journal article·2025-05Open access

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

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

Abstract

Abstract Microarc oxidation technology enhances magnesium alloy surfaces but faces cracks and micropores. Adding C 6 H 10 CaO 6 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 Ca 2 P 2 O 7 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.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Magnesium Alloys: Properties and Applications · Bone Tissue Engineering Materials · Corrosion Behavior and Inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu Sichuan China

School of New Energy and Materials Southwest Petroleum University Chengdu Sichuan China

Funding

National Natural Science Foundation of China

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