| 摘要 |
A composite plating bath prepared by adding an agent of boron compounds, such as trimethylamine-borane, dimethylamine-borane and sodium borohydride, by an amount of 0.1 to 10 grams/liter, preferably 1 to 8 grams/liter to a usual nickel electroplating bath having an aqueous acidic solution of at least one nickel salt and micron size particles of at least one water-insoluble material.
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