Molybdenum-based rare earth oxide powder metallurgical alloy wafer and preparing method thereof

Abstract

The invention discloses a molybdenum-based rare earth oxide powder metallurgical alloy wafer and a preparing method thereof. The method adopts material blending technology of directly mixing three types of rare earth oxide powder in a high proportion into pure molybdenum powder, and employs characteristics of rare earth elements such as long big linkage grains, anti-sag performance and good creep performance and the characteristic that the rare earth element can exert strong dispersion strengthening effects and wrapping effects after adding and compounding to effectively improve the recrystallization temperature of molybdenum and improve the mechanical physical properties of the molybdenum-based alloy material. The method adopts preparing process procedures such as ultrasonic solid phase homogenizing and blending, low-temperature flexible isostatic pressing forming, step-by-step continuous sintering shaping, stagewise multi-pass rolling, and fine processing and grinding, and mating special technical equipment and execution process technical parameters. The method has the characteristics of advanced technology, complete configuration, reliable operation and low cost, and can prepare a molybdenum-based rare earth oxide powder metallurgical alloy wafer with excellent technical performance and high and fine surface quality.

Description

technical field [0001] The invention relates to a non-ferrous metal alloy material, in particular to a molybdenum-based rare earth powder metallurgy alloy disc and a preparation method thereof. technical background [0002] Molybdenum discs, because of their high melting point, still have high strength and hardness under high temperature conditions, can still maintain excellent electrical conductivity and heat transfer, and have excellent stability, and are widely used in aerospace, national defense and military industries , metallurgy, electric power, chemical industry, electronics, machinery and other production technology fields, especially in high-power emission tubes, high-voltage and high-current thyristors and rectifiers, high-temperature thermocouples and their protection tubes, high-temperature electric furnace heat shields, special electric light sources, etc. In technical products, it is a necessary basic functional material. [0003] The development and research...

AI Technical Summary

Problems solved by technology

However, looking at the current technical status of the molybdenum wafer industry in our country, there are obvious deficiencies or weaknesses in at least four aspects: material ratio, homogeneous mixing, billet forming, and special technical equipment.

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