PROPERTIES OF ELECTROLESS NI-W-P AMORPHOUS-ALLOYS

This paper describes work performed to determine some of the propertie s of the electroless Ni-W-P amorphous deposits. Phosphorus contents we re varied up to 32 at.%, and the amorphous structure was found to be p resent at phosphorus contents above 5 at.%. Irrespective of P content, all the deposits exhibited excellent adhesion to metallic substrates. The addition of even small amounts of W provided greatly increased ha rdness compared with the plain Ni-P deposits. The wettability properti es of the Ni-W-P deposits were found to be comparable to those of Ni-P and N-B-P deposits but inferior to those of Ni-B deposits. (C) Elsevi er Science Inc., 1996