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Palladium molybdenum precision resistance alloy and preparing method thereof

A technology of precision resistance, palladium-molybdenum alloy, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve problems such as no literature reports

Active Publication Date: 2019-11-15
SINO PLATINUM METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At home and abroad, there is no literature report on the performance and preparation of palladium-molybdenum alloys with Mo content greater than 30% as precision resistance materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Each component of the alloy is formulated according to the mass percentage of 31% Mo, 3% Cr, 2% Zr, 1% Y, and the rest of Pd; it is melted with a high-purity zirconia crucible and a high-frequency induction furnace. Vacuum to 0.4×10 -4 Pa, filled with high-purity argon (99.999%, volume fraction) to positive pressure, the alloy should be fully degassed in the molten state to increase the density of the ingot, and the melt is overheated at 150°C and cast into a crystallization mold; after forging at 1300°C , the pass deformation is 10%, forged to Φ5.0mm; the drawing pass deformation is 8%, the total deformation is 80%; the intermediate annealing adopts 1200 ℃ holding time for 50 minutes, and the furnace is quickly water-cooled; the fine drawing pass deformation is 8% , The total deformation is 90%, drawn into a wire with a diameter of Φ0.030mm; a short-range orderly transformation heat treatment is carried out at 600°C for 60 minutes and slowly cooled in the furnace. Pro...

Embodiment 2

[0020] Each component of the alloy is formulated according to the ingredients of 33% Mo, 2% Cr, 1% Zr, 0.5% Y, and the balance of Pd; it is melted with a high-purity zirconia crucible and a high-frequency induction furnace, and the melting chamber is first evacuated during melting to 0.3×10 -4 Pa, filled with high-purity argon (99.999%, volume fraction) to positive pressure, the alloy should be fully degassed in the molten state to increase the density of the ingot, and the melt is overheated at 180°C and cast into a crystallization mold; after forging at 1400°C , the deformation of the pass is 9%, forging to Φ4.9mm; the deformation of the drawing pass is 8%, and the total deformation is 70%; the intermediate annealing adopts 1200°C holding time of 60 minutes for rapid water cooling; the deformation of the fine drawing pass is 7% , The total deformation is 80%, drawn into a wire with a diameter of Φ0.032mm; a short-range orderly transformation heat treatment is carried out at ...

Embodiment 3

[0022] Each component of the alloy is formulated according to the ingredients of 36% Mo, 1% Cr, 0.5% Zr, and the balance of Pd; it is melted with a high-purity zirconia crucible and a high-frequency induction furnace, and the melting chamber is first evacuated to 0.1×10 -4 Pa, filled with high-purity argon (99.999%, volume fraction) to positive pressure, the alloy should be fully degassed in the molten state to increase the density of the ingot, and the melt is overheated at 200°C and cast into a crystallization mold; after forging at 1450°C , the pass deformation is 9%, forging to Φ4.9mm; the drawing pass deformation is 8%, the total deformation is 70%; the intermediate annealing adopts 1200 ℃ holding time for 70 minutes, and the rapid water cooling is adopted; the fine drawing pass deformation is 6% , The total deformation is 80%, drawn into a wire with a diameter of Φ0.032mm; a short-range orderly transformation heat treatment is carried out at 750°C for 60 minutes and slowl...

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Abstract

The invention discloses a palladium molybdenum precision resistance alloy and a preparing method thereof. Chemical components of the alloy comprise, by mass, 30-40% of Mo, 0.5-6% of M (at least one ofZr, Cr and Y), and the balance Pd. Cast ingots are prepared through high-frequency induction smelting, and a finished product is prepared through the procedures of high-temperature forging, short-range order transition heat treatment and the like. The alloy has high specific resistance and tensile strength, a low temperature coefficient of resistance, high oxidation resistance and high abrasive resistance, is a precision resistance alloy material with good comprehensive performance, and has wide application prospects in the cutting-edge technical fields of computer technology, aerospace and aviation, and the like.

Description

technical field [0001] The invention relates to a palladium-molybdenum precision resistance alloy and a preparation method thereof, belonging to the field of metal materials. Background technique [0002] Precious metal precision resistance alloys are widely used in the production of highly stable precision potentiometers and resistors, and have become indispensable key materials in the fields of electronics, telecommunications, electrical engineering and instrumentation. [0003] With the rapid development of modern science and technology, especially the development of cutting-edge science and technology such as electronic computing technology, aerospace, aviation, navigation and weapons, higher and higher requirements are put forward for precision resistance materials. The general requirements are "high resistance, High reliability, high precision, high wear resistance, long life". It has been found that palladium alloys containing a small amount of transition metals W, V...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/04C22C1/02C22F1/14C21D9/00C21D9/52
CPCC21D9/0075C21D9/525C22C1/02C22C5/04C22F1/14
Inventor 尹俊美刘毅张国全武海军浦恩祥郝玉洁戴华万吉高
Owner SINO PLATINUM METALS CO LTD
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