Spectrographically Pure Metals

Methods of preparing spectrographically pure praseodymium salts

An ion-exchange process was developed for the separation of spectrographically pure praseodymium salts in kilogram amounts from commercially available concentrates. The application of either 0.5% or 0.1% citrate solutions as eluting agents was show to result in excellent separations of praseodymium from samarium, neodymium, and lanthanum when the mixed rare earths were eluted from Amberlite IR-...

The Elliott relation in pure metals

Laser-Induced Forward Transfer of Pure Metals

The chemistry of deformation: how solutes soften pure metals.

Solutes have been added to strengthen elemental metals, generating usable materials for millennia; in the 1960s, solutes were found to also soften metals. Despite the empirical correlation between the "electron number" of the solute and the change in strength of the material to which it is added, the mechanism responsible for softening is poorly understood. Using state-of-the-art quantum-mechan...

Fully Implicit, Adaptive Grid Methods for Phase-Field Simulation of Solidification in Pure Metals and Alloys

A fully-implicit numerical method based upon adaptively refined meshes for the simulation of pure materials and binary alloy solidification in 2D is presented. In addition we combine a second-order fully-implicit time discretisation scheme with variable steps size control to obtain an adaptive time and space discretisation method. The superiority of this method, compared to widely used fully-ex...