Engineering topics
Publications and source records attributed to Bacigalupi, R. J..
Method is described for producing tungsten-reinforced tantalum, a material possessing the high temperature strength of tungsten and room temperature ductility and weldability of tantalum. This material is produced by bonding together and overlaying structure of tungsten wires with chemical vapor deposited tantalum.
A network of lithium-filled tungsten heat pipes is being considered as a method of heat extraction from high temperature nuclear reactors. The need for material purity and shape versatility in these applications dictates the use of chemically vapor deposited (CVD) tungsten. Adaptability of CVD tungsten to complex heat pipe designs is shown. Deposition and welding techniques are described. Operation of two lithium-filled CVD tungsten heat pipes above 1800 K is discussed.
A network of lithium-filled tungsten heat pipes is considered as a method of heat extraction from high temperature nuclear reactors. The need for material purity and shape versatility in these applications dictates the use of chemically vapor deposited (CVD) tungsten. Adaptability of CVD tungsten to complex heat pipe designs is shown. Deposition and welding techniques are described. Operation of two lithium-filled CVD tungsten heat pipes above 1800 K is discussed.
Li-filled vacuum-deposited W heat pipes for efficient heat extraction from nuclear reactors, discussing design, fabrication and testing
Fabrication and tests of tungsten reactor pipe and its heating characteristics up to 1900 K
The choice of chemically vapor deposited (CVD) tungsten as material for the heat pipes is based on studies reported by Busse et al. (1970). Aspects of pipe construction are discussed together with wick construction, and heat pipe operation. An auxiliary heater was used to overcome problems during the start of operation in the case of a thermally loaded pipe. Two heat pipes were operated at temperatures up to 1850 K. Annular and channeled wicks were investigated. The design of a cross flow heat exchanger is presented together with the design of a reactor heat pipe life test station.
Lennard-Jones atom interaction potential, calculating adsorption energy of atom onto surface structure of fcc substrate, tabulating adsorption and surface diffusion activation energies
Reactor gamma in-pile effects on thermionic diodes simulated in electron accelerator, noting ion production insufficient to support saturation currents
Reactor gammas effects on thermionic diode output simulated in electron accelerator
Point-kernel computation and experimental measurements of gamma heating effects during thermionic diode irradiation
Interaction energy of single atom adsorption at any point on single crystal planes of bcc structure, using Lennard-Jones potential
Dependence on surface structure for adsorption energy by single atom on body centered cubic substrate
Transparent sphere of polymethylmethacrylate with major zones and poles of cubic crystals is used to make crystallographic visualizations and to interpret Laue X ray diffraction of single cubic crystals.
Surface topography of single crystals of face- centered-cubic, body-centered-cubic, sodium chloride, diamond, and zinc blende structures
Effect of magnetic field on ferromagnetic metal whisker growth
Single crystal iron whiskers grow in alignment with field lines when subjected to magnetic field during growth process