A palladium alloy containing precious and rare metals, its preparation method and application
A rare metal and palladium alloy technology, applied in the field of precious metal electrical alloy materials and engineering applications, can solve problems such as the difficulty of processing multi-component alloys, and achieve the effects of expanding the use of materials, improving product quality, and shortening the processing process.
Active Publication Date: 2020-12-11
SINO PLATINUM METALS CO LTD +1
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- Description
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- Application Information
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Problems solved by technology
[0009] (1) Refining the grain structure of the alloy, so that the alloy structure has no segregation, and the composition has no segregation; (2) Overcoming the problems such as the difficulty in processing multi-element alloys, so that the processing efficiency of the alloy is improved, the yield is improved, and the structure and performance are uniformly improved; (3) ) Improve the technical performance of the alloy, expand its application fields, and improve product quality
Method used
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Embodiment 1
[0031] According to the alloy composition ratio (mass%) W3%, Ni0.5%, Pt0.5%, Au0.5%, Cr0.5%, Nb0.5%, Re0.5%, Ta0.5%, the balance is Pd.
Embodiment 2
[0033] According to the alloy composition ratio (mass%) W5%, Ni0.7%, Pt0.7%, Au0.7%, Cr0.7%, Nb0.7%, Re0.7%, Ta0.7%, the balance is Pd.
Embodiment 3
[0035] According to the alloy composition ratio (mass %) W7%, Ni1%, Pt1%, Au1%, Cr1%, Nb1%, Re1%, Ta1%, the balance is Pd.
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Abstract
The invention discloses a palladium alloy containing noble and rare metals as well as a preparation method and application thereof, and belongs to the technical field of noble metal electrical alloy materials. The palladium alloy comprises the following alloy components of, in percentage by mass, 5%-20% of W, 0.05%-3.0% of Ni, 0.05%-3.0% of Pt, 0.05%-3.0% of Au, 0.05%-3.0% of Cr, 0.05%-3.0% of Nb,0.05%-3.0% of Re, 0.05%-3.0% of Ta, and the balance Pd. The palladium alloy is prepared through methods of directional solidification, drawing, rolling and the like, the chemical components of the palladium alloy are uniform, continuous feeding, alloying smelting and directional solidification crystallization can be achieved, the size of a rod blank ingot ranges from phi 8 mm to phi 30 mm, and the oxygen content is smaller than or equal to 100 ppm. According to the palladium alloy, the grain structure of the alloy is obviously refined, and the defects of structure segregation, looseness, shrinkage cavities, low density and the like existing in a traditional smelting method for preparing the palladium-tungsten alloy are overcome; the vacuum directional solidification improves the processing efficiency, the yield and the structure performance of the alloy to different degrees, and the alloy can be used as a resistance material, a strain material, a contact material and other components.
Description
technical field [0001] The invention relates to a palladium alloy containing precious and rare metals, a preparation method and application thereof, and belongs to the technical field of precious metal electrical alloy materials and engineering applications. Background technique [0002] Palladium-tungsten alloy has moderate resistivity, low temperature coefficient of resistance, low electric noise, low and stable contact resistance, high strength and high elasticity, and is often used as resistance and strain elasticity of electronics, electrical instruments, precision potentiometers, motors, etc. , sliding contacts and brushes and other components of the material. [0003] In 1959, Pd-W alloy was first recommended as a precision potentiometer resistance alloy in Germany. In the early 1960s, the former Soviet Union began to use Pd-W20 alloy in potentiometers with large Fc. In the research and promotion of Pd-W20 alloy, it has been effectively and widely used in the former ...
Claims
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IPC IPC(8): C22C5/04C22C1/02C22F1/02C22F1/14C21D9/52B21C37/04
CPCB21C37/047C21D9/525C22C1/02C22C5/04C22F1/02C22F1/14
Inventor 谢明赵通明陈永泰郑旭阳侯攀陈贇尹克江李爱坤方继恒杨有才胡洁琼张吉明刘满门陈松王松王塞北马洪伟段云涛赵上强范小通
Owner SINO PLATINUM METALS CO LTD