Engineering topics
Publications and source records attributed to Bartlett, R. W..
Simple chemical process makes synthetic cryolite by utilizing byproducts of one kind of silicon production process. Potential result of commercialization could be economic benefit to silicon industry or to aluminum industry, in which cryolite is used as flux.
Process reacts alumina hydrate with HF and NaF from silicon-production process. Cryolite is produced by adding reaction step to process that makes high-purity silicon from fluorosilicic acid. New extended process has been demonstrated in laboratory and could be used in commercial plants.
A process was developed for the economic production of high purity Si from inexpensive reactants, based on the Na reduction of SiF4 gas. The products of reaction (NaF, Si) are separated by either aqueous leaching or by direct melting of the NaF-Si product mixture. Impurities known to degrade solar cell performance are all present at sufficiently low concentrations so that melt solidification (e.g., Czochralski) will provide a silicon material suitable for solar cells.
Documentation for the Aircraft Noise Prediction Program as of release level 01/00/00 is presented in a manual designed for programmers having a need for understanding the internal design and logical concepts of the executive system software. Emphasis is placed on providing sufficient information to modify the system for enhancements or error correction. The ANOPP executive system includes software related to operating system interface, executive control, and data base management for the Aircraft Noise Prediction Program. It is written in Fortran IV for use on CDC Cyber series of computers.
Induction plasma heating techniques used to calcinate pigment particles for thermal control coatings
Apparatus for refractory single crystal fusion growth at high temperature using arc melting
Feasibility studies for growing refractory metal carbides single crystals from melts and liquid solutions
Growth parameters for refractory carbide single crystals
Growth parameters for hafnium carbide/tantalum carbide single crystals
Growth parameters for refractory carbide single crystals
Growth parameters for refractory carbide single crystals
Growth parameters for refractory carbide single crystals
Crystal growth experiments to explore influence of atmospheric compositions, during melting, on crystal stochiometry emphasizing determination of tantalum solubility
Growth parameters for refractory tantalum carbide single crystals
Growth parameters for refractory carbide single crystals