多元复合稀土钨电极与钍钨电极的生态设计实践

doi:10.11896/cldb.24030005

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Abstract Tungsten electrode materials are indispensable functional materials in machinery, nuclear power, aerospace and other industries, and are used in processes such as tungsten inert gas welding and plasma cutting. Rare earth tungsten electrodes account for nearly 50% of the tungsten electrode market, in which multiplicity rare earth tungsten electrodes as the main type. In addition, the radioactive thoriated tungsten electrodes still occupy certain share. Although the multiplicity rare earth tungsten electrodes can satisfy the performance requirements of the welding industry and avoid the radioactive pollution of thoriated tungsten electrodes, the production process needs to consume valuable rare earth strategic resources, so it is necessary to measure the comprehensive advantages of the both from the perspective of ecological design. Based on the idea of life cycle assessment (LCA), the eco-design of tungsten electrode material was carried out from three factors of resources, environment and performance. This study established a multi-factor comprehensive decision-making method model based on resources-environment-performance factors and fuzzy matrix theory. The results showed that the rolling process of the multiplicity rare earth tungsten electrodes is superior to the tho-riated tungsten electrodes. Compared to thoriated tungsten electrodes rotary forging process, its environmental load reduced by 37.84%, the resource impact potential reduced by 67.4% during the production phase. The demand of welding application is better than that of thoriated tungsten electrodes, and the comprehensive performance is about 35.50% higher. Considering different eco-design methods and design factors, the ecological implementation effect of multiplicity rare earth tungsten electrodes is superior than that of thoriated tungsten electrodes in the field of tungsten inert gas welding.

Key words： multiplicity rare earth tungsten electrode thoriated tungsten electrode ecological design life cycle assessment

Published: 25 June 2025 Online: 2025-06-19

CLC number:	TF841
	TG422
	X820.3

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	Articles by authors
	YANG Kun
	CHEN Wenjuan
	YANG Jiancan
	GAO Feng
	GONG Xianzheng
	LIU Yu
	SUN Boxue

Cite this article:

YANG Kun,CHEN Wenjuan,YANG Jiancan, et al. Eco-design and Practice of Multiplicity Rare Earth Tungsten Electrodes and Thoriated Tungsten Electrodes[J]. Materials Reports, 2025, 39(12): 24030005-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24030005 OR https://www.mater-rep.com/EN/Y2025/V39/I12/24030005

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