Effect of quenching rate of solution treatment on corrosion resistance and mechanical properties of a novel Na2MoO4@CNT/Al-Zn-Mg-Cu composite

IF 7.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-04-01 Epub Date: 2025-01-05 DOI:10.1016/j.corsci.2025.112688
Jie Yang , Zhengbin Wang , Qing Li , Zhixiang Xiao , Zhenyu Liu , Bolv Xiao , Zongyi Ma , Yugui Zheng
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Abstract

The effect of quenching rate on corrosion and mechanical properties of a novel Na2MoO4@CNT/Al-Zn-Mg-Cu composite is investigated. The results show that the corrosion resistance of this composite is not sensitive to quenching rate, maintaining a low corrosion rate of ∼0.01 mm/y in 0.6 mol/L NaCl solution and the highest resistance to intergranular and exfoliation corrosion. Besides, ultrahigh strength of this composite decreases but the elongation increases greatly with decreasing the quenching rate. The low quenching sensitivity to corrosion results from the formation of protective surface films promoted by surface enrichment of the MoO42- ions spontaneously released from exposed CNTs.
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固溶淬火速率对新型Na2MoO4@CNT/Al-Zn-Mg-Cu复合材料耐蚀性和力学性能的影响
研究了淬火速率对Na2MoO4@CNT/Al-Zn-Mg-Cu复合材料腐蚀性能和力学性能的影响。结果表明,该复合材料的耐蚀性对淬火速率不敏感,在0.6 mol/L NaCl溶液中保持较低的腐蚀速率(~ 0.01 mm/y),对晶间腐蚀和剥落腐蚀具有最高的耐蚀性。随着淬火速率的降低,复合材料的超高强度降低,伸长率显著提高。对腐蚀的低猝灭敏感性是由于从暴露的CNTs中自发释放的MoO42-离子的表面富集促进了表面保护膜的形成。
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来源期刊
Corrosion Science
Corrosion Science 工程技术-材料科学:综合
CiteScore
13.60
自引率
18.10%
发文量
763
审稿时长
46 days
期刊介绍: Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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