Results 171 to 180 of about 19,927 (215)
Some of the next articles are maybe not open access.
Influence of B4C Content on Flexural Performance of Ni + B4C Microwave Composite Clads
Journal of Materials Engineering and Performance, 2021This study focused on the development of microwave composite cladding of a Ni-based alloy reinforced with varying proportions (wt.%) of B4C such as 0, 5, 10 and 20% on a SS-304 steel substrate. Clads showed metallurgical bonding with the substrate by the partial dilution of the materials.
M. Minhaj, Sunny Zafar
openaire +1 more source
Properties of B4C/Al–B4C composite with a two-layer structure
Materials Research Bulletin, 2013Abstract In order to obtain a material with a promising bulletproof performance, a two-layer structure composite consisting of B4C/Al-B4C was obtained using a two-step method for both hot pressing and infiltration aluminum in vacuum. Before aluminum infiltration the B4C porous layer of the two-layer preform looked like a three-dimensional network of ...
XinYan Yue +3 more
openaire +1 more source
Study of B4C-Fe, B4C-V and B4C-P Thermoelectric Materials made by SPS for MHD Power System
33rd Plasmadynamics and Lasers Conference, 2002$EVWUDFW The electrical conductivity, Seebeck coefficient, and the thermal conductivity of Fe -doped B4C ceramics with several Fe compositions were investigated experimentally. The ceramics specimens were made by SPS apparatus. The figure of merit for the each specimen were calculated using the above experimental results It was found that the values of
Yoshiaki Aoki +9 more
openaire +1 more source
AIP Conference Proceedings, 1991
A classical central force field model is applied to a boron carbide lattice assumed to consist of B11C icosahedra and C‐B‐C chains. The icosahedral carbon is positioned in a polar triangle and is puckered inward by ∼10%. Interaction constants are fitted to account for the observed Raman and IR spectral frequencies in terms of q=0 phonons; isotopic ...
Bartram S. Abbott, Charles L. Beckel
openaire +1 more source
A classical central force field model is applied to a boron carbide lattice assumed to consist of B11C icosahedra and C‐B‐C chains. The icosahedral carbon is positioned in a polar triangle and is puckered inward by ∼10%. Interaction constants are fitted to account for the observed Raman and IR spectral frequencies in terms of q=0 phonons; isotopic ...
Bartram S. Abbott, Charles L. Beckel
openaire +1 more source
Preparation, microstructure and mechanical properties of SiC–SiC and B4C–B4C laminates
Journal of Solid State Chemistry, 2004Silicon carbide and boron carbide are high hardness materials with a low density but, like most ceramics, with a low toughness, that limits their use in various applications. One approach to reinforce ceramic materials consists in using crack deflection by weakening the interfaces in laminar materials.
S Tariolle +4 more
openaire +1 more source
AIP Conference Proceedings, 1991
A self‐consistent‐field, near‐Hartree‐Fock method is applied to study the structure and stability of B4C. Hydrogens serve as bond tie‐offs. Consideration of a large variety of B12C2H16 cluster configurations reveals that one C is highly favored over 0, 2, or 3 in the icosahedron. The C‐B‐C chain is highly favored over all other chains. C’s as far apart
Megan M. Florence, Charles L. Beckel
openaire +1 more source
A self‐consistent‐field, near‐Hartree‐Fock method is applied to study the structure and stability of B4C. Hydrogens serve as bond tie‐offs. Consideration of a large variety of B12C2H16 cluster configurations reveals that one C is highly favored over 0, 2, or 3 in the icosahedron. The C‐B‐C chain is highly favored over all other chains. C’s as far apart
Megan M. Florence, Charles L. Beckel
openaire +1 more source
Reaction interaction in Hf–Nb–B4C and Hf–Nb–B4C–C systems
Electrical MetallurgyThe reaction interaction in the Hf–Nb–B4C and Hf–Nb–B4C–C systems has been studied at a temperature of 1750 °C, isotherm times of 30 and 60 min and residual argon pressure of 100 Pa. A different sequence of interactions between the reactants was established.
A.N. Astapov +2 more
openaire +1 more source
Retention of deuterium implanted into B4C-overlaid isotropic graphites and hot-pressed B4C
Journal of Nuclear Materials, 1992Retention characteristics of two kinds of B4C-overlaid graphites and hot-pressed B4C were investigated. An ion beam of 3 keV D2+ was implanted into the specimens at room temperature. The amount of retained deuteriums was measured as function of the implantation fluence and temperature by elastic recoil detection analysis.
R. Jimbou +5 more
openaire +1 more source
ÖTEKTİKÜSTÜ Al-Si/B4C KOMPOZİTLERDE B4C PARÇACIK ORANININ ELEKTRİKSEL İLETKENLİĞE ETKİSİ
2021Aluminum and aluminum alloys have attracted the attention of researchers for many years dueto their physical properties such as low density, good formability, high corrosion resistance,high electrical and thermal conductivity. In particular, hypereutectic Al-Si powder metallurgyalloys have received increasing attention in recent years among aluminum ...
Özer, Alpay, Çetin, Harun
openaire +1 more source
Materials Research Bulletin, 2009
Abstract Dependence of the combustion reaction behavior and product on the B 4 C particle size in the Al–Ti–B 4 C and Al–TiO 2 –B 4 C systems was investigated. The results show that in both systems, the SHS reaction kinetics is primarily controlled by diffusion.
Binglin Zou, Ping Shen, Qichuan Jiang
openaire +1 more source
Abstract Dependence of the combustion reaction behavior and product on the B 4 C particle size in the Al–Ti–B 4 C and Al–TiO 2 –B 4 C systems was investigated. The results show that in both systems, the SHS reaction kinetics is primarily controlled by diffusion.
Binglin Zou, Ping Shen, Qichuan Jiang
openaire +1 more source