Gas tungsten arc welding as a method for producing bulk thermoelectric higher manganese silicide materials

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-03-18 DOI:10.1016/j.surfcoat.2025.132058

N. Bouhelal , Y. Mebdoua , M. Benamar , H. Lahmar

引用次数: 0

Abstract

In this study, the Gas Tungsten Arc Welding (GTAW) method was utilized to densify mechanically alloyed higher manganese silicide powder. The results demonstrated that this approach successfully produced dense samples with a density of 5.02 g/cm³, and importantly, there was no observed oxidation, but high tungsten contamination from the welding rod was detected.

Additionally, the sintered samples exhibited excellent electrical conductivity values, reaching approximately 750 S/cm, along with a Seebeck coefficient of 90 μV/K and a power factor of 0.58 mW/mk² at room temperature. These findings highlight the potential of GTAW as an effective and efficient technique for the fabrication of thermoelectric materials, combining strong material properties with practical applicability in energy conversion technologies.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.