Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Shane A Catledge"'
Autor:
Bria Storr, Carolina Amezaga, Luke Moore, Seth Iwan, Yogesh K. Vohra, Cheng-Chien Chen, Shane A. Catledge
Publikováno v:
Materials, Vol 16, Iss 12, p 4475 (2023)
Metal oxide thermal reduction, enabled by microwave-induced plasma, was used to synthesize high entropy borides (HEBs). This approach capitalized on the ability of a microwave (MW) plasma source to efficiently transfer thermal energy to drive chemica
Externí odkaz:
https://doaj.org/article/a493a63375614e32a2a8422181db0597
Publikováno v:
AIP Advances, Vol 12, Iss 8, Pp 085228-085228-8 (2022)
A microwave plasma chemical vapor deposition system was used to synthesize cubic boron nitride (cBN) coatings on diamond seeded silicon substrates using direct current (DC) bias. Effects of the argon (Ar) flow rate and bias voltage on the growth of t
Externí odkaz:
https://doaj.org/article/1fdd65c961954005bf1f0567891b442c
Autor:
Bria Storr, Luke Moore, Kallol Chakrabarty, Zaheeruddin Mohammed, Vijaya Rangari, Cheng-Chien Chen, Shane A. Catledge
Publikováno v:
APL Materials, Vol 10, Iss 6, Pp 061109-061109-9 (2022)
Microwave-induced plasma was used to anneal precursor powders containing five metal oxides with carbon and boron carbide as reducing agents, resulting in high entropy boride ceramics. Measurements of hardness, phase structure, and oxidation resistanc
Externí odkaz:
https://doaj.org/article/10fe0000ed674f5aba4384f0e120df2b
Autor:
Bria Storr, Deepa Kodali, Kallol Chakrabarty, Paul A. Baker, Vijaya Rangari, Shane A. Catledge
Publikováno v:
Ceramics, Vol 4, Iss 2, Pp 257-264 (2021)
A novel approach is demonstrated for the synthesis of the high entropy transition metal boride (Ta, Mo, Hf, Zr, Ti)B2 using a single heating step enabled by microwave-induced plasma. The argon-rich plasma allows rapid boro-carbothermal reduction of a
Externí odkaz:
https://doaj.org/article/20083cca7180470f936192545e9497c1
Autor:
Seth Iwan, Kaleb C. Burrage, Bria C. Storr, Shane A. Catledge, Yogesh K. Vohra, Rostislav Hrubiak, Nenad Velisavljevic
Publikováno v:
AIP Advances, Vol 11, Iss 3, Pp 035107-035107-4 (2021)
A high-entropy transition metal boride (Hf0.2 Ti0.2 Zr0.2 Ta0.2 Mo0.2)B2 sample was synthesized under high-pressure and high-temperature starting from ball-milled oxide precursors (HfO2, TiO2, ZrO2, Ta2O5, and MoO3) mixed with graphite and boron-carb
Externí odkaz:
https://doaj.org/article/7356c810f58746469fe864c6feadb79e
Publikováno v:
Materials, Vol 14, Iss 23, p 7167 (2021)
Boron nitride (BN) is primarily a synthetically produced advanced ceramic material. It is isoelectronic to carbon and, like carbon, can exist as several polymorphic modifications. Microwave plasma chemical vapor deposition (MPCVD) of metastable wurtz
Externí odkaz:
https://doaj.org/article/f007e6e9a89e4cf48bad98f278e71d30
Autor:
Gopi Samudrala, Kallol Chakrabarty, Paul A. Baker, Bernabe S. Tucker, Yogesh K. Vohra, Shane A. Catledge
Publikováno v:
Materials, Vol 14, Iss 6, p 1397 (2021)
Boron-rich B-C compounds with high hardness have been recently synthesized by the chemical vapor deposition (CVD) method. In this paper, we present our successful efforts in the selective growth of microstructures of boron-carbon compounds on silicon
Externí odkaz:
https://doaj.org/article/3ca775e9951749afa9d0ef78b5a0e10a
Publikováno v:
Materials Research Express, Vol 8, Iss 4, p 046401 (2021)
We report bias enhanced nucleation and growth of boron-rich deposits through systematic study of the effect of a negative direct current substrate bias during microwave plasma chemical vapor deposition. The current flowing through a silicon substrate
Externí odkaz:
https://doaj.org/article/0457c2f8b8874bcabc8d72acc38e47e1
Autor:
Kallol Chakrabarty, Wei-Chih Chen, Paul A. Baker, Vineeth M. Vijayan, Cheng-Chien Chen, Shane A. Catledge
Publikováno v:
Materials, Vol 13, Iss 16, p 3622 (2020)
Superhard boron-rich boron carbide coatings were deposited on silicon substrates by microwave plasma chemical vapor deposition (MPCVD) under controlled conditions, which led to either a disordered or crystalline structure, as measured by X-ray diffra
Externí odkaz:
https://doaj.org/article/19ac1548dc824fc68a5c31c894f22df5
Autor:
Deepa Kodali, Kallol Chakrabarty, Shane A. Catledge, Bria C. Storr, Vijaya K. Rangari, Paul A. Baker
Publikováno v:
Ceramics, Vol 4, Iss 20, Pp 257-264 (2021)
A novel approach is demonstrated for the synthesis of the high entropy transition metal boride (Ta, Mo, Hf, Zr, Ti)B2 using a single heating step enabled by microwave-induced plasma. The argon-rich plasma allows rapid boro-carbothermal reduction of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b87c59e27c91661ad442e7eb0496a14
https://www.mdpi.com/2571-6131/4/2/20
https://www.mdpi.com/2571-6131/4/2/20