The effect of composition segregation of mold powder produced by spray granulation on the sintering performance

Funian Han; Liang Yu; Guanghua Wen; Xingfang Wang; Fei Zhang; Jiaqi Jia; Shaopeng Gu

Journal of Materials Research and Technology (Sep 2022)

The effect of composition segregation of mold powder produced by spray granulation on the sintering performance

Funian Han,
Liang Yu,
Guanghua Wen,
Xingfang Wang,
Fei Zhang,
Jiaqi Jia,
Shaopeng Gu

Affiliations

Funian Han: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing, 400044, China
Liang Yu: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Electron Microscopy Center of Chongqing University, Chongqing University, Chongqing, 400044, China; Corresponding author.
Guanghua Wen: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing, 400044, China
Xingfang Wang: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing, 400044, China
Fei Zhang: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials, Chongqing University, Chongqing, 400044, China
Jiaqi Jia: College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Electron Microscopy Center of Chongqing University, Chongqing University, Chongqing, 400044, China; Corresponding author.
Shaopeng Gu: College of Metallurgy and Energy, North China University of Science and Technology, Tangshan, 063210, China

Journal volume & issue: Vol. 20
pp. 448 – 458

Abstract

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The composition uniformity of mold fluxes particles produced by spray granulation has an essential influence on its properties. Therefore, in the paper, the distribution of composition in mold fluxes during the heating process and the corresponding effect on the sintering properties of mold flux was comprehensively considered through TG-DSC, XPS, XRF, XRD, ICP, Infrared absorption, SEM-EDS, and sintering measurement. The results showed that: The difference in outward diffusion ability of different raw materials in the granulation process led to the enrichment of Na and C on the surface of mold flux particles. The partial aggregation of Na induced the centralized generation of sintering phase cuspidine (Ca4Si2O7F2) to inhibit the sintering of mold flux, and the sintering of mold flux can be hindered by increasing the particle size of mold flux to adjust the uniformity of mold flux composition.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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