Materials - Defects
Positron Annihilation Spectroscopy to Characterize Irradiation Induced Vacancy Type Defects in Materials for Nuclear Fission and Fusion
... reactors, materials are submitted to irradiations and modification of their macroscopic properties such as swelling or hardening is observed… It is of first importance to understand the origin of these evolutions ...
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Acoustic Emission Studies on Weld Bead Defects in Nuclear Grade SS 316L Materials
... weld defects of SS 316L ...fusion defects were im- planted in weld bead region of the ...weld defects of SS 316L materials and it is found that, the parameter “counts ...
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Application of Ultrasonic C-Scan Techniques for Tracing Defects in Laminated Composite Materials
... composite materials are developed and applied, with an aim to trace specific artificial ...of materials are examined; an advanced carbon/epoxy system and a typical marine type glass/polyester ...artificial ...
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Development and application of embedded cluster methodologies for defects in ionic materials
... ionic materials dem onstrate th a t the photon fluence dependence of the ion yield is a nonlinear function, which is often described by a power law, and th a t multiple photon processes as well as defects ...
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Study of Surface and Subsurface Defects in Materials by Photothermal Deflection Technique: Theory and Experience
... Photothermal deflection is widely used to study defects in materials. Both high spatial resolution and high sensitivity are required to detect them. In order to improve the theoretical model in the case of ...
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Defects within carbon-based electronic materials
... Chapter II Diamond and conjugated polymers; two carbon-based electronic materials _________ 29 the presence of boron at substitutional sites. These diamonds are p-type semiconductors with an acceptor ionisation ...
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Diffusion within fluorite structured materials and the effect of defects
... Today’s scientists and engineers are faced with an ever increasing energy crisis. The U.S. Energy Information Administration predicts a 48% worldwide increase in energy demand from 2012 to 2040, with renewable sources ...
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Atomic Defects in Two-Dimensioal Materials: From Single-Atom Spectroscopy to Functionalities in Opto-/Electronics, Nanomagnetism, and Catalysis
... two-dimensional materials science is accompanied by equally great challenges such as defects engineering in the large-scale sample ...structural defects on the electronic properties, in order to ...
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Study of bone-like hydroxyapatite/polyamino acid composite materials for their biological properties and effects on the reconstruction of long bone defects
... bone defects still existed, there was marginal sclerosis, and the broken end was connected through the fiber; (D) in the experimental group, the Bha/Paa material was not visible, and new bone had formed, ...
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Lattice Defects and Their Influence on the Mechanical Properties of Bulk Materials Processed by Severe Plastic Deformation
... fcc materials, the three-dimensional vacancy agglomerates may collapse into two-dimensional clusters on close-packed {111} planes which are bounded by small Frank-type dislocation loops with the Burgers vector ...
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Interpretation and Regulation of Electronic Defects in IGZO TFTs Through Materials & Processes
... An increase in device threshold voltage is reported under positive gate bias stress (PBS) for unpassivated IGZO TFTs [107]. The IGZO back-channel is sensitive to the presence of oxygen and water vapors (Figure 2.6). The ...
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Electronic properties of defects in silicon and related materials
... complexity defects such as twinnings and inclusions are called gross defects as they can involve several atomic ...extended defects after their interaction with point defects or after ...
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Effects of cationic substitution on structural defects in layered cathode materials LiNiO2
... HPC Materials Chemistry Consortium, which is funded by EPSRC (EP/ F067496), this work made use of the facilities of HECToR, the UK's national high-performance computing service, which is provided by UoEHPCx Ltd at ...
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Fundamental Properties of Ti 6Al 4V Alloy Produced by Selective Laser Melting Method
... examined materials were three SLM materials having different axial ...SLM materials were adequately high and more than ...SLM materials possessed a columnar microstructure extending along the ...
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Mechanistic Aspects of Factors Affecting Pitting Corrosion of Metallic Materials for Marine Application: A Review Paper
... metallic materials including aluminum, aluminium alloys, Fe-Cr alloy, low alloy steel and ...metallic materials via some mechanisms covering the generation of lattice defects density, accelerated ...
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Photoluminescence Emission and Raman Vibration Properties of Asymmetric Mn2+-Doped ZnO Nanoparticle Fabricated by a Solvothermal Method
... To study the optical properties and defects that exist in the band gap of the materials, we measured photoluminescence spectra at room temperature. In principle, the UV peak in the PL spectra is associated ...
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Effect of the Jet Pressure of Reinforced Grinding on the Surface of Bearing Rings
... other defects in materials shape, size and distribution on material fatigue damage, and they also analyzed the influence of microstructure and carbide that contains different amount of carbon on the rolling ...
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Micro-CT Analysis of Bone Healing in Rabbit Calvarial Critical-Sized Defects with Solid Bioactive Glass, Tricalcium Phosphate Granules or Autogenous Bone
... After sacrifice the calvarial bone blocks including the bilaterally created defects with filling materials were harvested for ex vivo micro-CT imaging (Figure 1). The samples were scanned with an in vitro ...
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A continuum anisotropic damage model with unilateral effect
... geo- materials under various loading paths leads to the represen- tation of such defects by a damage variable, which can take a scalar or tensorial character depending on the degree of char- acterization of ...
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Detection of defects in digital texture images using segmentation
... the defects in gray level digital ...resource materials.[2]M.Ghazvini,A.Monadjemi,K.Jamshidi said defects can be identified using detail matrices which consist of median,max and min ...identifying ...
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