The Relations Between the Mechanical Properties and the Nano Crystalline in Chalcogenide Glass System

The aim of the present work was to compare microstructures and mechanical properties of nano-Al alloys fabricated by two different methods: (i) SPD induced grain refinement, (ii) plastic consolidation of nano-powders or nano-crystalline ribbons. SPD grain refinement has been implemented by hydrostatic extrusion, HE. The ribbons were rapidly solidified using a melt spinning methods. Plastic consolidation of powder and ribbons was conducted by warm extrusion. The results of the studies show that by applying various fabrication routes for a given chemical composition, diverse nano-structures can be obtained, which differ in terms of grain size and shape, grain boundary character and dislocation density. As a result, the alloys also differ significantly in the mechanical properties. The findings are discussed in terms of the possibilities for optimizing properties of the bulk-nano-metals.

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Threshold switching in Te46 − xAs32+xGe10Si12 chalcogenide glass system

Vacuum ◽

10.1016/s0042-207x(96)00242-4 ◽

1997 ◽

Vol 48 (2) ◽

pp. 135-141 ◽

Cited By ~ 24

Author(s):

MA Afifi ◽

NA Hegab

Keyword(s):

Chalcogenide Glass ◽

Glass System ◽

Threshold Switching

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Comparative studies on microstructural evolution, mechanical properties and room temperature dry sliding tribological behavior of nano-crystalline Al5083 alloy produced by the cryobox technique

Materials Research Express ◽

10.1088/2053-1591/ab3163 ◽

2019 ◽

Vol 6 (9) ◽

pp. 0965a2

Author(s):

Matin Saessi ◽

Ali Alizadeh

Keyword(s):

Mechanical Properties ◽

Microstructural Evolution ◽

Comparative Studies ◽

Room Temperature ◽

Tribological Behavior ◽

Dry Sliding ◽

Nano Crystalline

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Study of 0.4Sb2Se3-0.6CuI Nano-Crystalline Chalcogenide Glass

Transactions of the Indian Ceramic Society ◽

10.1080/0371750x.2013.795732 ◽

2013 ◽

Vol 72 (1) ◽

pp. 29-31 ◽

Cited By ~ 1

Author(s):

Rashmi M. Jogad ◽

M. S. Jogad ◽

Rakesh Kumar ◽

P. S. R. Krishna ◽

G. P. Kothiyal ◽

...

Keyword(s):

Chalcogenide Glass ◽

Nano Crystalline

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Mechanical Properties and Microarchitecture of Nanoporous Hydroxyapatite Bioceramic Nanoparticle Coatings on Ti and TiN

MRS Proceedings ◽

10.1557/proc-975-0975-dd06-15 ◽

2006 ◽

Vol 975 ◽

Author(s):

Andrei Stanishevsky ◽

Shafiul Chowdhury ◽

Nathaniel Greenstein ◽

Helene Yockell-Lelievre ◽

Jari Koskinen

Keyword(s):

Mechanical Properties ◽

Young’S Modulus ◽

Young's Modulus ◽

Biological Response ◽

Dip Coating ◽

Nano Crystalline ◽

Ceramic Manufacturing ◽

Nanoparticle Coatings

ABSTRACTThe hydroxyapatite (HA) based bioceramic materials are usually prepared at high sintering temperatures to attain suitable mechanical properties. The sintering process usually results in a material which is compositionally and morphologically different from nonstoichiometric nano-crystalline HA phase of hard tissue. At the same time, HA particulates used as precursors in ceramic manufacturing are often very similar to the natural HA nanocrystals. It has been shown that synthetic nanoparticle HA (nanoHA) based materials improve the biological response in vitro and in vivo, but the information on mechanical properties of these materials is scarce.In this work we studied the HA nanoparticle (10 – 80 nm mean size) coatings with 30 – 70% porosity prepared by a dip-coating technique on Ti and TiN substrates. It has been found that the mechanical properties of HA nanoparticle coatings are strongly influenced by the initial size, morphology, and surface treatment of nanoparticles. The nanoindentation Young's modulus and hardness of as–deposited nanoHA coatings were in the range of 2.5 – 6.9 GPa and 80 – 230 MPa, respectively. The coatings were stable after annealing up to at least 600 °C, reaching the Young's modulus up to 23 GPa and hardness up to 540 MPa, as well as in simulated body fluids.

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Influence of Scanning on Nano Crystalline β-Ti Alloys Fabricated by Selective Laser Melting and Their Applications in Biomedical Science

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2020.17340 ◽

2020 ◽

Vol 20 (3) ◽

pp. 1605-1612 ◽

Cited By ~ 5

Author(s):

Lamei Yan ◽

Jianghong Yu ◽

Yuxing Zhong ◽

Yan Gu ◽

Yunpeng Ma ◽

...

Keyword(s):

Mechanical Properties ◽

Elastic Modulus ◽

Selective Laser Melting ◽

Biomedical Science ◽

The Novel ◽

Laser Melting ◽

Bioactive Properties ◽

Nano Crystalline ◽

Deformation Textures ◽

The Cross

The present study focuses on the microstructural and bioactive properties evolution in selective laser melting (SLM) β titanium alloys. We have applied cross-scan strategy for improving mechanical properties and lower elastic modulus of SLMed Ti–20Mg–5Ta alloys which has been shown to be altering the microstructure and refining the grain size. The cross-scan strategy can refine the microstructure and induce various deformation textures in contrast to the conventional scan strategy. The microstructures of Ti–20Mg–5Ta alloys indicate that the cross-scan strategy will yield the best mechanical properties and lower elastic modulus. The corrosion behavior of the Ti–20Mg–5Ta alloys was studied during immersion in an acellular simulated body fluid (SBF) at 37±0.50 °C for 28 days. Both the mechanical and bioactive properties showed that the novel Ti–20Mg–5Ta alloys should be ideal for bone implants.

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