摘要
采用多指标正交试验,系统研究了氢氧化钠(NaOH)、硅酸钠(Na_2SiO_3)、植酸(C_6H_(18)O_(24)P_6)以及纳米粒子Al_2O_3对镁合金表面复合阳极氧化膜耐蚀性和耐磨性的影响。利用扫描电镜和X射线衍射对优化配方下制备的复合氧化膜的形貌、成分及相组成进行了表征。结果表明,兼具优良耐蚀性和耐磨性的配方为:NaOH:50 g/L,Na_2SiO_3:100 g/L,C_6H_(18)O_(24)P_6:12 mL/L,Al_2O_3:5 g/L。优化配方下制备的复合氧化膜主要由MgO、Mg_2SiO_4和Al_2O_3组成,氧化膜表面连续致密,微孔细小均匀。
The effects of sodium hydroxide （NaOH）, sodium silicate （Na2SiO3）, phytic acid （C6H18O24P6） and Al2O3 nanoparticles on the corrosion resistance and wear resistance of the composite anodic oxide coatings on magnesium alloy were systematically investigated by multi-index orthogonal test. The morphology, chemical composition and phase composition of the compound anodizing coatings prepared under the optimized formula were characterized by SEM and X-ray diffraction. The results show that the optimal formula for excellent corrosion and wear resistance is： NaOH：50g/L,Na2SiO3：100 g/L, C6H18O24P6：12 mL/L, Al2O3：5 g/L. The phase composition under the optimized composite coating is MgO, Mg2SiO4 and Al2O3. The surface of the oxide coating is continuous and compact, and the micro-pores are small and uniform.
出处
《热加工工艺》
CSCD
北大核心
2017年第10期151-154,共4页
Hot Working Technology
基金
重庆市教委科学技术研究项目(KJ1400928)
重庆市教委科学技术研究项目(KJ1601104)
重庆市基础与前沿研究计划项目(cstc2016jcyj A0434)
关键词
多指标正交试验
镁合金
复合阳极氧化
耐蚀性
耐磨性
multi-target orthogonal test
magnesium alloy
composite anodizing
corrosion resistance
wear resistance
