In this study, metal matrix hybrid composites obtained by adding B4C and graphene nanoplatelets (GNPs) powders as reinforcement elements to Al7075 were produced powder metallurgy (P/M) method. Mixture prepared supplementing with different weight ratios of (2-5-10%) GNPs (0.5%) are compressed at room temperature pressing pressures (600-700-800 MPa) then temperatures (500-550- 600C) was sintered...

Abrasive flow machining (AFM) is one of the non-conventional finishing processes used to attain good surface quality and high material removal. However, limited attempts have been made improve performance these processes. This paper presents a novel magnetic abrasive (MAFM) setup fabricated by adding magnetization effect in which nylon fixture permanent magnets are replaced newly aluminium coil...

B4C and its composites with TiB2 as second phase continues to be extensively used as the preferred ceramic material in military applications as armor systems for absorbing and dissipating kinetic energy from high velocity projectiles. It also exhibits a high melting point (2427 °C), and high neutron absorption cross section. Pressureless sintering of the B 4C-nanoTiB2 nanocomposite using small ...

Aluminum matrix composites are widely employed in aerospace, military, automobile, and transport applications. The high-strength with low-weight materials required to fulfill the requirement of high-performance reinforced hard reinforcements obtain high-strength-to-weight properties for using process parameters fabrication technique define mechanical tribological properties. Many types optimiza...

ABSTRACT. In this work, the Copper composites Cu-x wt. % B4C (x = 0, 5, 10, 15, 20) were fabricated for metallurgical and mechanical property evaluation as per ASTM standards. The characterization tests on samples include x-ray diffraction, optical microscopy, scanning electron microscopy with EDX. Further, pin-on-disc apparatus was used to investigate tribological behavior of composite specime...

Amorphous boron carbide (B4C) thin films are by far the most popular form for neutron converting layers in 10B-based detectors, which a rising trend detector technologies response to increasing scarcity and price of 3He, standard material detection. The microstructure B4C is closely related important properties, e.g. density adhesion, layers, eventually affect detection efficiency long-term sta...

Thermal plasma spraying method was used for coating the pre-prepared surfaces of turbine blades. Nickel (Ni) as a base material with fixed percentage alumina (5%Al2O3), and (5,10,15,20,25%) Boron carbide (B4C) reinforcement material. Cermet powders were mixed one hour, then bases steel type (316L) prepared roughened using sandblasting to increase adhesion strength between coated materials base....

A project of an X-ray monochromator for the "SKIF" synchrotron based on two flat mirrors with multilayer reflective coatings is reported. The concept absence precision mechanical systems and feedthroughs in vacuum, which significantly reduces mirror surface contamination increases scanning accuracy. In addition, overall structure device greatly simplified this way, turn leads ...