Zinc (Zn) and its alloys have received increasing attention as new alternative biodegradable metals. However, consensus has not been reached on the corrosion behaviour of Zn. As cardiovascular artery stent material, Zn is supposed to contact with plasma that contains inorganic salts and organic components. Protein is one of the most important constitute in the plasma and could adsorb on the material surface. In this paper, bovine serum albumin (BSA) was used as a typical protein. Influences of BSA on pure Zn corrosion in phosphate buffered saline is investigated as a function of BSA concentrations and immersion durations by electrochemical techniques and surface analysis. Results showed that pure Zn corrosion was progressively accelerated with BSA concentrations (ranging from 0.05 to 5 g L⁻¹) at 0.5 h. With time evolves, formation of phosphates as corrosion product was delayed by BSA adsorption, especially at concentration of 2 g L⁻¹. Within 48 h, the corrosion of pure Zn was alleviated by BSA at concentration of 0.1 g L⁻¹, whereas the corrosion was enhanced after 168 h. Addition of 2 g L⁻¹ BSA has opposite influence on the pure Zn corrosion. Furthermore, schematic corrosion behaviour at protein/Zn interfaces was proposed. This work encourages us to think more about the influence of protein on the material corrosion and helps us to better understand the corrosion behaviour of pure Zn.

锌 (Zn) 及其合金作为新的可生物降解金属替代品受到越来越多的关注。然而，关于锌的腐蚀行为尚未达成共识。作为心血管动脉支架材料，Zn应该与含有无机盐和有机成分的血浆接触。蛋白质是血浆中最重要的成分之一，可以吸附在材料表面。在本文中，牛血清白蛋白（BSA）被用作典型的蛋白质。通过电化学技术和表面分析，研究了 BSA 对磷酸盐缓冲盐水中纯 Zn 腐蚀的影响作为 BSA 浓度和浸泡时间的函数。结果表明纯锌腐蚀随着 BSA 浓度（范围从 0.05 到 5 g L ^-1) 在 0.5 小时。随着时间的推移，作为腐蚀产物的磷酸盐的形成被 BSA 吸附延迟，特别是在 2 g L ^-1的浓度下。^{在 48 h 内，BSA 在 0.1 g L -1}浓度下的腐蚀得到缓解，而 168 h 后腐蚀增强。添加2 g L ^-1 BSA 对纯Zn 腐蚀有相反的影响。此外，还提出了蛋白质/锌界面处的腐蚀行为示意图。这项工作鼓励我们更多地思考蛋白质对材料腐蚀的影响，并帮助我们更好地了解纯锌的腐蚀行为。