5 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Federer, J.I."  
Results: 1 - 5
open access

DIFFUSION OF Zr$sup 95$ IN BODY-CENTERED CUBIC IODIDE ZIRCONIUM

Description: Chemically purifled Zr/sup 95/ was used in determining selfdiffusion coefficients in the body-centered cubic phase of iodide zirconium over the temperature range of 900 to 1750 deg C. In order to minimize effects of build-in of the daughter isotope Nb/sup 95/, all heat treatments were completed within 48 hr after the purification. The temperature dependence of the diffusion coefflcients could not be described by the usual Arrhenius-type equation. Instead, apparent values of the frequency factor… more
Date: September 1, 1962
Creator: Lundy, T.S. & Federer, J.I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion of SiC and oxide-composite ceramics by a simulated steam-reformer atmosphere

Description: To achieve higher process efficiency by using pressurized reactants and/or heat transfer fluids, the US DOE is promoting development of high-pressure heat exchanger systems under cost-sharing agreements with industrial contractors. The steam reformer would contain more than 600 tubes. Because the combination of high temperature and pressure differential of 12.7 kg/cm{sup 2} (180 psig) across the tube wall is too severe for metallic tubes, ceramic materials are being considered for reformer tube… more
Date: September 1, 1991
Creator: Federer, J.I.; Kim, H.E. & Moorhead, A.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Deposition of silicon carbide coatings on particles in a fluidized bed using silane and tetramethylsilane: a feasibility study

Description: Deposition of silicon carbide (SiC) coatings from compounds such as methyltrichlorosilane (CH/sub 3/SiCl/sub 3/) results in corrosive chlorine-containing byproducts. The feasibility of depositing coatings from SiH/sub 4/ and Si(CH/sub 3/)/sub 4/, which contain no chlorine, was briefly studied. Coatings of SiC were deposited from Si(CH/sub 3/)/sub 4/ over the temperature range 1025 to 1525/sup 0/C in beds of particles fluidized with either H/sub 2/ or Ar. The densest coatings were deposited at 1… more
Date: March 1, 1978
Creator: Federer, J.I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Construction and testing of a flue-gas corrosion probe

Description: The selection of suitable materials for industrial, waste-heat- recovery systems requires assessment of corrosion of materials in various flue-gas environments. Such assessments involve exposing candidate materials to high-temperature flue gases and analyzing the effects of the exposure conditions. Because corrosion is related to flue-gas chemical composition and temperature, variations in temperature complicate the determination of corrosion rates and corrosion mechanisms. Conversely, a relati… more
Date: August 1, 1990
Creator: Federer, J.I. & McEvers, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen