The Relationship Between Phosphorus Content and Physical Properties of Electroless Nickel Deposits

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Abstract
The physical properties of electroless nickel deposits are intimately related to their composition. The work presented shows the relationship between deposit hardness, both as-plated and heat-treated and phosphorus content. It is shown that in both cases maximum hardnesses are obtained with deposits of lower phosphorus content. Care must be taken with low phosphorus deposits to avoid over heat- treatment and recommendations for suitable times and temperatures are made.