Metal mass block with near-zero magnetic susceptibility and preparation method thereof

By preparing AuPt, AuIr or CuAl alloy materials, and using a vacuum precision suspension smelting furnace to prepare metal mass with near zero magnetic susceptibility, the problems of high magnetic susceptibility and cost of existing materials are solved, and the metal mass with low magnetic susceptibility and low cost are achieved to meet the needs of gravitational wave detection.

CN120591605APending Publication Date: 2025-09-05HARBIN INST OF TECH
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Patent Information

Application Number
CN202510803227.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-16
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

The existing inspection-quality materials have high magnetic susceptibility and expensive precious metal alloys, which are difficult to meet the magnetic disturbance requirements in space gravitational wave detection.

Method used

AuPt, AuIr or CuAl alloy materials are used to prepare metal mass with near-zero magnetic susceptibility under specific conditions through a vacuum precision suspension smelting furnace. The specific steps include weighing metal raw materials, vacuum treatment, smelting and rapid cooling.

Benefits of technology

The magnetic susceptibility of metal mass is significantly reduced, so that its magnetic susceptibility is between 2×10-8m3/Kg and -2×10-8m3/Kg in a spatial environment, which is relatively low in cost, and the magnetic susceptibility tends to zero point, meeting the gravitational wave detection needs.

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Abstract

The invention discloses a metal mass block with near-zero magnetic susceptibility and a preparation method thereof, and belongs to the field of gravitational wave detection. The invention aims to solve the problems that the magnetic susceptibility of the existing quality inspection material is still high, and the price of the used noble metal alloy is high. The metal mass block with the near-zero magnetic susceptibility is an AuPt precious metal mass block, an AuIr precious metal mass block or a CuAl non-precious metal mass block. The preparation method comprises the following steps: 1, weighing; and 2, smelting the alloy by adopting a vacuum precision suspension smelting furnace. The invention is used for the near-zero magnetic susceptibility metal mass block and the preparation thereof.
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