No abstract

No abstract

No abstract

The nickel-phosphorus and nickel-boron alloys prepared for oxidation-reduction in the liquid phase are amorphous or perfectly crystallized in their initial form. An atomic diffusion precedes the crystallization of nickel, nickel phosphides or nickel borides in the course of appropriate thermal treatment. The different stages of the structural development of the alloys were followed by DTA and X-ray diffraction. The changes in the electrical conductivities of the same alloys as a function of linearly increasing temperature confirmed the results obtained with the aid of DTA and X-ray diffraction.Les d@6ts chimiques de m~taux repr6sentent une mdthode ~ldgante et peu cofiteuse d'obtention d'alliages amorphes [1][2][3][4][5].Nous pr6parons au laboratoire par oxydo-r6duction en phase liquide des d6p6ts d'alliages binaires Ni-P (6/~ 25 % de phosphore en atomes) et Ni-B (29 et 33.5 % de bore) pulv6rulents ou sous forme de films minces.

No abstract