Pub Date : 2024-01-18DOI: 10.3103/s1061386223040088
D. Mayilyan, A. Aleksanyan
Abstract
The aim of this investigation was to synthesis Ti–5Al–2.5Fe alloy by “hydride cycle” (HC) method. The crystal structure of obtained alloy was studied by powder X-ray diffraction. It was found that the alloy was a near α-alloy containing main α phase (hexagonal close-packed structure, space group 194: P63/mmc) and small amount of β phase (body-centered cubic structure, space group 229: Im-3m). The microstructure of obtained materials was studied using scanning electron microscope (SEM) in a back-scattered electron (BSE) mode. On the SEM image of the synthesized compacted alloy no cracks and pores were observed. The SEM measurements showed that the particles synthesized hydride have size distribution in the range of 1–10 μm. Energy dispersive X-ray spectrometry (EDS) analysis showed that the chemical compositions of observed main grey phase were close to the nominal composition of Ti–5Al–2.5Fe α-phase. The hydride of Ti–5Al–2.5Fe alloy was synthesized by self-propagating high temperature synthesis (SHS) method. It was shown that Ti–5Al–2.5Fe tablets reacted with hydrogen without preliminary crushing in SHS mode at range of hydrogen pressure P(H2) = 1–2.5 MPa. Hydrogen capacity of synthesized (Ti–5Al–2.5Fe)H1.45 hydride was equal to 3.04 wt %. The density of synthesized alloy before (ρ1 = 4.0487 g/cm3) and after (ρ2 = 4.2511 g/cm3) the repeating of hydrogenation–dehydrogenation cycle was measured. It was found that as a result of cycle the density of sample was increased by 5%.
{"title":"Synthesis of Ti–5Al–2.5Fe Alloy and Its Hydride by HC and SHS Methods","authors":"D. Mayilyan, A. Aleksanyan","doi":"10.3103/s1061386223040088","DOIUrl":"https://doi.org/10.3103/s1061386223040088","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The aim of this investigation was to synthesis Ti–5Al–2.5Fe alloy by “hydride cycle” (HC) method. The crystal structure of obtained alloy was studied by powder X-ray diffraction. It was found that the alloy was a near α-alloy containing main α phase (hexagonal close-packed structure, space group 194: <i>P</i>6<sub>3</sub>/<i>mmc</i>) and small amount of β phase (body-centered cubic structure, space group 229: <i>Im</i>-3<i>m</i><b>)</b><i>.</i> The microstructure of obtained materials was studied using scanning electron microscope (SEM) in a back-scattered electron (BSE) mode. On the SEM image of the synthesized compacted alloy no cracks and pores were observed. The SEM measurements showed that the particles synthesized hydride have size distribution in the range of 1–10 μm. Energy dispersive X-ray spectrometry (EDS) analysis showed that the chemical compositions of observed main grey phase were close to the nominal composition of Ti–5Al–2.5Fe α-phase. The hydride of Ti–5Al–2.5Fe alloy was synthesized by self-propagating high temperature synthesis (SHS) method. It was shown that Ti–5Al–2.5Fe tablets reacted with hydrogen without preliminary crushing in SHS mode at range of hydrogen pressure <i>P</i>(H<sub>2</sub>) = 1–2.5 MPa. Hydrogen capacity of synthesized (Ti–5Al–2.5Fe)H<sub>1.45</sub> hydride was equal to 3.04 wt %. The density of synthesized alloy before (ρ<sub>1</sub> = 4.0487 g/cm<sup>3</sup>) and after (ρ<sub>2</sub> = 4.2511 g/cm<sup>3</sup>) the repeating of hydrogenation–dehydrogenation cycle was measured. It was found that as a result of cycle the density of sample was increased by 5%.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s1061386223040064
S. V. Kostin, P. M. Krishenik
Abstract
The stability of combustion of titanium + carbon black powder mixture to a local excess of the component was experimentally studied. The influence of the spreading of titanium melt or liquid reaction product on the stability of the combustion transition through transverse carbon powder barrier was considered. The direction of melt movement with respect to the front propagation direction was determined. It was shown that the stability of the combustion transition through the barrier is determined by thermal interaction between the combustion wave and the barrier and is not directly related to the convective heat transfer by the melt.
{"title":"Combustion of Inhomogeneous Titanium + Carbon Black Powder Mixture","authors":"S. V. Kostin, P. M. Krishenik","doi":"10.3103/s1061386223040064","DOIUrl":"https://doi.org/10.3103/s1061386223040064","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The stability of combustion of titanium + carbon black powder mixture to a local excess of the component was experimentally studied. The influence of the spreading of titanium melt or liquid reaction product on the stability of the combustion transition through transverse carbon powder barrier was considered. The direction of melt movement with respect to the front propagation direction was determined. It was shown that the stability of the combustion transition through the barrier is determined by thermal interaction between the combustion wave and the barrier and is not directly related to the convective heat transfer by the melt.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s1061386223040143
V. V. Kurbatkina, E. I. Patsera, T. A. Sviridova, N. A. Kochetov, E. A. Levashov
Abstract
This paper presents an in-depth study on the combustion synthesis, solid-solution formation, processing, and characterization of NbB2–HfB2 ceramics, aiming to explore their potential applications, particularly in industries requiring high-performance materials. We conducted macrokinetic measurements and fitted regression models to predict combustion temperature and velocity for compositions ranging from 50 to 100% HfB2. A combined method of ball milling and hot pressing was developed for processing the combustion products into dense ceramics. These methods resulted in samples with relative densities reaching 97%, hardness of up to 34 GPa, and Young’s modulus of up to 530 GPa, with NbB2–50% HfB2 solid solution exhibiting the best mechanical properties. The study revealed a linear increase in thermal properties and density with the rise in HfB2 content. The thermal conductivity of the solid solutions in the Nb–Hf–B system ranged from 34 to 40 W/mK and was found to increase with temperature, making these ceramics suitable for ultra-high-temperature applications. The findings have significant implications for aerospace and high-performance engineering sectors and provide a solid foundation for further investigation of Nb–Hf–B ceramics under real-world operational conditions.
{"title":"Combustion Synthesis and Characterization of Ultra-High-Temperature NbB2–HfB2 Solid Solutions","authors":"V. V. Kurbatkina, E. I. Patsera, T. A. Sviridova, N. A. Kochetov, E. A. Levashov","doi":"10.3103/s1061386223040143","DOIUrl":"https://doi.org/10.3103/s1061386223040143","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper presents an in-depth study on the combustion synthesis, solid-solution formation, processing, and characterization of NbB<sub>2</sub>–HfB<sub>2</sub> ceramics, aiming to explore their potential applications, particularly in industries requiring high-performance materials. We conducted macrokinetic measurements and fitted regression models to predict combustion temperature and velocity for compositions ranging from 50 to 100% HfB<sub>2</sub>. A combined method of ball milling and hot pressing was developed for processing the combustion products into dense ceramics. These methods resulted in samples with relative densities reaching 97%, hardness of up to 34 GPa, and Young’s modulus of up to 530 GPa, with NbB<sub>2</sub>–50% HfB<sub>2</sub> solid solution exhibiting the best mechanical properties. The study revealed a linear increase in thermal properties and density with the rise in HfB<sub>2</sub> content. The thermal conductivity of the solid solutions in the Nb–Hf–B system ranged from 34 to 40 W/mK and was found to increase with temperature, making these ceramics suitable for ultra-high-temperature applications. The findings have significant implications for aerospace and high-performance engineering sectors and provide a solid foundation for further investigation of Nb–Hf–B ceramics under real-world operational conditions.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s1061386223040131
V. N. Borshch, I. M. Bystrova, E. V. Pugacheva, N. Yu. Khomenko
Abstract
Co–Ni supported catalysts were prepared by low-temperature combustion of dried mixture of solutions of cobalt and nickel nitrates and urea after impregnation of silica fabric (>97% SiO2) premodified with 5, 10, and 15 wt % Al2O3. Modification of support was carried out by low-temperature combustion of dried mixture of solutions of aluminum nitrate and urea. Prepared supports and related catalysts were characterized by XRD, SEM, EDS, and BET method. The unreduced catalysts were found to contain oxides and complex oxides of nickel and cobalt. Reduction of catalysts with hydrogen at 400°C for 1 h was shown to contribute to forming metallic phases of Co and Ni; however, the nickel phase was detected only in reduced catalyst on unmodified fabric. The catalytic activity of catalysts was determined in the temperature range of 150–400°С. It was found that the reduced catalyst on support modified with 5 wt % Al2O3 possesses the highest CO2 conversion (61.8%) and methane yield (3.61 vol %) at 400°С.
{"title":"Hydrogenation of CO2 on Co–Ni Catalysts Produced by Low-Temperature Combustion Using Modified Silica Fabric","authors":"V. N. Borshch, I. M. Bystrova, E. V. Pugacheva, N. Yu. Khomenko","doi":"10.3103/s1061386223040131","DOIUrl":"https://doi.org/10.3103/s1061386223040131","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Co–Ni supported catalysts were prepared by low-temperature combustion of dried mixture of solutions of cobalt and nickel nitrates and urea after impregnation of silica fabric (>97% SiO<sub>2</sub>) premodified with 5, 10, and 15 wt % Al<sub>2</sub>O<sub>3</sub>. Modification of support was carried out by low-temperature combustion of dried mixture of solutions of aluminum nitrate and urea. Prepared supports and related catalysts were characterized by XRD, SEM, EDS, and BET method. The unreduced catalysts were found to contain oxides and complex oxides of nickel and cobalt. Reduction of catalysts with hydrogen at 400°C for 1 h was shown to contribute to forming metallic phases of Co and Ni; however, the nickel phase was detected only in reduced catalyst on unmodified fabric. The catalytic activity of catalysts was determined in the temperature range of 150–400°С. It was found that the reduced catalyst on support modified with 5 wt % Al<sub>2</sub>O<sub>3</sub> possesses the highest CO<sub>2</sub> conversion (61.8%) and methane yield (3.61 vol %) at 400°С.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Production of NiTi Alloys by MA–SHS Consolidation","authors":"Yu. V. Bogatov, V. A. Shcherbakov","doi":"10.3103/s1061386223040027","DOIUrl":"https://doi.org/10.3103/s1061386223040027","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Keywords</h3><p>: Forced SHS compaction, mechanical activation, titanium nickelide, combustion temperature, burning velocity, phase composition</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s1061386223040118
A. P. Amosov, V. A. Novikov, E. M. Kachkin, N. A. Kryukov, A. A. Titov, I. M. Sosnin, D. L. Merson
Abstract
The solution combustion synthesis (SСS) was used to prepare ZnO from mixtures of solutions of zinc nitrate (oxidizer) and citric acid (fuel) with different fuel-to-oxidizer ratio, as well as for doping ZnO with one of the elements Fe, Co, Cu, and Mg whose concentration was 0.1, 0.3, 1, 3, 10, and 15 wt % when adding corresponding doping element nitrate to the reagent mixture. Combustion characteristics (ignition delay time, combustion duration, coefficient of product mass conservation), composition, and structure of combustion products were studied. It was shown that the content of carbon impurities in the combustion product can be reduced from 8–30 to 1 wt % as a result of calcination for 1 h at 650°C. Calcinated and attrition-ground ZnO powder consisting of individual highly dispersed (<1 µm) nano-sized and submicron ZnO particles with an average crystallite size of 40 nm and sintered porous agglomerates ranging in size from 0.2 to 100 µm was found to exhibit high photocatalytic activity in the decomposition of phenol under ultraviolet irradiation. Doping ZnO with elements Fe, Co, and Cu decreased the photocatalytic activity, and only doping with 1 wt % Mg markedly increased it. However, both undoped and doped ZnO were not effective in photocatalytic decomposition of phenol under visible light.
{"title":"Solution Combustion Synthesis of ZnO Undoped and Doped with Fe, Co, Cu, and Mg Using Citric Acid as a Fuel for Photocatalytic Decomposition of Phenol","authors":"A. P. Amosov, V. A. Novikov, E. M. Kachkin, N. A. Kryukov, A. A. Titov, I. M. Sosnin, D. L. Merson","doi":"10.3103/s1061386223040118","DOIUrl":"https://doi.org/10.3103/s1061386223040118","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The solution combustion synthesis (SСS) was used to prepare ZnO from mixtures of solutions of zinc nitrate (oxidizer) and citric acid (fuel) with different fuel-to-oxidizer ratio, as well as for doping ZnO with one of the elements Fe, Co, Cu, and Mg whose concentration was 0.1, 0.3, 1, 3, 10, and 15 wt % when adding corresponding doping element nitrate to the reagent mixture. Combustion characteristics (ignition delay time, combustion duration, coefficient of product mass conservation), composition, and structure of combustion products were studied. It was shown that the content of carbon impurities in the combustion product can be reduced from 8–30 to 1 wt % as a result of calcination for 1 h at 650°C. Calcinated and attrition-ground ZnO powder consisting of individual highly dispersed (<1 µm) nano-sized and submicron ZnO particles with an average crystallite size of 40 nm and sintered porous agglomerates ranging in size from 0.2 to 100 µm was found to exhibit high photocatalytic activity in the decomposition of phenol under ultraviolet irradiation. Doping ZnO with elements Fe, Co, and Cu decreased the photocatalytic activity, and only doping with 1 wt % Mg markedly increased it. However, both undoped and doped ZnO were not effective in photocatalytic decomposition of phenol under visible light.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Mo–Si–B Alloy via Centrifugal SHS of MoO3/Al/Si/B/Al2O3 mixture: Effect of Al","authors":"Yu. S. Vdovin, D. E. Andreev, V. I. Yukhvid, O. D. Boyarchenko","doi":"10.3103/s1061386223040179","DOIUrl":"https://doi.org/10.3103/s1061386223040179","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Keywords: </h3><p>combustion, self-propagating high-temperature synthesis (SHS), Mo-based cast ceramic, gravity forces</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s1061386223040167
N. I. Radishevskaya, A. Yu. Nazarova, O. V. L’vov, R. P. Minin
Abstract
Light turquoise pigment was synthesized by solution combustion of a mixture containing Al(OH)3, solutions of boric, citric, and phosphoric acids, and copper nitrate and subsequent annealing at temperatures up to 900°C. To increase the thermal stability of pigments, the synthesis was carried out using an aluminophosphate binder. The synthesized pigments were found to contain amorphous borates, boron phosphate, phosphates and pyrophosphates of aluminum and copper. The copper phosphide CuP2 impurity formed during the synthesis process and subsequent annealing at 700°C gives the pigment a grayish tint but increases its anticorrosion properties.
{"title":"Synthesis of Copper Based Pigments","authors":"N. I. Radishevskaya, A. Yu. Nazarova, O. V. L’vov, R. P. Minin","doi":"10.3103/s1061386223040167","DOIUrl":"https://doi.org/10.3103/s1061386223040167","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Light turquoise pigment was synthesized by solution combustion of a mixture containing Al(OH)<sub>3</sub>, solutions of boric, citric, and phosphoric acids, and copper nitrate and subsequent annealing at temperatures up to 900°C. To increase the thermal stability of pigments, the synthesis was carried out using an aluminophosphate binder. The synthesized pigments were found to contain amorphous borates, boron phosphate, phosphates and pyrophosphates of aluminum and copper. The copper phosphide CuP<sub>2</sub> impurity formed during the synthesis process and subsequent annealing at 700°C gives the pigment a grayish tint but increases its anticorrosion properties.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s106138622304012x
V. Yu. Barinov, A. V. Shcherbakov
{"title":"Preparation of Molybdenum–Copper Pseudoalloy","authors":"V. Yu. Barinov, A. V. Shcherbakov","doi":"10.3103/s106138622304012x","DOIUrl":"https://doi.org/10.3103/s106138622304012x","url":null,"abstract":"","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-18DOI: 10.3103/s1061386223040106
D. I. Abzalov, T. G. Akopdzhanyan, N. I. Abzalov, R. A. Kochetkov, V. V. Grachev
Abstract
MgAlON were prepared by self-propagation high temperature synthesis (SHS) using powder and granular mixtures of aluminum, aluminum oxide, magnesium oxide, and magnesium perchlorate. The influence of granulation of starting particles of Al + Al2O3 + MgO + Mg(ClO4)2 powder mixtures on the microstructure and phase composition of combustion products was studied. It was revealed that the granulation of mixtures reduces the combustion temperature and burning velocity. It was found that the combustion products derived from granular mixtures consists of up to four phases (MgAlON, aluminum oxide, aluminum nitride, and unreacted aluminum), while the products of powder mixtures are represented by single MgAlON phase.
{"title":"Granulation Effect on Chemically Activated SHS of MgAlON","authors":"D. I. Abzalov, T. G. Akopdzhanyan, N. I. Abzalov, R. A. Kochetkov, V. V. Grachev","doi":"10.3103/s1061386223040106","DOIUrl":"https://doi.org/10.3103/s1061386223040106","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>MgAlON were prepared by self-propagation high temperature synthesis (SHS) using powder and granular mixtures of aluminum, aluminum oxide, magnesium oxide, and magnesium perchlorate. The influence of granulation of starting particles of Al + Al<sub>2</sub>O<sub>3</sub> + MgO + Mg(ClO<sub>4</sub>)<sub>2</sub> powder mixtures on the microstructure and phase composition of combustion products was studied. It was revealed that the granulation of mixtures reduces the combustion temperature and burning velocity. It was found that the combustion products derived from granular mixtures consists of up to four phases (MgAlON, aluminum oxide, aluminum nitride, and unreacted aluminum), while the products of powder mixtures are represented by single MgAlON phase.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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