Aluminium metal matrix composites reinforced with SiC and B4C particles are a unique class of advanced engineered materials that have been developed to use in high strength , high wear resistant and tribological applications. The conventional techniques of producing these composites have some drawbacks. In this study, the aluminium hybrid composite is fabricated using stir casting method. 10 % ...

The distinction between mild pathogenic mtDNA mutations and population polymorphisms can be ambiguous because both are homoplasmic, alter conserved functions, and correlate with disease. One possible explanation for this ambiguity is that the same variant may have different consequences in different contexts. The NADH dehydrogenase subunit 1 (ND1) nucleotide 3394 T > C (Y30H) variant is such a ...

The TiB2 coating deposited by magnetron sputtering on the Ti6Al4V-simulated blade tip with a dense fiber-like microstructure has adhesion strength grade of HF1. High-speed rubbing results showed that could inhibit adhesive transfer Al-hBN seal at 300 m/s. It was found tribological oxidation led to TiB2/fused Al interface reaction characterization Al-adhesive tip. thin interlayer mainly consists...

This paper describes the synthesis of B4C/carbon nanotube (CNT) composite by hot-pressing and shows details for effectiveness CNT addition, additive amount its orientation on thermal shock resistance. CNTs tend to array perpendicular direction, which caused anisotropic mechanical properties B4C/CNT composite. We investigated residual bending strength thermally shocked composites determined crit...

This thesis is a theoretical study of configurationally disordered icosahedral boronrich solids, in particular boron carbides, using density functional theory and alloy theory. The goal is to resolve discrepancies, regarding the properties of boron carbides, between experiments and previous theoretical calculations which have been a controversial issue in the field of icosahedral boron-rich sol...

Titanium diboride (TiB2) is a low-density refractory material belonging to the family of ultra-high temperature ceramics (UHTCs). This paper reports on the production and microstructural and optical characterization of nearly fully dense TiB2, with particular interest to its potential utilization as novel thermal solar absorber. Monolithic bulk samples are produced starting from elemental react...