Results 11 to 20 of about 286 (167)

Subcriticality control elements in a reactor system with an extended plasma source of neutrons with regard for temperature [PDF]

Nuclear Energy and Technology, 2021
Materials have been selected for the shim rods and burnable absorbers to compensate for the excessive reactivity of the facility’s blanket part and to provide for the possibility of reactivity control in conjunction with a plasma source of neutrons.
Vladimir V. Knyshev, Aleksandr G. Karengin, Igor V. Shamanin   +2 more
doaj   +3 more sources

Microwave Sintering of Aluminum-ZrB2 Composite: Focusing on Microstructure and Mechanical Properties [PDF]

Materials Research, 2016
Microwave assisted rapid sintering was carried out to fabricate aluminum-ZrB2 metal matrix composites containing 1 wt% cobalt and 10, 15 and 20 wt% ZrB2 as the reinforcements at temperatures of 600, 700 and 800°C.
Ehsan Ghasali, Rahim Yazdani-rad, Ali Rahbari, Touradj Ebadzadeh   +3 more
doaj   +2 more sources

Optimal Process Parameters for a Thermal-Sprayed Molybdenum-Reinforced Zirconium Diboride Composite on a Dummy Substrate

Energies, 2022
Thermal spray is an effective process for the fabrication of a metal matrix composite (MMC), where a zirconium diboride reinforcement is embedded in a molybdenum matrix to enable the combining of favorable properties in a new composite.
Muftah M. Mihoob, Haetham G. Mohammed, Thar Mohammed Badri Albarody, Faiz Ahmad, Mohamad Sahban Alnarabiji   +4 more
doaj   +1 more source

Effect of synthesis on the purity and particle size of ZrB2 powder [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2016
In the present investigation, an attempt has been made to prepare ZrB2 powder by self-propagating high temperature synthesis (SHS) technique. The effect of synthesis on the purity and morphology of powder is investigated.
Gadakary S., Davidson M.J., Veerababu R., Khanra A.K.   +3 more
doaj   +1 more source

PELAPISAN PERMUKAAN PELET UO2 DENGAN ZIRKONIUM DIBORIDA MENGGUNAKAN METODA SPUTTERING

Urania, 2016
ABSTRAK PELAPISAN PERMUKAAN PELET UO2 DENGAN ZIRKONIUM DIBORIDA MENGGUNAKAN METODA SPUTTERING. Pengembangan teknologi bahan bakar nuklir bertujuan untuk meningkatkan efisiensi pengoperasian Pembangkit Listrik Tenaga Nuklir (PLTN). Salah satu solusi yang
Sungkono Sungkono, Tri Mardji Atmono, Dwi Priyantoro   +2 more
doaj   +1 more source

Study on ZrB₂-Based Ceramics Reinforced with SiC Fibers or Whiskers Machined by Micro-Electrical Discharge Machining

Micromachines, 2020
The effects of different reinforcement shapes on stability and repeatability of micro electrical discharge machining were experimentally investigated for ultra-high-temperature ceramics based on zirconium diboride (ZrB2) doped by SiC.
Mariangela Quarto, Giuliano Bissacco, Gianluca D’Urso   +2 more
doaj   +1 more source

Effect of ZrB2 Particle Size on Pressureless Sintering of ZrB2 - ß-Sic Composites [PDF]

Journal of Aerospace Technology and Management, 2019
Zirconium diboride is an ultra high temperature ceramic material that leads this emerging class of materials because of its distinct combination of properties, including high melting temperature (> 3000 °C) and the lowest theoretical density(6.09 g·cm–3)
Rosa Maria da Rocha, Frank Ferrer Sene, Mariah de Oliveira Juliani, Caroline Oliveira Davi   +3 more
doaj   +3 more sources

Reactive Spark Plasma Sintering and Mechanical Properties of Zirconium Diboride–Titanium Diboride Ultrahigh Temperature Ceramic Solid Solutions

Technologies, 2016
Ultrahigh temperature ceramics (UHTCs) such as diborides of zirconium, hafnium tantalum and their composites are considered to be the candidate materials for thermal protection systems of hypersonic vehicles due to their exceptional combination of ...
Karthiselva N. S., Srinivasa Rao Bakshi
doaj   +1 more source

Synthesis and characterization of ZrB2 nanopowders via metallothermic reduction of ZrCl4 using Na, Mg and Al in mild temperature: a morphology/reductant correlation

Journal of Materials Research and Technology, 2020
In this research, zirconium diboride (ZrB2) nanopowder was synthesized in different particle sizes and morphologies via methallothermic reduction technique at low-temperature ranges by reaction of ZrCl4, B2O3 and metallic reductants (Na, Mg and Al).
Mehdi Emamalizadeh, Mohammad Mahdavi, Arash Shokrolahi   +2 more
doaj   +1 more source

Low-temperature synthesis of ZrB2 powder from oxides using Na

Journal of Asian Ceramic Societies, 2017
ZrB2 was synthesized by heating a mixture of ZrO2, B2O3, and Na in a molar ratio of 1:1:5 at 873–1273 K. While unreacted ZrO2 remained in the sample synthesized at 873 K, single phase ZrB2 powders were obtained at temperatures ≥1073 K.
Haruhiko Morito, Kenjiro Koshiji, Hisanori Yamane   +2 more
doaj   +1 more source