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| What is the reason of oxidation for pcb immersion gold? |
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Gold does not substantially oxidized in air, so-called oxidation should be two phenomena,
one of which is the surface contamination, thereby causing the color change is determined that the oxidation,for this part,as long as to prevent foreign matter contamination.
the second is the coating surface is not complete,the internal nickel or copper oxide remain on the surface, this part of the immersion gold must be done to improve for reference only.
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