Results 111 to 120 of about 31,514 (255)

Development of aircraft brake materials [PDF]

open access: yes
The requirements of brake materials were outlined and a survey made to select materials to meet the needs of high temperature brakes. A number of metals and ceramic materials were selected and evaluated in sliding tests which simulated aircraft braking ...
Ho, T. L., Peterson, M. B.
core   +1 more source

Theoretical study of production of unique glasses in space [PDF]

open access: yes
The potential of producing the glassy form of selected materials in the weightless, containerless nature of space processing is examined through the development of kinetic relationships describing nucleation and crystallization phenomena.
Larsen, D. C., Sievert, J. L.
core   +1 more source

Production of mullite fibers [PDF]

open access: yes
Disclosed here is a process for making mullite fibers wherein a hydrolizable silicon compound and an aluminum compound in the form of a difunctional aluminum chelate are hydrolized to form sols using water and an alcohol with a catalytic amount of ...
Sparks, J. Scott, Tucker, Dennis S.
core   +1 more source

Manufacturing of Composites by Pressure Infiltration, Structure and Mechanical Properties [PDF]

open access: yes, 2008
This paper presents the possibility of composite block production by using pressure infiltration technology. This method uses the pressure of an inert gas (usually argon or nitrogen) to force the melted matrix material to infiltrate the reinforcing ...
Dobránszky, János   +2 more
core  

High-temperature durability considerations for HSCT combustor [PDF]

open access: yes
The novel combustor designs for the High Speed Civil Transport will require high temperature materials with long term environmental stability. Higher liner temperatures than in conventional combustors and the need for reduced weight necessitates the use ...
Jacobson, Nathan S.
core   +1 more source

Environmentally Friendly Pervious Concrete for Treating Deicer-Laden Stormwater: Phase II [PDF]

open access: yes, 2018
In Phase I of this project, graphene oxide (GO)-modified pervious concrete was developed using coal fly ash as the sole binder. The primary objectives of Phase II of this project were (1) to evaluate the stormwater infiltration capacity of GO-modified ...
Shi, Xianming, Xu, Gang
core  

Silicon-on ceramic process: Silicon sheet growth and device development for the large-area silicon sheet task of the low-cost solar array project [PDF]

open access: yes
The technical feasibility of producing solar-cell-quality sheet silicon to meet the Department of Energy (DOE) 1986 overall price goal of $0.70/watt was investigated. With the silicon-on-ceramic (SOC) approach, a low-cost ceramic substrate is coated with
Grung, B. L.   +4 more
core   +1 more source

Cooling slope casting to obtain thixotropic feedstock [PDF]

open access: yes, 2007
Thixoforming, and related semi-solid processing routes for metallic alloys, require feedstock with a non-dendritic microstructure in the semi-solid state.
Atkinson, H.V.   +2 more
core  

High voltage electrical insulation coating for refractory materials [PDF]

open access: yes, 1972
Formula and process have been developed for coating refractory metal surfaces with high voltage electrical insulation for use at temperatures to 600 C. Coatings were specifically developed as an insulation for the surface of a perforated, molybdenum, ion-
Lent, W. E.
core   +1 more source

Effect of Fe2O3 on Compressive Strength and Microstructure of Porous Acicular Mullite

open access: yesCeramics
Porous acicular mullite was fabricated at 1300 °C starting from Al2O3 and mixture of SiO2 and MoO3 obtained by previous oxidation of waste MoSi2. It was found that the presence of MoO3 favors formation of acicular (prism-like) mullite grains with sharp ...
Mia Omerašević   +4 more
doaj   +1 more source

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