We're working with a piece of 17-4 PH stainless steel which is annealed. We had applied one coat of metal containing hydrogenated amorphous carbon film to the steel. The vendor then, without consenting us, coated the steel again; but this time with a hydrogenated amorphous carbon film (containing no metal).
My question is, by them doing this, will the two layers of film actually bond to each other? If so, how apt will the bond be to chipping?
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