典型文献
High-temperature oxidation resistance of ceramic coatings on titanium alloy by micro-arc oxidation in aluminate solution
文献摘要：
Ceramic coatings with aluminum titanuate(Al2TiO5)were prepared on Ti-6Al-4V alloy using pulsed bi-polar Micro-arc Oxidation(MAO).The micromorphology and phase composition of the micro-arc-oxidition ceramic coatings on the titanium alloy were characterized by X-ray powder diffraction(XRD),and scanning electron microscopy(SEM)respectively.The results revealed that the distinct discharge channels and pores on the surface of the micro-arc-oxidition coatings appeared,and these channels were connected in the molten state.The elec-trolyte concentration was inversely proportional to the coating hardness;additionally,the coating prepared with sodium aluminate and sodium hypophosphite concentrations of 4 g/L and 0.5 g/L,respectively,was the most refined after high-temperature sintering,and it was demonstrated to better prevent oxidation.Increasing the electrolyte concentration coincided with fluctuating coating thermal shock resistance.The thermal shock resis-tance of the coating respectively prepared with sodium aluminate,and the sodium hypophosphite concentrations of 4 g/L and 0.5 g/L was the highest.Additionally,the high-concentration coatings performed significantly better than the low-concentration coatings.The oxidation resistance of the coating samples was also significantly higher than that of the TC4 titanium alloy substrate.The adhesion strength between the coatings and the substrate with and without the sealing treatment was measured by tensile tests.Then,the high-temperature oxidation perfor-mance of the coating samples with and without the sealing treatment was investigated by conducting a high-temperature oxidation experiment at a calcinating temperature of 500℃.The results indicate that the adhe-sion strength between the coatings and substrate was high for the as-prepared and sealed micro-arc oxidation samples regardless of whether they were calcined.The high-temperature oxidation mass increase curves for the sealed and unsealed coating samples calcined at 500℃for 500 h revealed that the high-temperature-oxidation-induced mass increase of the coating samples sealed with a sodium silicate solution was much lower than that of the titanium alloy substrate.Thus,the sealing treatment significantly improved the high-temperature oxidation resistance of the TC4 titanium alloy.Lastly,the high-temperature oxidation behavior at 500℃was analyzed and discussed.
文献关键词：
中图分类号：
作者姓名：
Guodong Hao;Daiyue Zhang;Liyan Lou;Longcheng Yin
作者机构：
Mudanjiang Normal University,Mudanjiang,heilongjiang province,157012,PR China;Harbin Institute of Technology,Harbin,heilongjiang province,150001,PR China
文献出处：
引用格式：
[1]Guodong Hao;Daiyue Zhang;Liyan Lou;Longcheng Yin-.High-temperature oxidation resistance of ceramic coatings on titanium alloy by micro-arc oxidation in aluminate solution)[J].自然科学进展·国际材料（英文）,2022(04):401-406
A类：
titanuate,oxidition,hypophosphite
B类：
High,temperature,oxidation,resistance,ceramic,coatings,titanium,alloy,by,arc,aluminate,solution,Ceramic,aluminum,Al2TiO5,were,prepared,6Al,4V,using,pulsed,bi,polar,Micro,Oxidation,MAO,micromorphology,phase,composition,characterized,ray,powder,diffraction,scanning,electron,microscopy,respectively,results,revealed,that,distinct,discharge,channels,pores,surface,appeared,these,connected,molten,state,was,inversely,proportional,hardness,additionally,sodium,concentrations,most,refined,after,sintering,demonstrated,better,prevent,Increasing,electrolyte,coincided,fluctuating,thermal,shock,highest,Additionally,performed,significantly,than,samples,also,higher,TC4,substrate,adhesion,strength,between,without,sealing,treatment,measured,tensile,tests,Then,mance,investigated,conducting,experiment,calcinating,indicate,regardless,whether,they,calcined,mass,increase,curves,unsealed,induced,silicate,much,lower,Thus,improved,Lastly,behavior,analyzed,discussed
AB值：
0.381682
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
