草酸溶液中乙二醇含量对纯铝材阳极氧化膜绝缘性能的影响
|
摘要
目前,对乙二醇是否能改变阳极氧化膜的绝缘性能尚无报道。将乙二醇(EG)加入草酸溶液中对纯铝材阳极氧化,利用现代表面分析技术研究了乙二醇含量对阳极氧化膜相组成、厚度及绝缘性能的影响。结果表明:加入EG之后,氧化膜表面的平整性明显提升,孔洞数量显著降低;氧化膜的孔隙率随EG含量的增大表现为先降低后上升的变化规律;随EG含量的增大氧化膜厚度表现为先增加后减小,而阻挡层的厚度则呈逐渐上升的趋势;随EG含量的上升氧化膜的击穿场强和绝缘性能都表现为先增大后降低;改善氧化膜阻挡层的致密度可以提高氧化膜的绝缘电阻率与击穿场强。
Currently,the influence of ethylene glycol( EG) on the insulativity of anode oxide film has not been reported. In this work,pure aluminum material was anodized in oxalic acid solution with glycol,and the influence of EG addition on the phase composition,thickness and insulation performance of anode oxide film was studied by modern surface analysis technologies. Results showed that after the addition of EG,the flatness of anode oxide film was significantly improved,and the number of holes was also significantly reduced. As the concentration of EG gradually increased,the porosity of anode oxide film firstly presented a change pattern of first decreasing and then increasing. When the EG concentration increased,the film thickness firstly increased and then decreased. Meanwhile,the thickness of the barrier layer of anode oxide film was improved gradually with the addition of EG. Furthermore,with the increase of EG content,the breakdown field strength and insulation performance of oxide films first increased and then decreased. By improving the density of the barrier layer,the insulation resistivity and breakdown field strength of the anode oxide film could be improved.
Currently,the influence of ethylene glycol( EG) on the insulativity of anode oxide film has not been reported. In this work,pure aluminum material was anodized in oxalic acid solution with glycol,and the influence of EG addition on the phase composition,thickness and insulation performance of anode oxide film was studied by modern surface analysis technologies. Results showed that after the addition of EG,the flatness of anode oxide film was significantly improved,and the number of holes was also significantly reduced. As the concentration of EG gradually increased,the porosity of anode oxide film firstly presented a change pattern of first decreasing and then increasing. When the EG concentration increased,the film thickness firstly increased and then decreased. Meanwhile,the thickness of the barrier layer of anode oxide film was improved gradually with the addition of EG. Furthermore,with the increase of EG content,the breakdown field strength and insulation performance of oxide films first increased and then decreased. By improving the density of the barrier layer,the insulation resistivity and breakdown field strength of the anode oxide film could be improved.
引文
[1]穆道斌,金莹,马莒生.铝金属基板的制备及性能[J].稀有金属,2003,27(3):335-338.
[2] LEE J,KIM J,KIM D,et al. Heat dissipation performance of metal-core printed circuit board prepared by anodic oxidation and electroless deposition[J]. Thermochimica Acta,2014,589:278-283.
[3]张庆瑜,赵文军,王平生,等.离子束辅助沉积Al2O3薄膜的微观状态及其物理特性研究[J].真空科学与技术,2003,23(2):123-128.
[4] MARTINEZ-PERDIGUERO J,MENDIZABAL L,MORANTMINANA M C,et al. Electrical insulation and breakdown properties of Si O2and Al2O3thin multilayer films deposited on stainless steel by physical vapor deposition[J]. Thin Solid Films,2015,595(30):171-175.
[5] NIU D,WANG Q,ZHANG C C,et al. Preparation,characterization and application of high-temperature Al2O3insulating film[J]. Surface and Coating Technology,2016,291:318-324.
[6] XUE T,LIANG Z H,ZHANG X N,et al. A metal-insulator-metal electron emitter based on a porous Al2O3film[J].Applied Physics Letters,2015,106(16):163506.
[7]方亮,钟前刚,何建,等.大功率LED封装用散热铝基板的制备与性能研究[J].材料导报B,2011,25(1):130-134.
[8]石绪忠,陈派明,王岳,等. 5A06铝合金阳极氧化和微弧氧化膜绝缘性能研究[J].材料开发与应用,2012,27(1):51-55.
[9] WANG Q T,LONG Y Z,SUN B. Fabrication of highly ordered porous anodic alumina membrane with ultra-large pore intervals in ethylene glycol-modified citric acid solution[J].Journal of Porous Materials,2013,20(4):785-788.
[10]陶杰,陶海军,包祖国,等.有机电解液中钛基材表面Ti O2纳米管阵列生长机制的研究[J].稀有金属材料与工程,2009,38(6):967-971.
[2] LEE J,KIM J,KIM D,et al. Heat dissipation performance of metal-core printed circuit board prepared by anodic oxidation and electroless deposition[J]. Thermochimica Acta,2014,589:278-283.
[3]张庆瑜,赵文军,王平生,等.离子束辅助沉积Al2O3薄膜的微观状态及其物理特性研究[J].真空科学与技术,2003,23(2):123-128.
[4] MARTINEZ-PERDIGUERO J,MENDIZABAL L,MORANTMINANA M C,et al. Electrical insulation and breakdown properties of Si O2and Al2O3thin multilayer films deposited on stainless steel by physical vapor deposition[J]. Thin Solid Films,2015,595(30):171-175.
[5] NIU D,WANG Q,ZHANG C C,et al. Preparation,characterization and application of high-temperature Al2O3insulating film[J]. Surface and Coating Technology,2016,291:318-324.
[6] XUE T,LIANG Z H,ZHANG X N,et al. A metal-insulator-metal electron emitter based on a porous Al2O3film[J].Applied Physics Letters,2015,106(16):163506.
[7]方亮,钟前刚,何建,等.大功率LED封装用散热铝基板的制备与性能研究[J].材料导报B,2011,25(1):130-134.
[8]石绪忠,陈派明,王岳,等. 5A06铝合金阳极氧化和微弧氧化膜绝缘性能研究[J].材料开发与应用,2012,27(1):51-55.
[9] WANG Q T,LONG Y Z,SUN B. Fabrication of highly ordered porous anodic alumina membrane with ultra-large pore intervals in ethylene glycol-modified citric acid solution[J].Journal of Porous Materials,2013,20(4):785-788.
[10]陶杰,陶海军,包祖国,等.有机电解液中钛基材表面Ti O2纳米管阵列生长机制的研究[J].稀有金属材料与工程,2009,38(6):967-971.