航空科学技术2025，Vol.36Issue(10)：88-96,9.DOI:10.19452/j.issn1007-5453.2025.10.011
Bi掺杂MAX相材料增强航空聚氨酯涂层耐磨性能研究
Research on Enhancement of Wear Resistance of Aviation Polyurethane Coatings by Bi Doped MAX Phase Nano-Fillers
摘要
Abstract
Under the extreme wear conditions encountered by critical components of aircraft,the development of high wear-resistant coatings holds significant importance for enhancing operational reliability and reducing maintenance costs.This study employs Bi-doped Ti4AlN3 ternary layered nitride materials(MAX phase materials)to reinforce the wear resistance of aerospace polyurethane(PU)coatings,thereby improving their application potential in key aircraft components such as engines,flaps/ailerons,and landing gear.Initially,Bi-doped Ti4AlN3 MAX phase materials(Bi-Ti4AlN3)were successfully synthesized via a chemical method.Subsequently,Bi-Ti4AlN3 was incorporated into the PU coating system at an optimal ratio,and wear-resistant coatings were fabricated using a spray-coating technique.Tribological tests demonstrated that the Bi-Ti4AlN3/PU composite coatings exhibited superior wear resistance compared to pure PU coatings under identical conditions,with a significant reduction in wear rate.Comprehensive characterization through XRD,SEM,EDS,XPS,and Raman spectroscopy revealed that Bi doping effectively optimized the microstructure and electronic structure of Ti4AlN3,thereby enhancing its hardness and wear resistance.Further analysis indicated that the interfacial interactions between Bi-Ti4AlN3 and the PU matrix,involving not only physical bonding but also chemical compatibility and interfacial reactions,played a crucial role in mitigating coating damage during wear processes.It provides novel insights and methodologies for developing high-performance wear-resistant PU coatings,offering substantial implications for expanding the application of PU-based tribological coatings in the aerospace sector.关键词
Bi掺杂/MAX相材料/聚氨酯涂层/耐磨性能/能带结构Key words
Bi doping/MAX phase material/polyurethane coating/wear resistance/band structure分类
航空航天引用本文复制引用
程铭,李文,常伟..Bi掺杂MAX相材料增强航空聚氨酯涂层耐磨性能研究[J].航空科学技术,2025,36(10):88-96,9.基金项目
航空科学基金(2022Z043025001) Aeronautical Science Foundation of China(2022Z043025001) （2022Z043025001）
