CAJ | 학술논문

实验研究电解液温度、草酸浓度、草酸-硫酸混酸浓度、电流密度及膜层厚度等因素对阳极氧化铝膜的抗电强度的影响.结果表明,随生长条件不同,阳极氧化铝膜的抗电强度在50~120 V/μm范围内变化.其中,电解液温度对抗电强度影响大,降低电解液温度有利于抗电强度的提高;电流密度对抗电强度的影响存在最佳值特征,低于该值时,氧化终止电压低,随之膜层抗电强度低,高于该值时,氧化电压随电流密度非线性上升,热功耗过大导致实际氧化温度上升,抗电强度降低;草酸电解液制备膜层的抗电强度高,并随草酸浓度上升而提高,微量硫酸添加均会导致抗电强度的下降;抗电强度随膜层厚度增加呈现先上升后下降的特征.
실험연구전해액온도、초산농도、초산-류산혼산농도、전류밀도급막층후도등인소대양겁양화려막적항전강도적영향.결과표명,수생장조건불동,양겁양화려막적항전강도재50~120 V/μm범위내변화.기중,전해액온도대항전강도영향대,강저전해액온도유리우항전강도적제고;전류밀도대항전강도적영향존재최가치특정,저우해치시,양화종지전압저,수지막층항전강도저,고우해치시,양화전압수전류밀도비선성상승,열공모과대도치실제양화온도상승,항전강도강저;초산전해액제비막층적항전강도고,병수초산농도상승이제고,미량류산첨가균회도치항전강도적하강;항전강도수막층후도증가정현선상승후하강적특정.
The influences of anodizing parameters on the dielectric strength(DS) of AAO film were investigated,including the temperature of electrolyte,the concentration of oxalic acid,the concentration of mixed oxalic acid and sulfuric acid,the density of anodizing current and the thickness of the AAO film. The results show that the DS of AAO varies between 50 120 V/μm depending on the anodizing parameters. The oxidized temperature had dramatic influence on DS. The lower the temperature of electrolyte is ,the higher the DS is.There is an optimum current density,if lower than the current density,the ending voltage is low, therewith a low DS;if higher,the voltage increases nonlinearly,and thereafter the thermal dissipation results in a low DS. Oxalic acid as electrolyte can give a high DS,trace sulfuric acid addition results in DS decreasing quickly. As the thickness of AAO increase,the DS will increase first and then decrease.