Nano size nickel copper ferrite powders (NiCuFe2O4) have been prepared by a prepared by Co precipitation method. The resulting powders were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM).The result showed nanosize nickel copper ferrite(35.65nm). The powders showed extensive XRD line broadening and sizes of crystals observed from the XRD line broadening was35.65 nm,...

Increasing the hardness and wear resistance of powder alloys coatings through use ultrafine-grained powders metastable phases is a promising way in metallurgy. This paper presents results studies process obtaining ultrafine by electric discharge erosion cemented carbide waste WC-5TiC-10Co on special installation. An empirical model that describes dependence productivity energy properties liquid...

Motivated by potential applications in architecture, we study Darboux cyclides. These algebraic surfaces of order ≤ 4 are a superset of Dupin cyclides and quadrics, and they carry up to six real families of circles. Revisiting the classical approach to these surfaces based on the spherical model of 3D Möbius geometry, we provide computational tools for the identificiation of circle families on ...

Laser powder bed fusion (LPBF) requires application of powders with specific characteristics. These are near-spherical shape particles, uniform elemental composition, typical particle size 5 – 70 µm, etc. Such produced by spheroidization methods. They have such disadvantages as high cost and sale only in large quantities. There publications describing LPBF powders, the methods, alternative to s...

By combining the two types of magnetoelastic and magnetochromatic materials in an epoxy, we can make a hybrid system that exhibits optical response due to elastic strain. It could be used structural health monitoring, for real-time monitoring crack propagation or general evaluation condition structure, both visualized by change color. In this study, magnetostrictive polymer composites (MPCs) wi...

Abstract Prior investigations of the behavior regolith on surface planetary bodies has considered motion and interactions individual grains. Recent work shown significance cohesion in understanding regolith, especially small, airless bodies. Surficial grains may detach from a body due to variety phenomena, including aeolian effects, spacecraft operations, micrometeoroid bombardment, electrostat...

The presence of fluoride, lithium and carbonate group within hydroxyapatite occurring naturally the body provides basis for investigating sintering ability co-substituted hydroxyfluorapatites nanopowders use as biomaterials. Ca10-xLix(PO4)6-x(CO3)x(OH)F nanopowders, with x equal to 0, 0.5, 1, 1.5, 2 2.5 were prepared using mechanosynthesis their extensive characterization was realized. Substitu...

In this chapter, various synthesis routes for PZT powders and fabrication processing techniques for PZT ceramics and films are reviewed. Emphasis is placed on chemical routes, especially the hydrothermal synthesis of PZT powders. The principles of the colloidal chemistry in ceramic suspension and its application to the colloidal processing of ceramics and films, especially when using sub-micron...

Given the complexity of laser-material interactions prevalent in powder bed fusion additive manufacturing, need for tight control alloy composition metal feedstock is leading to use specific gases during atomization. These changes atomization gas also impact flow and packing. In order identify magnitude this impact, two nitrogen atomized one argon 316 L austenitic stainless steel powders with s...

Foods are fortified with elemental forms of iron to reduce iron deficiency. However, the nutritional efficacy of current, commercially produced elemental iron powders has not been verified. We determined the bioavailability of six commercial elemental iron powders and examined how physicochemistry influences bioavailability. Relative biological value (RBV) of the iron powders was determined usi...