Study on properties of MAO/PCL composite coating on ZK60 magnesium alloy

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2025-01-05 DOI:10.1111/ijac.15010

Junwei Yang, Xiaowen Chen, Bin Luo, Song Tang, Wanlin Xie, Defen Zhang

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Abstract

Microarc oxidation technology enhances magnesium alloy surfaces but faces cracks and micropores. Adding C₆H₁₀CaO₆ and Ca(OH)₂ only partially solves this. This study used immersion pulling to create a microarc oxidation/polycaprolactone composite film, examining its properties and degradation. The film transitioned from smooth to porous with calcium and phosphorus deposits. After 56 days, the Ca/P ratio approached the ideal 1.67, matching the biological environment. The polycaprolactone layer thinned in corrosive media, with hydrogen bubbles and film detachment. Surface sediments included Ca₂P₂O₇ and hydroxyapatite (HA), important for biocompatibility. Cell experiments showed superior adhesion and proliferation on the composite film compared to controls. A degradation model revealed the film's protective role during three stages. In summary, the composite film exhibits excellent surface morphology and composition, promotes cell growth, and protects the magnesium alloy substrate during degradation.

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ZK60镁合金MAO/PCL复合涂层性能研究

微弧氧化技术对镁合金表面进行了强化，但也存在裂纹和微孔。加入C6H10CaO6和Ca(OH)2只能部分解决这个问题。本研究采用浸没式拉伸法制备微弧氧化/聚己内酯复合膜，考察其性能和降解情况。薄膜从光滑过渡到多孔，含有钙和磷沉积物。56 d后，Ca/P接近理想的1.67，符合生物环境。聚己内酯层在腐蚀性介质中变薄，出现氢气气泡和膜脱落。表层沉积物包括Ca2P2O7和羟基磷灰石（HA），对生物相容性很重要。细胞实验显示复合膜的粘附和增殖能力优于对照。降解模型揭示了膜在三个阶段的保护作用。综上所述，复合膜具有良好的表面形貌和组成，促进细胞生长，并在降解过程中保护镁合金基体。

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;