| 摘要 |
Provided is a stainless steel substrate for a solar cell, the stainless steel substrate including, by mass%, Cr: 9% to 25%, C: 0.03% or less, Mn: 2% or less, P: 0.05% or less, S: 0.01% or less, N: 0.03% or less, Al: 0.005% to 5.0%, Si: 0.05% to 4.0%, and a remainder including Fe and unavoidable impurities, in which an oxide film containing (i) Al 2 O 3 in an amount of 50% or more or containing (i) Al 2 O 3 and (ii) SiO 2 in a total amount of 50% or more is formed on a surface of stainless steel having a composition which contains Al: 0.5% or more and/or Si: 0.4% or more and satisfies the following expression (1).
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒCr+10Si+Mn+Al>24.5€ƒ€ƒ€ƒ€ƒ€ƒ(1) |
