TiAlBN coatings have been deposited by electron beam (EB) evaporation from a single TiAlBN material source onto AISI 316 stainless steel substrates at a temperature of 450C and substrate bias of -100 V. The stoichiometry and nanostructure have been studied by x-ray photoelectron spectroscopy, x-ray diffraction and transmission electron microscopy. The hardness and elastic modulus were determin...

High strength aluminum alloys, especially those containing zirconium, are historically difficult to grain refine. Early efforts by Alcoa indicated that the addition of lithium to these alloys increases difficulty with grain refinement. Although grain refining of alloys 2090 and 2091 was possible, consistent results were not obtained. Statistically-designed experiments were used to quickly ident...

This study has explored numerous physical properties of CaPd$_3$Ti$_4$O$_{1}$2 (CPTO) and CaPd$_3$V$_4$O$_{12}$ (CPVO) quadruple perovskites employing the density functional theory (DFT) method. The mechanical permanence these two compounds was observed by Born stability criteria as well. band structure CPTO reveals a 0.88 0.46 eV direct narrow gap while using GGA-mBJ GGA-PBE potentials, respec...

The microstructural evolution of Ni-20 pct Cr wires was studied during pack cementation where Al and Ti, with and without prior cementation with Mo, are deposited to the surface of the NiCr wires and subsequently homogenized in their volumes. Mo deposition promotes the formation of Kirkendall pores and subsequent co-deposition of Al and Ti creates a triple-layered diffusional coating on the wir...

Large-area transmission dynodes were fabricated by depositing an ultra-thin continuous film on a silicon wafer with 3-dimensional pattern. After removing the silicon, corrugated membrane enhanced mechanical properties was formed. Mechanical materials, such as this membrane, are engineered to improve its strength and robustness, which allows it span larger surface in comparison flat membranes wh...