Electro plating bath for depositing solid particles dispersed in nickel alloy matrix on sliding surfaces

摘要

The plating bath is prepared by adding one or more boron compounds, such as trimethylamine-borane, dimethylamine-borane, and sodium borohydride, in an amount of 0.1 to 10 g/l, preferably 1 to 8 g/l, to a nickel electroplating bath comprising an aqueous acidic solution of at least one nickel salt containing micron size particles of at least one water-insoluble material, such as Ni-Si3N4, Ni-SiC, or Ni-WC of eutectic composition. The boron compounds produce better hardness and anti abrasion properties.