The influence of rare earth La on properties of lead-based alloy anode for zinc electrowinning

Yi, Tao; Luo, Kun; Chang, Linhui; Chen, Buming; Huang, Hui; He, Yapeng; Guo, Zhongcheng

doi:10.1007/s10008-022-05274-z

Cited by 5 publications

(2 citation statements)

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“…The surface morphology of the lead alloy with RT heat preservation shows some cracks, which was caused by excessive perforation in the corrosion process. In conclusion, the alloy treated with 50°C heat preservation showed the optimal corrosion resistance due to the homogenous microstructure inhibiting the further corrosion [19] . The low-temperature holding treatment is also bene cial for corrosion protection on the surface of the lead alloy.…”

Section: Corrosion Substrate Morphologymentioning

confidence: 88%

“…The coarser grains, and narrower and ner dendritic grain boundaries were conducive to the improvement of the corrosion resistance of the lead alloys [12][13][14][15][16][17][18] . The top, middle and bottom grain size basically tends to be uniformly, which is bene cial for transforming the possible local corrosion in the corrosion process into progressive uniform corrosion, enhancing the corrosion resistance of the alloy [19] . In addition, the more uniform grain size enhanced the strength of the alloy.…”

Section: Metallography Of Pb-ag Alloysmentioning

confidence: 99%

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Microstructure modulation realizing high performance of Pb-Ag alloys by controlled solidification temperature

Zhou,

Yu,

Jiang

et al. 2024

Preprint

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The microstructure of the Pb-Ag alloy is vital to its mechanical, corrosion and electrochemical properties. In this paper, heat preservation mold is used to control the temperature of cast lead alloy, realizing the regulation of the microstructure of Pb-Ag alloy. The effects of the surface microstructure and the Ag distribution on the mechanical, corrosion-resistant and electrochemical properties of lead alloy are investigated. The results show that the heat preservation treatment effectively enhances the longitudinal tissue uniformity of the alloy, and optimizes the distribution of Ag in the alloy. The alloy shows the best comprehensive performance as the heat preservation temperature reaches 50 ℃ due to the uniform size of the metallographic structure and the most uniformly distributed Ag. The low-temperature heat preservation treatment (12 ℃) refines the middle and bottom grains of the alloy and enhances the mechanical properties of the alloy. However, the increased uniform grain size and Ag distribution at the longitudinal level of the alloy led to a decrease in the electrochemical properties and corrosion resistance.

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Section: Corrosion Substrate Morphologymentioning

confidence: 88%