| 摘要 |
<p>Tin-free steel plate with excellent paint adherability, which has a metallic chromium layer and a chromium oxide layer on a steel plate, said chromium oxide layer being controlled so that it has an I580/I580 + I660 value of 0.50 or more (wherein I580 stands for transmittance of infrared absorption spectra, as measured accorcing to Fourier transform infrared spectroscopy, corresponding to an ol bond and I660 stands for transmittance corresponding to an oxo bond). </p> |
