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New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN

Presented is a study on the preparation, via original precursor solution chemistry, of intimately mixed composite nanocrystalline powders in the system gallium nitride GaN–titanium nitride TiN, atomic ratio Ga/Ti = 1/1, which were subjected to high-pressure (7.7 GPa) and high-temperature (650, 1000,...

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Autores principales: Drygaś, Mariusz, Lejda, Katarzyna, Janik, Jerzy F., Łyszczarz, Klaudia, Gierlotka, Stanisław, Stelmakh, Svitlana, Pałosz, Bogdan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307816/
https://www.ncbi.nlm.nih.gov/pubmed/34300712
http://dx.doi.org/10.3390/ma14143794
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author Drygaś, Mariusz
Lejda, Katarzyna
Janik, Jerzy F.
Łyszczarz, Klaudia
Gierlotka, Stanisław
Stelmakh, Svitlana
Pałosz, Bogdan
author_facet Drygaś, Mariusz
Lejda, Katarzyna
Janik, Jerzy F.
Łyszczarz, Klaudia
Gierlotka, Stanisław
Stelmakh, Svitlana
Pałosz, Bogdan
author_sort Drygaś, Mariusz
collection PubMed
description Presented is a study on the preparation, via original precursor solution chemistry, of intimately mixed composite nanocrystalline powders in the system gallium nitride GaN–titanium nitride TiN, atomic ratio Ga/Ti = 1/1, which were subjected to high-pressure (7.7 GPa) and high-temperature (650, 1000, and 1200 °C) sintering with no additives. Potential equilibration toward bimetallic compounds upon mixing of the solutions of the metal dimethylamide precursors, dimeric {Ga[N(CH(3))(2)](3)}(2) and monomeric Ti[N(CH(3))(2)](4), was studied with (1)H- and (13)C{H}-NMR spectroscopy in C(6)D(6) solution. The different nitridation temperatures of 800 and 950 °C afforded a pool of in situ synthesis-mixed composite nanopowders of hexagonal h-GaN and cubic c-TiN with varying average crystallite sizes. The applied sintering temperatures were either to prevent temperature-induced recrystallization (650 °C) or promote crystal growth (1000 and 1200 °C) of the initial powders with the high sintering pressure of 7.7 GPa having a detrimental effect on crystal growth. The powders and nanoceramics, both of the composites and of the individual nitrides, were characterized if applicable by powder XRD, SEM/EDX, Raman spectroscopy, Vicker’s hardness, and helium density. No evidence was found for metastable alloying of the two crystallographically different nitrides under the applied synthesis and sintering conditions, while the nitride domain segregation on the micrometer scale was observed on sintering. The Vicker’s hardness tests for many of the composite and individual nanoceramics provided values with high hardness comparable with those of the individual h-GaN and c-TiN ceramics.
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spelling pubmed-83078162021-07-25 New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN Drygaś, Mariusz Lejda, Katarzyna Janik, Jerzy F. Łyszczarz, Klaudia Gierlotka, Stanisław Stelmakh, Svitlana Pałosz, Bogdan Materials (Basel) Article Presented is a study on the preparation, via original precursor solution chemistry, of intimately mixed composite nanocrystalline powders in the system gallium nitride GaN–titanium nitride TiN, atomic ratio Ga/Ti = 1/1, which were subjected to high-pressure (7.7 GPa) and high-temperature (650, 1000, and 1200 °C) sintering with no additives. Potential equilibration toward bimetallic compounds upon mixing of the solutions of the metal dimethylamide precursors, dimeric {Ga[N(CH(3))(2)](3)}(2) and monomeric Ti[N(CH(3))(2)](4), was studied with (1)H- and (13)C{H}-NMR spectroscopy in C(6)D(6) solution. The different nitridation temperatures of 800 and 950 °C afforded a pool of in situ synthesis-mixed composite nanopowders of hexagonal h-GaN and cubic c-TiN with varying average crystallite sizes. The applied sintering temperatures were either to prevent temperature-induced recrystallization (650 °C) or promote crystal growth (1000 and 1200 °C) of the initial powders with the high sintering pressure of 7.7 GPa having a detrimental effect on crystal growth. The powders and nanoceramics, both of the composites and of the individual nitrides, were characterized if applicable by powder XRD, SEM/EDX, Raman spectroscopy, Vicker’s hardness, and helium density. No evidence was found for metastable alloying of the two crystallographically different nitrides under the applied synthesis and sintering conditions, while the nitride domain segregation on the micrometer scale was observed on sintering. The Vicker’s hardness tests for many of the composite and individual nanoceramics provided values with high hardness comparable with those of the individual h-GaN and c-TiN ceramics. MDPI 2021-07-07 /pmc/articles/PMC8307816/ /pubmed/34300712 http://dx.doi.org/10.3390/ma14143794 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Drygaś, Mariusz
Lejda, Katarzyna
Janik, Jerzy F.
Łyszczarz, Klaudia
Gierlotka, Stanisław
Stelmakh, Svitlana
Pałosz, Bogdan
New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN
title New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN
title_full New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN
title_fullStr New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN
title_full_unstemmed New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN
title_short New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN
title_sort new nitride nanoceramics from synthesis-mixed nanopowders in the composite system gallium nitride gan–titanium nitride tin
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307816/
https://www.ncbi.nlm.nih.gov/pubmed/34300712
http://dx.doi.org/10.3390/ma14143794
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