Results 101 to 110 of about 428,015 (228)

Boron carbide thermal conductivity

open access: yes, 1973
The thermal diffusivity of hot-pressed boron carbide pellets was measured at temperatures between 16 and 1400 deg C using a ''flash'' technique. Thermal-conductivity values were calculated from the diffusivity measurements. Empirical porosity correction factors were determined for both properties.
D E Mahagin, J L Bates, D E Baker
openaire   +2 more sources

Locating Si atoms in Si-doped boron carbide: A route to understand amorphization mitigation mechanism

open access: yesActa Materialia, 2018
The well-documented formation of amorphous bands in boron carbide (B4C) under contact loading has been identified in the literature as one of the possible mechanisms for its catastrophic failure.
A. Khan   +12 more
semanticscholar   +1 more source

Metal matrix composite structural panel construction [PDF]

open access: yes, 1983
Lightweight capped honeycomb stiffeners for use in fabricating metal or metal/matrix exterior structural panels on aerospace type vehicles and the process for fabricating same are disclosed.
Bales, T. T.   +2 more
core   +1 more source

Nanoscale elastic strain mapping of polycrystalline materials

open access: yesMaterials Research Letters, 2018
Measuring elastic strain with nanoscale resolution has historically been very difficult and required a marriage of simulations and experiments. Nano precession electron diffraction provides excellent strain and spatial resolution but has traditionally ...
Paul F. Rottmann, Kevin J. Hemker
doaj   +1 more source

Aluminum-titanium hydride-boron carbide composite provides lightweight neutron shield material [PDF]

open access: yes, 1967
Inexpensive lightweight neutron shield material has high strength and ductility and withstands high internal heat generation rates without excessive thermal stress.
Poindexter, A. M.
core   +1 more source

Adhesion, friction and micromechanical properties of ceramics [PDF]

open access: yes
The adhesion, friction, and micromechanical properties of ceramics, both in monolithic and coating form, are reviewed. Ceramics are examined in contact with themselves, other harder materials, and metals.
Miyoshi, Kazuhisa
core   +1 more source

Specifics of Al substitution into boron carbide: A DFT study

open access: yesOpen Ceramics
Boron carbide (B4C), known for its hardness and low density, is prone to local amorphization under high non-hydrostatic loads, limiting its applications.
Oleksandr Vasiliev, Vladyslav Bilyi
doaj   +1 more source

Fillers for improved graphite fiber retention by polymer matrix composites [PDF]

open access: yes
The results of a program designed to determine the extent to which elemental boron and boron containing fillers added to the matrix resin of graphite/epoxy composites prevent the release of graphite fibers when the composites are exposed to fire and ...
House, E. E., Sheppard, C. H.
core   +1 more source

Composite materials research in support of supersonic propulsion systems [PDF]

open access: yes
Two engine components, fan blades and exhaust systems, were selected for composite materials development efforts in support of the supersonic cruise aircraft research (SCAR) engine program.
Signorelli, R. A.
core   +1 more source

Synthesis and Thermal Oxidation Resistance of Boron-Rich Boron-Carbide Material. [PDF]

open access: yesMaterials (Basel), 2023
Iwan S   +4 more
europepmc   +1 more source

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