Results 51 to 60 of about 68,645 (309)

The study of the structure and properties of a wear-resistant gas-thermal coating containing tungsten

open access: yesFrontier Materials & Technologies, 2023
The paper presents the results of reverse engineering including metallographic, mechanical, and engineering-technical studies of used rods of a compressor produced by the Dresser-Rand company (Siemens, Germany).
Aleksey Yu. Plesovskikh   +1 more
doaj   +1 more source

Heat exchanger method, ingot casting; fixed abrasive method, multi-wire slicing, phase 2. Silicon sheet growth development for the large area sheet task of the low cost silicon solar array project [PDF]

open access: yes, 1978
A crack-free silicon ingot has been cast in a graded, semiconductor purity silica crucible. More than 90% single crystallinity has been achieved in 2.5 kg cast ingots.
Khattak, C. P., Schmid, F.
core   +2 more sources

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Graphite emulsion with excellent dispersion stability and rheological property for drawing ultrafine tungsten wire

open access: yesJournal of Materials Research and Technology
The development of silicon wafers in the photovoltaic industry towards larger and thinner sizes requires ultrafine tungsten wires, and the uniform coating of high-performance graphite emulsion is the key to ensuring the quality of tungsten wires. However,
Du Zhao   +8 more
doaj   +1 more source

Coefficient of thermal expansion of nanostructured tungsten based coatings assessed by thermally induced substrate curvature method

open access: yes, 2017
The in plane coefficient of thermal expansion (CTE) and the residual stress of nanostructured W based coatings are extensively investigated. The CTE and the residual stresses are derived by means of an optimized ad-hoc developed experimental setup based ...
Beghi, M. G.   +5 more
core   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

open access: yesAdvanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Effect of the heating rate and Y2O3 coating on the microstructure of Wf/Y2O3/W composites via field assisted sintering technology

open access: yesNuclear Materials and Energy
Field assisted sintering technology (FAST) is one of the potential methods to fabricate tungsten fiber reinforced tungsten (Wf/W) composites. The microstructure and mechanical properties of Wf/W composites are closely related to the sintering parameters.
Rui Shu   +8 more
doaj   +1 more source

Effect of Colloidal Stability of Diamond Nanoparticles on the Ni-W/Diamond Electro-co-deposition Composite Coatings and Evaluation of Corrosion Resistance

open access: yesInternational Journal of Electrochemical Science, 2016
Ni-W/diamond composite coatings can be produced by co-deposition of nickel-tungsten matrix with micro-sized diamond particles under direct current (DC) from aqueous citrate electrolytes in which diamond particles are dispersed.
Han-Tao Wang   +3 more
doaj   +1 more source

Phase Composition and Defect Substructure of Strengthening Layer Surfaced on Low Alloyed Steel [PDF]

open access: yes, 2018
The microstructure and microhardness distribution in surface of low carbon Hardox 450 steel coated with alloyed powder wires of different chemical compositions are studied.
Gromov, Victor E.   +5 more
core   +1 more source

Review on the Versatility of Tungsten Oxide Coatings [PDF]

open access: yesphysica status solidi (a), 2019
Tungsten oxide is a versatile material with many advantages such as large availability and low fabrications costs. Additionally, it is suitable to be produced in the form of thin films or coatings, which makes it very attractive for many applications.
Cezarina C. Mardare, Achim W. Hassel
openaire   +2 more sources

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