melting point, For metals with high hardness and high brittleness, palladium-tungsten alloys are severely brittle, cracked, and broken during processing, with extremely poor processability and difficult mass production

Method used

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  • Palladium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0019] A palladium-based alloy, the palladium-based alloy is: 20% tungsten, 50% palladium, 20% tin, and 10% chromium by mass percentage; the hardness of the palladium-based alloy is 540Hv, the tensile strength reaches 1600MPa, and the elongation is 12%, Young's modulus is 150 GPa, and resistivity is 220 μΩ·cm.

Embodiment 2

[0021] A palladium-based alloy, the palladium-based alloy by mass percentage is: 22% tungsten, 48% palladium, 25% tin, 5% chromium; the hardness of the palladium-based alloy is 550Hv, the tensile strength reaches 1670MPa, and the elongation is 13%, Young's modulus is 155GPa, and resistivity is 225μΩ·cm.

Embodiment 3

[0023] A palladium-based alloy, the palladium-based alloy by mass percentage is: 25% tungsten, 45% palladium, 22% tin, 8% chromium; the hardness of the palladium-based alloy is 545Hv, the tensile strength reaches 1680MPa, and the elongation is 14%, Young's modulus is 158GPa, and resistivity is 228μΩ·cm.

[0024] Table 1: Performance Test Table

[0025]

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Abstract

The invention relates to a palladium alloy which comprises the following components in percentage by mass: 20-25% of tungsten, 40-50% of palladium, 20-30% of tin and 5-10% of chromium. The hardness of the palladium alloy is 500-550Hv, the tensile strength is up to 1600-1700 MPa, the elongation percentage is 10-15%, the Young's modulus is 140-160 GPa, and the resistivity is 200-280 mu ohm.cm.

Description

technical field [0001] The invention relates to the field of alloys, in particular to palladium series alloys. Background technique [0002] In the prior art, there are many alloy foils, especially silver foils, but most of them are not conducive to large-area tiling, and the toughness and ductility are not enough. Although the prior art attempts to increase various mechanical properties of silver alloy foils from various angles, but The overall performance is not improved enough. For the main parameters such as Young's modulus, tensile strength, and hardness, it is necessary to improve the elongation or elongation while improving several other parameters. [0003] Palladium-tungsten alloy is known as the most promising precious metal precision resistance material, with high resistivity, low temperature coefficient of resistance, high hardness and strength, good wear resistance and oxidation resistance, etc., because W is a high melting point, For metals with high hardness ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/04C22C30/00C22C1/02
Inventor 郭健郭小芳郭乃林
Owner YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD
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