“NiSn” — A nanostructured compound

Abstract

The recent finding that “NiSn” is composed of Ni3Sn2 with additions of Ni3Sn4 and a Sn(II) compound, SnO or Sn(OH)2, permits to develop a refined model of its structure and stability. The mean grain diameter was determined by STM (15 nm) with a rather small variance. Electrode potentials could be measured in a fused salt mixture of SnCl2 and KC1 between 240 and 300°C. Their evolution with time was consistently interpreted by assuming a solid state separation of Ni3Sn4 from the Ni‐deficient metastable phase Ni3‐δSn2. This model is in good agreement with earlier results of excess enthalpies and XRD changes measured during the recrystallization process.

Tin based alloys for lithium ion batteries

“…1 and corresponds to a hexagonal Ni-As structure [12]. According to the Scherrer formula [13], the average value of the crystallite size is close to 25 nm which is consistent with the fact that NiSn deposits are nanostructured compounds [14]. However, the size of the grain observed by scanning electron microscopy (SEM) shown in Fig.…”

Control of Ni–Sn interfacial reactions through reactant design

“…Fig. 1 to form in co-deposited films over a wide composition range, but it is not part of the equilibrium phase diagram [13][14][15][16][17][18]. Several different investigators have explored the reaction of different Sn-based solder alloys with nickel films as the sequence of phase formation that occurs when the solder reacts with the contacts and the resulting morphology has pronounced effects on the resulting electrical and mechanical properties [1,3,10,11,[19][20][21][22][23][24][25][26][27][28].…”