摘要
Five samples of chemically desposited Ni-P amorphous alloys were prepared and inves- tigated.In these amorphous alloys there are Ni-P atom groups in which phosphorus and nickel are connected with strong interaction.Nickel atoms and Ni-P groups are deposited in a random manner on the surface of matrix and a quasilayer structure is formed.The spacing between two layers in alloys resembles that in(111)plane in the nickel crystal.Therefore there is a peak at the same position of 2θ=44.4° as that of the(111)reflection of crystalline nickel in the X-ray powder diffraction pat- tern of alloys.However,the dimension of Ni-P groups is different from that of a nickel atom and the atomic arrangement in the layer is in disorder.These result in the space change and there is a distribution of spacing around the average.As a consequence of distribution of spacings,the peak at 2θ=44.4° is broadened and enhanced as the amount of P increases.
Five samples of chemically desposited Ni-P amorphous alloys were prepared and inves- tigated.In these amorphous alloys there are Ni-P atom groups in which phosphorus and nickel are connected with strong interaction.Nickel atoms and Ni-P groups are deposited in a random manner on the surface of matrix and a quasilayer structure is formed.The spacing between two layers in alloys resembles that in(111)plane in the nickel crystal.Therefore there is a peak at the same position of 2θ=44.4° as that of the(111)reflection of crystalline nickel in the X-ray powder diffraction pat- tern of alloys.However,the dimension of Ni-P groups is different from that of a nickel atom and the atomic arrangement in the layer is in disorder.These result in the space change and there is a distribution of spacing around the average.As a consequence of distribution of spacings,the peak at 2θ=44.4° is broadened and enhanced as the amount of P increases.
基金
This research was supported by the National Natural Science Foundation of China.
