对失重法评价后的N80钢片，用少量蒸馏水冲洗，干燥处理后，使用光学接触角测量仪观察水滴在N80钢片表面的接触角，从而得到钢片的表面润湿性。该数据为加入0.3%4-F吲哚嗪衍生物失重法评价后N80钢的接触角评价结果。

The surface wettability of the N80 steel sheets evaluated by the weight loss method was obtained by rinsing the sheets with a small amount of distilled water, drying them, and observing the contact angle of the water droplets on the surface of the N80 steel sheets using an optical contact angle meter.This data is the result of contact angle evaluation of N80 steel after addition of 0.3% 4-F indolizine derivative loss-in-weight method.