| 摘要 |
<p>Disclosed is a method of surface-roughening an aluminum support comprising the step of electrolytically surface-roughening an aluminum support in an electrolyte solution, supplying an alternating current with an alternating waveform having a positive polarity period and a negative polarity period in one cycle, and comprising arriving at the largest current value from a zero current value in the positive polarity period of one cycle and then falling, followed by rising to a current maximum in one cycle, wherein the time t1, which is required to arrive at the largest current value, has the following relationships: <MATH> <MATH> <MATH></p> |
