Effect of SiC particle size on the physical and mechanical properties of extruded Al matrix nanocomposites

Nowadays, bone diseases and defects as a result of trauma, cancers, infections and degenerative and inflammatory conditions are increasing. Consequently, bone repair and replacement have been developed with improvement of orthopedic technologies and biomaterials of superior properties. This review paper is intended to sum up and discuss the most relevant studies performed in the field of bone biology and bone regeneration approaches. Therefore, the bone tissue regeneration was investigated by synthetic substitutes, scaffolds incorporating active molecules, nanomedicine, cell-based products, biomimetic fibrous and nonfibrous substitutes, biomaterial-based three-dimensional (3D) cell-printing substitutes, bioactive porous polymer/inorganic composites, magnetic field and nano-scaffolds with stem cells and bone-biomaterials interface studies.

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Bone tissue regeneration: biology, strategies and interface studies.

Some mechanical properties of borided AISI H13 and 304 steels

Hard iron boride (Fe2B) on 99.97 wt% pure iron

The phase stability and mechanical properties of tungsten borides W2B, WB, WB2, W2B5 and WB4 were extensively studied by first-principles calculations within density functional theory. The thermodynamic and mechanical stabilities were examined. Our calculations on the enthalpy–pressure relationship and convex hulls have demonstrated that at zero pressure, the experimentally observed W2B–W2B (W2B–W2B represents W2B in W2B structure type, the same hereinafter) and WB–WB, and assumed WB2–ReB2 phases are stable against decomposition into other components. The estimated hardness of WB2–ReB2 is 39.4 GPa, suggesting that it is a potentially hard compound. At 60 GPa, the most stable phases are WB–WB and WB2–WB2. WB–WB, WB2–AlB2 and WB4 are the ground state phases at 100 GPa. The phase transition mechanism for WB2 was discussed. The synthesis of WB2–AlB2 could be conducted at high pressures.

Phase stability and mechanical properties of tungsten borides from first principles calculations.

The effect of sintering temperature on some properties of Cu-SiC composite

The effect of bond coat on mechanical properties of plasma-sprayed Al2O3 and Al2O3–13 wt% TiO2 coatings on AISI 316L stainless steel

This study reports on mechanical properties of borided pure tungsten. Boronizing heat treatment was performed in a solid medium consisting of Ekabor powders at 940 °C for 2, 4, and 8 h. The presence of WB on the surface of pure tungsten was confirmed by XRD analysis. Metallographic studies revealed an almost uniform and compact boride layer on the surface of the pure tungsten. The thickness of boride layer ranged from 10 to 42 μm with some scatters. The hardness of borided specimens decreased with the distance from the surface to the interior of the test material. The hardness of the boride on the substrate was 2500 HV while the hardness of the substrate was 445 HV.

Mediha Ipek

Papers

The effect of sintering temperature on some properties of Cu-SiC composite

The effect of bond coat on mechanical properties of plasma-sprayed Al2O3 and Al2O3–13 wt% TiO2 coatings on AISI 316L stainless steel

The characterization of borided pure tungsten

A mechanical aspect of borides formed on the AISI 440C stainless-steel

Kinetics of borided 31CrMoV9 and 34CrAlNi7 steels