ATMP改善铝阳极氧化膜高温耐水合特性的研究

Use of ATMP to improve high-temperature hydration resistance of anodized aluminum oxide films

采用浸渍-热处理法,用表面处理剂氨基三甲叉膦酸(ATMP)对铝阳极氧化膜进行表面处理,研究了ATMP溶液的浓度、温度以及热处理温度对氧化膜升压时间和比容的影响。结果表明:随着热处理温度的升高,氧化膜的升压时间先减小,后延长,400℃时的升压时间最短,氧化膜的比容变化率随热处理温度的升高逐渐减小;溶液的温度和浓度对氧化膜的升压时间影响不明显,但对氧化膜的比容及其比容变化率有较大的影响。FTIR分析证实铝阳极氧化膜采用此方法进行表面处理后,有效地改善了其高温耐水合特性。

Adopting dipping-annealing method, anodized aluminum oxide films were treated with ATMP solution. The influences of technological parameters, including concentration, temperature and annealing temperature on the high-temperature hydration resistance and the specific capacitance of oxide films were studied. The results show that, as the annealing temperature is increasing, the rise time of oxide films drops first and then increases instead, which has the lowest rise time at 400℃, and the change percentage of specific capacitance of oxide films decreases. The concentration and temperature of ATMP solution have little influence on the rise time, but obvious influence on the specific capacitance and the change percentage of specific capacitance. FTIR analysis confirmed that the hydration resistance of anodic oxide films annealed at 400℃ was improved greatly.