ABSTRACT The optimisation process of the orthogonal experiment was designed by Taguchi experiment. Nanopores structure was prepared on the surface of stainless steel by anodic oxidation in the nitric acid solution containing sodium chloride and thiourea, and the nanopores were expanded in the solution containing sodium chloride, hydrochloric acid and sulfuric acid. The range and variance analysis results demonstrated that when the anodising process parameters were nitric acid concentration 90 mL L−1, thiourea concentration 3.5 g L−1, sodium chloride concentration 20 g L−1, oxidation time 120 s, oxidation voltage 5.0 V, and expanding time 50 s, a nanopore structure with an average porosity of 36.75% was prepared stably on the surface of stainless steel. Using the bonding strength of polymer–metal assembly as a testing index, the stably and repeatability of the optimal process parameters were verified by injection moulding and tensile tests.

中文翻译：

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不锈钢表面纳米孔制备工艺最佳阳极氧化参数的实验研究

摘要 正交试验的优化过程由田口试验设计。在含有氯化钠和硫脲的硝酸溶液中通过阳极氧化在不锈钢表面制备纳米孔结构，并在含有氯化钠、盐酸和硫酸的溶液中使纳米孔膨胀。极差和方差分析结果表明，当阳极氧化工艺参数为硝酸浓度90 mL L-1、硫脲浓度3.5 g L-1、氯化钠浓度20 g L-1、氧化时间120 s、氧化电压5.0 V、膨胀时间为50 s，在不锈钢表面稳定制备出平均孔隙率为36.75%的纳米孔结构。以聚合物-金属组件的结合强度为检测指标，