In contrast to conventional electrolytic processes, electroless nickel plating does not use an electric current to produce a deposit, but operates chemically.
Deposition will only take place in the presence of a catalyst. The properly prepared basis metal acts as the initial catalyst and since the deposit itself is also a catalyst, the reaction continues autocatalytically. Thus varying deposit thickness via electroless nickel plating can be obtained as long as the reacting chemicals are replenished.
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