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Solids Control in Sludge Pretreatment

Description: Sludge pretreatment will likely involve washing, followed by caustic or acidic leaching and washing of sludge residues after leaching. The principal goal of pretreatment is to obtain a low-volume high-activity waste stream and a high-volume low-activity waste stream. Also, some waste constituents such as chromium and phosphate can be included in glass formulations only at very low concentrations; therefore, it is desirable to remove them from high-level waste streams. Two aspects of sludge trea… more
Date: December 31, 1997
Creator: Beahm, E.C., Weber, C.F., Hunt, R.D., Dillow, T.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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FUNCTIONALY GRADED ALUMINA/MULLITE COATINGS FOR PROTECTION OF SILICON CARBIDE CERAMIC COMPONENTS FROM CORROSION

Description: The main objective of this research project is the formulation of processes that can be used to prepare compositionally graded alumina/mullite coatings for protection from corrosion of silicon carbide components (monolithic or composite) used or proposed to be used in coal utilization systems (e.g., combustion chamber liners, heat exchanger tubes, particulate removal filters, and turbine components) and other energy-related applications. Mullite will be employed as the inner (base) layer and th… more
Date: October 1, 1998
Creator: SOTIRCHOS, PROF. STRATIS V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion protection of metallic waste packages using thermal sprayed ceramic coatings

Description: Ceramic coated carbon steel coupons were corrosion tested in water with dissolved salts to simulate exposure to evaporation concentrated groundwater in an underground nuclear repository. Metallography revealed no corrosion at the ceramic metal interface of dense coatings, even though electrical measurements demonstrated that the coatings were slightly porous. Experimental results and a model to predict corrosion rates influenced by a porous ceramic coating and coating lifetimes are presented
Date: November 1, 1998
Creator: Farmer, J C; Hopper, R W; Shell, T E & Wilfinger, K R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MIL-L-87177 Lubricant Bulletproofs Connectors Against Chemical and Fretting Corrosion

Description: Electrical connectors corrode. Even our best SA and MC connectors finished with 50 to 100 microinches of gold over 50 to 100 microinches of nickel corrode. This work started because some, but not all, lots of connectors held in KC stores for a decade had been destroyed by pore corrosion (chemical corrosion). We have identified a MIL-L-87177 lubricant that absolutely stops chemical corrosion on SA connectors, even in the most severe environments. For commercial connectors which typically have th… more
Date: May 1, 2002
Creator: HANLON, JAMES T.; DE MARQUIS, VIRGINIA K. & TAYLOR, RONALD DEAN
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interfaces of High-Protection Performance Polyaryls-Coated Zinc Phosphated Steels

Description: To evaluate the ability of polyaryl thermoplastic coatings such as polyphenylenesulfide (PPS) and polyphenyletheretherketone (PEEK), to protect zinc phosphate (Zn{center_dot}Ph)-treated steels from corrosion in a wet, harsh environment (1.0 wt % H{sub 2}SO{sub 4}, 3.0 wt % NaCl and 96.0 wt % water at temperature from 250 to 200 C), we exposed them in autoclave to determine performance in heating-cooling cyclic fatigue tests (1 cycle = 12 hr at 200 C + 12 hr at 25 C) for up to 90 cycles. Althoug… more
Date: May 1, 1994
Creator: Sugama, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oxidation-resistant interfacial coatings for fiber-reinforced ceramic composites

Description: A ceramic-matrix composite having a multilayered interfacial coating adapted to protect the reinforcing fibers from long-term oxidation, while allowing these to bridge the wake of advancing cracks in the matrix, is provided by selectively mismatching materials within adjacent layers of the interfacial coating, the materials having different coefficients of thermal expansion so that a low toughness interface region is created to promote crack deflection either within an interior layer of the mis… more
Date: April 22, 1999
Creator: Lara-Curzio, Edgar; More, Karren L. & Lee, Woo Y.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Construction integrity assessment report (ETN-98-0005) S-Farm overground transfer (OGT) system valve pit 241-S-B to valve pit 241-S-D

Description: The S-Farm overground transfer (OGT) line will bypass the existing line(s), between valve pits 241-S-B and 241-S-D that no longer meet system requirements. The new OGT line will provide a waste transfer pipeline between these valve pits in support of saltwell pumping activities. The length of the OGT line is approximately 180 ft from pit to pit. The primary pipe is nominal 1-in. diameter stainless steel (SST) braided Ethylene-propylene Diene Monomer (EPDM) hose. The encasement pipe is a nominal… more
Date: August 12, 1999
Creator: HICKS, D.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THE LEAD-BISMUTH EUTECTIC

Description: Available information on the liquid lead-bismuth eutectic is reviewed. A compilation of physical, thermodynamic, and nuclear properties is included. Corrosion, corrosion inhibition, and handling of the eutectic are discussed. (R.J.S.)
Date: July 7, 1961
Creator: Stachura, S.J. & Burnet, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Issues for conversion coating of aluminum alloys with hydrotalcite

Description: Hydrotalcite coatings on aluminum alloys are being developed for corrosion protection of aluminum in aggressive saline environments. Coating bath composition, surface pretreatment, and alloying elements in aluminum all influence the performance of these coatings during salt spray testing. The coating bath, comprised of lithium carbonate, requires aging by dissolution of aluminum into the bath in order to grow corrosion resistant coatings. Coatings formed in non- aged baths do not perform well i… more
Date: December 1, 1993
Creator: Drewien, C. A. & Buchheit, R. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Conducting polymers as corrosion resistant coatings

Description: Although the majority of top coatings used for corrosion protection are electrically insulating, previous workers have proposed using an electrically active barrier for corrosion control. The most effective corrosion resistant undercoatings in use today are based on chromium compounds. Coatings based on other materials will need to replace these coatings by the turn of the century because of environmental and health concerns. For this reason the authors have begun an investigation of the use of… more
Date: September 1, 1994
Creator: Wrobleski, D. A. & Benicewicz, B. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Materials Corrosion and Environmental Effects Laboratory (MCEL)

Description: A new materials corrosion laboratory has been set up, based primarily in the Materials Science Laboratory (MSL) at Los Alamos National Laboratory. The mission of the laboratory is to conduct basic and applied research in order to rapidly evaluate the durability and useful life of materials considered for use in severe environments. The laboratory serves and provides facilities for industry and universities, and researchers from the present and future DOE complex. The primary customers within th… more
Date: September 1, 1994
Creator: Butt, D. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Drill pipe protector development

Description: The Geothermal Drilling Organization (GDO), formed in the early 1980s by the geothermal industry and the U.S. Department of Energy (DOE) Geothermal Division, sponsors specific development projects to advance the technologies used in geothermal exploration, drilling, and production phases. Individual GDO member companies can choose to participate in specific projects that are most beneficial to their industry segment. Sandia National Laboratories is the technical interface and contracting office… more
Date: March 1, 1996
Creator: Thomerson, C.; Kenne, R. & Wemple, R.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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In situ XANES study of the passive film formed on iron in borate buffer and in sodium acetate

Description: The passive film formed on Fe in pH 8.4 borate buffer (0. 1 36 M) over a broad potential range was characterized by in situ XANES (x-ray absorption near edge structure). On stepping the potential to a value between -0.6 V and +0.4 V (MSE), a passive film forms without detectable dissolution. The edge position indicates that the valence state of Fe in the film is 10 {+-} 5% Fe{sup 2+} and 90 {+-} 5% Fe{sup 3+}. Formation of a passive film at potentials between -0.8 V and -0.65 V is associated wi… more
Date: December 31, 1996
Creator: Oblonsky, L.J.; Ryan, M.P. & Isaacs, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Iron Aluminide Weld Overlays for Erosion-Corrosion Resistant Boiler Tube Coatings in Low NOx Boilers

Description: Iron aluminide weld overlays containing ternary additions and thermal spray coatings are being investigated for corrosion protection of boiler tubes in Low NOx burners. The primary objective of the research is to identify overlay and thermal spray compositions that provide corrosion protection of waterwall boiler tubes. In the current phase of work, preliminary corrosion tests were conducted on a binary Fe-Al alloy in multiple complex gases to determine which gases will be used for testing of t… more
Date: May 16, 2000
Creator: Regina, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metal dusting behavior of coatings.

Description: Surface modification by preoxidation and/or by coatings and alternative materials are being examined at ANL to alleviate the metal dusting problem. Oxide coatings have the advantage that they can minimize carbon-producing reactions (by reducing the availability of catalytic surface) and can also act as a barrier to minimize carbon ingress and pitting of the substrate alloy. We have selected in-situ development of oxide scales, pack diffusion of Al or Cr/Si, and thermal spray of FeAl as avenues … more
Date: October 16, 2002
Creator: Natesan, K.; Zeng, Z.; Soppet, W. K. & Rink, D. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High Temperature Akali Corrosion of Dense SiC and Si(3)N(4) Coated with CMZP and Mg-Doped Al(2)TiO(5) in Coal Gas

Description: Si{sub 3}N{sub 4} ceramics possess properties that are attractive for high temperature heat exchanger applications. These properties include high strength, good thermal conductivity and excellent resistance to thermal shock and oxidation. However when subjected to alkaline containing environments, Si{sub 3}N{sub 4} is prone to corrode and eventually loses its properties. Because it was found that oxide ceramics corrode substantially less, they can be used as a coating to protect Si{sub 3}N{sub … more
Date: April 15, 1997
Creator: Thierry, N. & Brown, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion Protection of SiC-Based Ceramics with CVDMullite Coatings

Description: Silicon carbide ceramics are the leading candidate materials for use as heat exchangers in advanced combined cycle power plants because of their unique combination of high temperature strength, high thermal conductivity, excellent thermal shock resistance, and good high temperature stability and oxidation resistance. Ceramic coatings are being considered for diesel engine cylinder liners, piston caps, valve faces and seats, piston rings, and for turbine components such as combustors, blades, st… more
Date: May 1, 1997
Creator: Sarin, V. & Auger, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Instrumentation for the muon based neutrino source.

Description: There are a number of novel instrumentation issues relating to the generation cooling and acceleration of high power muon beams. Specific issues are monitoring the cooling water in the magnet nearest the target to minimize corrosion, monitoring the behavior of the target after the impact of the beam, and following the beam through the cooling accelerator chain. The muon cooling system also produces a number of unique issues such as making beam profile measurements in the presence of large backg… more
Date: July 17, 2001
Creator: Norem, J.; Wang, C.-X. & Solomey, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A review of fundamental coating issues for high temperature composites

Description: This review addresses many of the fundamental issues associated with the use of coatings in high temperature, aggressive, environments with specific emphasis on multi-component composites. A major concern is damage caused by oxygen permeation into matrix cracks causing internal oxidation and attacking along fiber/matrix interfaces. Many prospective coatings that might be used to protect composites are susceptible to hot corrosion, particularly by small vanadate concentrations which can degrade … more
Date: April 1, 1994
Creator: Courtright, E. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low Speed Carbon Deposition Process for Hermetic Optical Fibers

Description: For optical fibers used in adverse environments, a carbon coating is frequently deposited on the fiber surface to prevent water and hydrogen ingression that lead respectively to strength degradation through fatigue and hydrogen-induced attenuation. The deposition of a hermetic carbon coating onto an optical fiber during the draw process holds a particular challenge when thermally-cured specialty coatings are subsequently applied because of the slower drawing rate. In this paper, we report on ou… more
Date: September 29, 1999
Creator: Abramczyk, Jaroslaw; Arthur, Sara E.; Tallant, David R.; Hikansson, Adam S.; Lindholm, Eric A. & Lo, Jie
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Final Technical Report - Recovery Act: Organic Coatings as Encapsulants for Low Cost, High Performance PV Modules

Description: The objective of this project was to evaluate the feasibility of utilizing PPG's commercial organic coatings systems as efficient, modernized encapsulants for low cost, high performance, thin film photovoltaic modules. Our hypothesis was that the combination of an anticorrosive coating with a more traditional barrier topcoat would mitigate many electrochemical processes that are now responsible for the significant portion of photovoltaic (PV) failures, thereby nullifying the extremely high mois… more
Date: December 5, 2011
Creator: Hellring, Stuart; Shao, Jiping & Poole, James
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fabrication of intermetallic coatings for electrical insulation and corrosion resistance on high-temperature alloys

Description: Several intermetallic films were applied to high-temperature alloys (V alloys and 304, 316 stainless steels) to provide electrical insulation and corrosion resistance. Alloy grain growth at 1000 C for the V-5Cr-5Ti alloy was investigated to determine stability of the alloy substrate during coating formation by CVD or metallic vapor processes at 800-850 C. Film layers were examined by optical and scanning electron microscopy and by electron-energy-dispersive and XRD analysis; they were also test… more
Date: November 1, 1996
Creator: Park, J. H. & Cho, W. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field testing results for the strategic petroleum reserve pipeline corrosion control program

Description: Results of two studies conducted as part of the Strategic Petroleum Reserve (SPR) Pipeline Corrosion Control Program are reported. These studies focused on evaluation of rotary-applied concrete materials for internal pipeline protection against the erosive and corrosive effects of flowing brine. The study also included evaluation of liners applied by hand on pipe pieces that cannot be lined by rotary methods. Such pipe pieces include tees, elbows and flanged pipe sections. Results are reported … more
Date: February 1, 1998
Creator: Buchheit, R. G.; Maestas, L. M. & Hinkebein, T. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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