Substructures in Nickel grown from the Melt

As part of an investigation into the effect of substrate structure on the nucleation and growth of electro-deposits, it was desired to produce in a metal single crystal of high purity various types of imperfection. ‘Striation’ 1 boundaries and cell boundaries (‘corrugation’ 2 boundaries) were thought to be suitable as the former should give low-angle boundaries (¼°–5°) with little impurity while the latter should illustrate the effect on nucleation of the impurity contained in cell boundaries.