Results 1 to 10 of about 40,441 (143)

Fumed Silica-Based Ultra-High-Purity Synthetic Quartz Powder via Sol–Gel Process for Advanced Semiconductor Process beyond Design Rule of 3 nm [PDF]

open access: yesNanomaterials, 2023
Fumed silica-based ultra-high-purity synthetic quartz powder was developed via the sol–gel process to apply to quartz wares and quartz crucibles for use in advanced semiconductor processes. The process conditions of preparing potassium silicate solution,
Ji-Ho Choi   +3 more
doaj   +2 more sources

Ultra-Low-Bubble-Density Quartz Glass Enabled by Stepwise Calcination of High-Purity Synthetic Quartz Powder [PDF]

open access: yesNanomaterials
High-purity synthetic quartz powders are widely used for quartz crucibles and quartzware in semiconductor processes. However, sol–gel-derived synthetic quartz powders contain hydrogen bonds on pore interiors and surfaces, inducing bubble formation during
Woo-Guk Lee   +7 more
doaj   +2 more sources

Investigation of the influences of pulsed electrical discharges on the grinding of quartz raw materials [PDF]

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2023
The article considers a method for obtaining raw materials — quartz powder, used to increase the resistance of building materials to adverse natural facts (wind, rain, etc.).
A.K. Khassenov   +6 more
doaj   +3 more sources

Electrophoretic Deposited Quartz Powder-Assisted Growth of Multicrystalline Silicon

open access: yesCrystals, 2022
Ingot multicrystalline silicon (Mc-Si) needs to be improved in quality and reduced in cost compared with Czochralski monocrystalline silicon. A uniform and dense quartz nucleation layer was obtained by the electrophoretic deposition of quartz powder on ...
Xiang Quan   +3 more
doaj   +1 more source

Investigation on Dielectric Properties of Press Board Coated with Epoxy Resin, Quartz, and Rice Husk Ash

open access: yesAdvances in Materials Science and Engineering, 2021
Epoxy resin mixed with rice husk ash and quartz powder increases its dielectric strength. This paper presents the dielectric properties of the press board coated with this epoxy mixture. In this work, the press board, which is used in the transformer, is
Banumathi S.   +7 more
doaj   +1 more source

The influence of ingredients on the properties of reactive powder concrete: A review

open access: yesAin Shams Engineering Journal, 2021
Reactive Powder Concrete is a type of ultra-high-performance concrete. Improvement of microstructure, elimination of coarse aggregate, particle packing, and toughness enhancement are the main principles of RPC development.
Ola A. Mayhoub   +3 more
doaj   +1 more source

Effects of compaction and water content on thermal conductivity of unsaturated soils

open access: yesYantu gongcheng xuebao, 2020
The thermal conductivity of soils is an important thermal physical parameter for geotechnical engineering such as underground space and geothermal development.
XU Jie 1, 2, HU Hai-tao 1, 2, ZHENG Zhi 2
doaj   +1 more source

Pengaruh Penambahan Quartz Powder pada Reactive Powder Concrete terhadap Terbentuknya Kalsium - Silikat - Hidrat

open access: yesJurnal Teknik Sipil, 2013
Abstrak. Penelitian yang dilakukan adalah menjelaskan mengenai penggunaan quartz powder dalam reactive powder concrete (RPC) terutama pengaruhnya terhadap struktur mikro dan kuat tekan.
Widodo Kushartomo   +3 more
doaj   +3 more sources

Advances in composition and dating methods of fault gouge and weakening mechanisms of earthquake faults in bedrock area

open access: yes地质科技通报, 2022
Fault gouges result from the sliding of brittle faults and can be used to determine the deformational characteristics, formation ages and weakening mechanisms of earthquake faults, which are of great significance for structural geology and earthquake ...
Xianbing Xu   +3 more
doaj   +1 more source

Quartz Tube Enhanced Raman Scattering Spectroscopy

open access: yesFrontiers in Physics, 2022
Raman spectroscopy is widely used in many fields with the advantages of simultaneous species detection and molecular fingerprint characteristics, but the low detection sensitivity limits its further development, especially for highly scattering or turbid
Ganshang Si   +8 more
doaj   +1 more source

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