亜硫酸金アンモニウム浴からの電析物 [in Japanese] Ammonium Gold Sulfite Bath Deposits [in Japanese]
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We studied sodium and ammonium gold sulfites as gold salt in a 45°C bath, and compared hardness.<br>Conventional sodium gold sulfite bath deposits have a Vickers hardness of about 110Hv at 45°C.<br>Deposits in an ammonium gold sulfite bath containing 200g/L of ammonium sulfite monohydrate had a Vickers hardness of about 90Hv at the same bath temperature.<br>Ammonium gold sulfite bath deposits had a fully bright appearance free of metallic additives.
- Jitsumu Hyomen Gijutsu
Jitsumu Hyomen Gijutsu 49(2), 173-175, 1998-02-01
The Surface Finishing Society of Japan