在如此長的充氫時間內，表面是否發生腐蝕損傷？一般來說，只要有1-2質量

During such a long hydrogen charging time, is there any corrosion damage on the surface? Generally speaking, hydrogen embrittlement will occur as long as there is 1-2 ppm by mass of H2. The author should explain why so much hydrogen needs to be introduced? At the same time, understanding the distribution of hydrogen in the sample is also very meaningful and should be explained.

Does the surface have corrosion damage during such a long hydrogen charging time? In general, hydrogen brittle occurs whenever there is 1-2 mass ppm H2, and the authors should explain why so much hydrogen needs to be introduced. At the same time, it is also meaningful to understand the distribution of hydrogen in the sample, which should be explained.

In such a long hydrogen charging time, is there any corrosion damage on the surface? Generally speaking, as long as there is 1-2 ppm H2, hydrogen embrittlement will occur. The author should explain why it is necessary to introduce so much hydrogen? At the same time, understanding the distribution of hydrogen in the sample is also very meaningful and should be explained.<br>