Mg-Gd-Y-Zr镁合金上磷酸盐化学转化涂层成核动力学的调整:预处理和有机添加剂的影响

IF 15.8 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Journal of Magnesium and Alloys Pub Date : 2025-01-01 DOI:10.1016/j.jma.2023.09.037

Siyu Sun , Peng Zhou , Yan Chen , JinTao Xiao , Jingli Sun , Yong Yuan , Tao Zhang , Fuhui Wang

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引用次数: 0

摘要

为了获得具有较强防护性和致密结构的磷酸盐转化涂层，本文对Mg-Gd-Y-Zr镁合金上的磷酸盐化学转化涂层的成核动力学进行了调整。提出了一种预处理工艺，并加入有机添加剂，以提高界面离子生成量(Jsp)，提高σ，降低临界离子生成量(JC,sp)。结果表明，裸合金在磷酸盐浴中预处理可以提高MgHPO4 / MnHPO4的离子生成量。苯扎氯铵的加入可以中和晶体的电荷，从而促进成核动力学。因此，可以得到更致密、更有保护作用的转化涂层。

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Tuning the nucleation kinetics of phosphate chemical conversion coating on Mg-Gd-Y-Zr magnesium alloy: The effect of pretreatment and organic additive

In order to obtain a more protective phosphate conversion coating with a denser architecture, the nucleation kinetics of phosphate chemical conversion coating on Mg-Gd-Y-Zr magnesium alloy was tuned in this work. A pretreatment process was proposed and organic additives were incorporated, which aims at increasing the ionic produce (J_sp) at the interface for increasing σ, and decreasing the critical ionic product (J_C,sp), respectively. Results prove that the pretreatment of bare alloys in a phosphate bath could increase the ion products of MgHPO₄ / MnHPO₄. The addition of benzalkonium chloride could neutralize the charges of crystals, and in turn promote the nucleation kinetics. A denser and more protective conversion coating could consequently be obtained.

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来源期刊

Journal of Magnesium and Alloys Engineering-Mechanics of Materials

CiteScore

20.20

自引率

14.80%

发文量

审稿时长

59 days

期刊介绍： The Journal of Magnesium and Alloys serves as a global platform for both theoretical and experimental studies in magnesium science and engineering. It welcomes submissions investigating various scientific and engineering factors impacting the metallurgy, processing, microstructure, properties, and applications of magnesium and alloys. The journal covers all aspects of magnesium and alloy research, including raw materials, alloy casting, extrusion and deformation, corrosion and surface treatment, joining and machining, simulation and modeling, microstructure evolution and mechanical properties, new alloy development, magnesium-based composites, bio-materials and energy materials, applications, and recycling.