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Wear mechanism and wear prevention in coal-fueled diesel engines

Description: The overall objective of this program is to develop the diesel engine and lubricant system design approach that has the highest probability for commercial acceptance. Several specific objectives can also be identified. These objectives include: Definition of the dominant wear mechanisms prevailing in coal-fueled diesel engines; Definition of the specific effect of each coal-related lube oil contaminant; Determination of the potential of traditional engine lubrication design approaches to either… more
Date: June 20, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wear mechanism and wear prevention in coal-fueled diesel engines

Description: The overall objective of this program is to develop the engine and lubricant system design approach that has the highest probability for commercial acceptance. Several specific objectives can also be identified. These objectives include: definition of the dominant wear mechanisms prevailing in coal-fueled diesel engines; definition of the specific effect of each coal-related lube oil contaminant; determination of the potential of traditional engine lubrication design approaches to either solve … more
Date: March 20, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Description: Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral and coal processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Lab… more
Date: September 20, 2007
Creator: Tao, Daniel; Honaker, R. & Parekh, B. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Description: Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Laboratory-s… more
Date: July 20, 2006
Creator: Tao, Daniel & Blue, Craig A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GAS-PRESSURE BONDING OF FLAT-PLATE FUEL ASSEMBLIES

Description: subscale fiat-plate fuel subassemblies measuring up to 2 by 2 by 20 in., incorporating 16 Zircaloy-2-clad uranium -zirconium fuel plates and 15 coolant channels, were successfully fabricated by the gas-pressurebonding process. Autoclave design, specimen-container configuration, and the design and preparation of specimen components were among the problems studied. Uneven heating of the bonding specimen, caused in part by convective heat transfer, was minimized by developing a special four-elemen… more
Date: January 20, 1959
Creator: Paprocki, S.J.; Hodge, E.S.; Boyer, C.B. & Getz, R.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Hats]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: January 20, 1984, 5:00 p.m.
Duration: 1 minute 49 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Ultracoatings: Enabling Energy and Power Solutions in High Contact Stress Environments through next-generation Nanocoatings Final Technical Report

Description: A review of current commercially available, industrial-grade, low friction coatings will show that interfacial contact pressures nearing 1GPa ({approx}150ksi) inherently limit surface engineering solutions like WC, TiN, TiAlN, and so forth. Extremely hard coatings, then, are often pursued as the principle path, although they too are not without significant limitations. A majority of these compounds are inherently brittle in nature or may not pair well with their mating substrate. In either case… more
Date: March 20, 2012
Creator: Higdon, Clifton B., III
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structural Analysis of the Bottom Head of the Reactor Vessel

Description: The structural integrity of the bottom head of the Hallam Power Reactor vessel is studied, under normal operation and accidental transient conditions. The maximum mechanical stress, "elastic" thermal stress, and cumulative fatigue damage are calculated. It is established that the bottom head will not buckle or wrinkle as a result of frictional forces developed during thermal expansion of the vessel. (T.F.H.)
Date: April 20, 1961
Creator: Sujata, H. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Novel Carbon Films for Next Generation Rotating Equipment Applications

Description: This report describes the results of research performed on a new generation of low friction, wear resistant carbon coatings for seals and bearings in high speed rotating equipment. The low friction coatings, Near Frictionless Carbon (NFC), a high hydrogen content diamondlike carbon, and Carbide Derived Carbon (CDC), a conversion coating produced on the surfaces of metal carbides by halogenation, can be applied together or separately to improve the performance of seals and bearings, with benefit… more
Date: February 20, 2006
Creator: McNallan, Michael; Erdemir, Ali & Gogotsi, Yury
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of attrition resistant iron-based Fischer-Tropsch catalysts

Description: The Fischer-Tropsch (F-T) reaction provides a way of converting coal-derived synthesis gas (CO+H{sub 2}) to liquid fuels. Since the reaction is highly exothermic, one of the major problems in control of the reaction is heat removal. Recent work has shown that the use of slurry bubble column reactors (SBCRs) can largely solve this problem. The use of iron-based catalysts is attractive not only due to their low cost and ready availability, but also due to their high water-gas shift activity which… more
Date: September 20, 2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tribological Properties of Self-assembled Monolayers on Au, SiOx and Si Surfaces

Description: Using interracial force microscopy (IFM), the tribological properties of self-assembled monolayer (SAM) on Si surfaces produced by a new chemical strategy are investigated and compared to those of classical SAM systems, which include alkanethiols on Au and alkylsilanes on SiO{sub x}. The new SAM films are prepared by depositing n-alkyl chains with OH-terminations onto Cl-terminated Si substrates. The chemical nature of the actual lubricating molecules, n-dodecyl, is kept constant in all three t… more
Date: July 20, 2000
Creator: Kim, Hyun I.; Boiadjiev, V.; Houston, Jack E.; Zhu, X. -Y & Kiely, J .D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tribological performance of NFC coatings under oil lubrication[Near Frictionless Carbon]

Description: An increase in engine and vehicle efficiency usually requires an increase in the severity of contact at the interfaces of many critical components. Examples of such components include piston rings and cylinder liners in the engine, gears in the transmission and axle, bearings, etc. These components are oil-lubricated and require enhancement of their tribological performance. Argonne National Laboratory (ANL) recently developed a carbon-based coating with very low friction and wear properties. T… more
Date: January 20, 2000
Creator: Ajayi, O. O.; Alzoubi, M.; Erdemir, A.; Fenske, G. R.; Eryilmaz, O. L. & Zimmerman, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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