Results 71 to 80 of about 172,894 (301)

Method of fabricating porous silicon carbide (SiC) [PDF]

open access: yes, 1995
Porous silicon carbide is fabricated according to techniques which result in a significant portion of nanocrystallites within the material in a sub 10 nanometer regime.
Kurtz, Anthony D., Shor, Joseph S.
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm   +6 more
wiley   +1 more source

FORMATION OF POROUS SILICON IN THE PULSED GALVANOSTATIC MODE

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The results of porous silicon formation by anodization of single crystalline silicon wafers in the pulsed galvanostatic mode are presented. Correlations between pore structure and anodization process parameters were determined.
E. B. Chubenko   +4 more
doaj  

Laterally stacked Schottky diodes for infrared sensor applications [PDF]

open access: yes, 1991
Laterally stacked Schottky diodes for infrared sensor applications are fabricated utilizing porous silicon having pores. A Schottky metal contract is formed in the pores, such as by electroplating.
Lin, True-Lon
core   +1 more source

Porous silicon formation and electropolishing

open access: yes, 2001
Electrochemical etching of silicon in hydrofluoride containing electrolytes leads to pore formation for low and to electropolishing for high applied current. The transition between pore formation and polishing is accompanied by a change of the valence of
A. Ulhir   +20 more
core   +1 more source

Controlling the Er content of porous silicon using the doping current intensity [PDF]

open access: yes, 2014
The results of an investigation on the Er doping of porous silicon are presented. Electrochemical impedance spectroscopy, optical reflectivity, and spatially resolved energy dispersive spectroscopy (EDS) coupled to scanning electron microscopy ...
Falqui, Andrea   +7 more
core   +2 more sources

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

open access: yesAdvanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert   +6 more
wiley   +1 more source

Preparation of Porous Silicon by Electrochemical Etching in the Fabrication of a Solar Cell [PDF]

open access: yes, 2003
Porous silicon samples have been prepared using electrochemical etching technique. In this project, a 3 cm x 5cm single crystal p-type silicon wafer , resistivity 19.64 Ωcm with thickness of 200µm was used to prepare porous silicon.
Magentharau, Adin Naraina
core  

Huge (but finite) time scales in slow relaxations: beyond simple aging

open access: yes, 2011
Experiments performed in the last years demonstrated slow relaxations and aging in the conductance of a large variety of materials. Here, we present experimental and theoretical results for conductance relaxation and aging for the case-study example of ...
Ariel Amir   +5 more
core   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller   +8 more
wiley   +1 more source

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