A NiAs/Ni2In-Type Phase Ni1+xSn (0.35<x<0.45) with Incommensurate Occupational Ordering of Ni

Cu-Ni-Sn: A Key System for Lead-Free Soldering

“…Besides a NiAs-type Ni 3 Sn 2 HT-phase there are three corresponding orthorhombic low-temperature (LT) phases, two of which have incommensurate crystal structures. Detailed crystal structure analyses in this region were performed by Leineweber et al [8][9][10][11] The transition between the Ni 3 Sn 2 LT and HT phases is first order, consisting of two eutectoid and two peritectoid reactions in the temperature interval between 295°C and 411°C.…”

Kinetics of ordering in Ni1.50Sn (‘Ni3Sn2’) as revealed by the variation of the lattice parameters upon annealing

“…High-intensity synchrotron and neutron sources as well as the development of position-sensitive/energy-dispersive detector systems in the last [10][11][12][13][14][15][16][17][18][19][20] years led to a considerable increase of the number of reported in-situ powder diffraction studies [1,2].…”

“…[16] for the analysis of the static displacements of the Sn atoms). Below the order-disorder transition temperature low-temperature phases labelled LT, LT' and LT'' are formed [17][18][19])…”

Phase Equilibria in the Ag-Ni-Sn System: Isothermal Sections

“…27 A number of samples were investigated using an Image Plate Guinier Camera (Huber GmbH), and the patterns were analyzed using the ÔTopas 3Õ software (Bruker AXS, Karlsruhe, Germany). Crystal structure data were taken from PearsonÕs Handbook of Intermetallic Phases 28 or from Leineweber et al [13][14][15][16] Samples to be examined by optical microscope and scanning electron microscope (SEM) techniques were embedded in a mixture of 1:2 volume parts of Cu powder and Resinar F (Wirtz/Buehler, Dü sseldorf, Germany). After embedding, we ground the samples with SiC discs with 600 and 1000 mesh and polished them with Al 2 O 3 (1 lm) to obtain a smooth surface.…”

“…Besides an NiAs-type Ni 3 Sn 2 HT phase there are three corresponding orthorhombic LT phases, two of which have incommensurate structures. Detailed crystal structure analyses in this region were performed by Leineweber et al [13][14][15][16] The transition between the three LT phases and the HT phase is of first order, consisting of two eutectoid and two peritectoid reactions.…”