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International Journal of Self-Propagating High-Temperature Synthesis最新文献

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Thermoelectric Properties of Al(1–x)MnSi(1+x) Alloy Prepared by Self-Propagating High-Temperature Synthesis 自蔓延高温合成Al(1 - x)MnSi（1+x）合金的热电性能
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700444
A. O. Sivakova, A. V. Karpov, P. A. Lazarev, A. E. Sytschev
{"title":"Thermoelectric Properties of Al(1–x)MnSi(1+x) Alloy Prepared by Self-Propagating High-Temperature Synthesis","authors":"A. O. Sivakova,&nbsp;A. V. Karpov,&nbsp;P. A. Lazarev,&nbsp;A. E. Sytschev","doi":"10.3103/S1061386224700444","DOIUrl":"10.3103/S1061386224700444","url":null,"abstract":"<p>The thermoelectric alloy consisting of Al<sub>(1–x)</sub>MnSi<sub>(1+x)</sub> (Al<sub>2.5</sub>Mn<sub>3.0</sub>Si<sub>3.5</sub> and Al<sub>0.75</sub>Mn<sub>1.0</sub>Si<sub>1.25</sub>), Mn<sub>3</sub>Al, MnSi, and unreacted Si was prepared via self-propagating high-temperature synthesis. The microstructure of the alloy was shown to be porous and mainly represented by coarse Al<sub>(1–<i>x</i>)</sub>MnSi<sub>(1+<i>x</i>)</sub> grains (15–60 μm in size). Thermoelectric characteristics of synthesized material were studied. It was found that the Seebeck coefficient is –29 μV/K at room temperature and reaches –8 μV/K at 800 K. The maximum specific electrical resistance of 9.5 Ω cm was observed at room temperature.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"71 - 75"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865470","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}
引用次数: 0
Solution Combustion Synthesis of La0.9Me0.1MnO3 ± y Powders in Nitrate–Polyvinyl Alcohol and Nitrate–Polyvinylpyrrolidone Systems 硝酸-聚乙烯醇和硝酸-聚乙烯吡啶酮体系中La0.9Me0.1MnO3±y粉体的溶液燃烧合成
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700389
A. E. Permyakova, O. V. Russkikh, A. A. Ostroushko
{"title":"Solution Combustion Synthesis of La0.9Me0.1MnO3 ± y Powders in Nitrate–Polyvinyl Alcohol and Nitrate–Polyvinylpyrrolidone Systems","authors":"A. E. Permyakova,&nbsp;O. V. Russkikh,&nbsp;A. A. Ostroushko","doi":"10.3103/S1061386224700389","DOIUrl":"10.3103/S1061386224700389","url":null,"abstract":"<p>The processes occurring during the synthesis of lanthanum manganites doped with alkali metal ions in combustion reactions in the nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems were investigated. The maximum combustion temperatures of compositions depending on the organic fuel content φ (ratio to stoichiometric amount) were given. It was found that the maximum temperature of the process is 531°C, which is reached when synthesizing LaMnO<sub>3 ± <i>y</i></sub> sample from the composition with polyvinyl alcohol (φ = 4). It was experimentally shown that the maximum combustion temperature increases with increasing organic component amount in the composition and decreasing pyrolytic impurity gas (such as carbon monoxide CO, nitrogen oxides NO and NO<sub>2</sub>) concentrations. The processes of charge generation during combustion of nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems at different types of heating of the reactor were studied. The effect of synthesis conditions on the specific surface area of complex oxides was investigated.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"16 - 32"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865540","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}
引用次数: 0
SHS of TiC–Graphite Porous Composites and Carbon Graphitization tic -石墨多孔复合材料的SHS与碳石墨化
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700407
E. R. Umerov, A. P. Amosov, E. I. Latukhin, V. A. Novikov
{"title":"SHS of TiC–Graphite Porous Composites and Carbon Graphitization","authors":"E. R. Umerov,&nbsp;A. P. Amosov,&nbsp;E. I. Latukhin,&nbsp;V. A. Novikov","doi":"10.3103/S1061386224700407","DOIUrl":"10.3103/S1061386224700407","url":null,"abstract":"<p>The possibility was considered of using self-propagating high-temperature synthesis (SHS) in open air to obtain porous titanium carbide composites containing free graphite. The effect of graphite excess in the Ti + (1 + <i>х</i>)C charge (where <i>x</i> = 0.5, 1.0, and 1.5) and pressing pressure on the porosity of the SHS-derived TiC–C composite, as well as on the size of pores and TiC and graphite particles was shown. The direct proof of the possibility of fast graphitization of such amorphous carbon form as carbon black under conditions of SHS of porous TiC–C composites was given.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"42 - 49"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865398","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}
引用次数: 0
Preparation of High Pure α-Al2O3 from Aluminum Dross by Self-Heat Generating Method 铝渣自生热法制备高纯α-Al2O3
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700419
U. Singh, J. Pendam, M. Tirpude, P. Yadav, A. Agnihotri
{"title":"Preparation of High Pure α-Al2O3 from Aluminum Dross by Self-Heat Generating Method","authors":"U. Singh,&nbsp;J. Pendam,&nbsp;M. Tirpude,&nbsp;P. Yadav,&nbsp;A. Agnihotri","doi":"10.3103/S1061386224700419","DOIUrl":"10.3103/S1061386224700419","url":null,"abstract":"<p>Due to its excellent engineering properties, aluminum has become an important material for processing industries. As the demand for aluminum increased, a large amount of waste aluminum dross was generated during the aluminum smelting process. The aluminum dross contained aluminum nitride and would cause odor while being disposed in landfill, making the aluminum dross disposal a tough issue. Therefore, the aluminum dross was mostly stored in the original plants. The objective of this study was to develop an economically feasible and environmentally friendly technology to recover aluminum dross. Aluminum dross ranges from 1–2% of the aluminum manufactured and comprises 30–70% aluminum by weight. 1 ton of aluminum metal production generates 10 to 20 kg of dross. Currently, in India, there is very limited organized processing of dross. The world produces approximately 65 million tons of aluminum per annum, which results in approximately 1 million tons of aluminum dross being produced every year. Furthermore, almost 100 000 of these are produced in India. Hence, the environmental impact of this waste is a global problem that needs to be addressed on priority. In this paper, a new method is developed to prepare a high pure α-alumina (99% purity) from aluminum dross by self-heat generating, one-step combustion method at 500°C furnace temperature.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"50 - 55"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865399","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}
引用次数: 0
Reaction Initiation by Laser in Ti–Al–CuO Powder Mixture 激光在Ti-Al-CuO粉末混合物中引发反应
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700365
A. G. Knyazeva, M. G. Krinitcyn
{"title":"Reaction Initiation by Laser in Ti–Al–CuO Powder Mixture","authors":"A. G. Knyazeva,&nbsp;M. G. Krinitcyn","doi":"10.3103/S1061386224700365","DOIUrl":"10.3103/S1061386224700365","url":null,"abstract":"<p>The paper described the data of a preliminary experiment on laser-initiated reactions in a mixture of Ti–Al–CuO powders. A two-dimensional model of laser initiation of reactions in a powder layer located on a substrate was presented. The laser beam moved along the surface according to a given trajectory. Chemical transformations were simulated by a total scheme including the main stages (decomposition of copper oxide CuO to Cu<sub>2</sub>O, metallothermic reactions leading to the formation of titanium and aluminum oxides, and the total reaction of matrix formation). The model was realized numerically. It was found that the process of composite synthesis can be divided into two stages. The first one consisted in partial decomposition of copper oxide; the second stage was a controlled process, when reactions took place only in the area of laser beam action. The results of the theory were found to be in qualitative agreement with the experimental data.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"1 - 9"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865396","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}
引用次数: 0
Regularities of Combustion of Ti + 2B Mixture: Mechanical Activation of Boron Ti + 2B混合物燃烧规律：硼的机械活化
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700432
Yu. V. Bogatov, V. A. Shcherbakov
{"title":"Regularities of Combustion of Ti + 2B Mixture: Mechanical Activation of Boron","authors":"Yu. V. Bogatov,&nbsp;V. A. Shcherbakov","doi":"10.3103/S1061386224700432","DOIUrl":"10.3103/S1061386224700432","url":null,"abstract":"<p>TiB<sub>2</sub> ceramics were produced by forced SHS compaction. The influence of preliminary mechanical activation of boron powder on the properties and combustion characteristics of Ti + 2B reaction mixture was studied. Mechanically activated boron powder was shown to become plastic under a pressure above 30 MPa. In mixtures with titanium, activated boron acted as a lubricant allowing free movement of coarser titanium particles relative to each other and consolidation to higher density values (0.8) without intensive growth of contact surface between the titanium particles (Ti–Ti). Mechanical activation was found to increase the contact surface between reactants (Ti–B) and consequently, the combustion temperature up to 3000°C.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"65 - 70"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865469","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}
引用次数: 0
Influence of Gravitational Forces on the Stability of Quasi-Isobaric Combustion of a Titanium Powder Layer 重力对钛粉层准等压燃烧稳定性的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700377
P. M. Krishenik, S. V. Kostin, S. A. Rogachev
{"title":"Influence of Gravitational Forces on the Stability of Quasi-Isobaric Combustion of a Titanium Powder Layer","authors":"P. M. Krishenik,&nbsp;S. V. Kostin,&nbsp;S. A. Rogachev","doi":"10.3103/S1061386224700377","DOIUrl":"10.3103/S1061386224700377","url":null,"abstract":"<p>The regularities of filtration combustion of porous layer of titanium powder in adjacent inclined channels were studied. The influence of gravitational forces on combustion stability, change of gas filtration modes during combustion, and formation and propagation of cellular afterburning waves was analyzed.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"10 - 15"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865539","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}
引用次数: 0
Time-Resolved X-ray Diffraction Study of Phase Transformations in TiC–CoCrFeNiCu System during SHS SHS过程中TiC-CoCrFeNiCu体系相变的时间分辨x射线衍射研究
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700456
A. S. Rogachev, I. D. Kovalev, M. R. Sharafutdinov, D. Yu. Kovalev, S. G. Vadchenko
{"title":"Time-Resolved X-ray Diffraction Study of Phase Transformations in TiC–CoCrFeNiCu System during SHS","authors":"A. S. Rogachev,&nbsp;I. D. Kovalev,&nbsp;M. R. Sharafutdinov,&nbsp;D. Yu. Kovalev,&nbsp;S. G. Vadchenko","doi":"10.3103/S1061386224700456","DOIUrl":"10.3103/S1061386224700456","url":null,"abstract":"<p>The article presents the results of a study of the dynamics of structure formation in the ceramic–metal material TiC–CoCrFeNiCu with a high-entropy binder in the self-propagating high-temperature synthesis (SHS) mode. The studies were carried out in situ using dynamic X-ray and synchrotron radiation diffraction (“diffraction cinema”). It was shown that these two methods complement each other and allow one to obtain a fairly complete picture of the evolution of phase composition and crystal structure of multicomponent systems during SHS. The results obtained demonstrate new possibilities for direct experimental study of structure formation in high-entropy materials.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"76 - 80"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865471","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}
引用次数: 0
Fuel Effect on the Structural, Morphological, and Electrical Properties of Perovskite-Type Mixed Oxide La0.7Ca0.3Mn1–xNixO3 (x = 0 and 0.07) Synthesized through Gel Combustion 燃料对凝胶燃烧合成钙钛矿型混合氧化物La0.7Ca0.3Mn1-xNixO3 （x = 0和0.07）结构、形态和电学性能的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700390
S. L. Amaya Bustos, A. Gómez Zapata, J. D. Ortega Mesa, O. Morán, E. Chavarriaga
{"title":"Fuel Effect on the Structural, Morphological, and Electrical Properties of Perovskite-Type Mixed Oxide La0.7Ca0.3Mn1–xNixO3 (x = 0 and 0.07) Synthesized through Gel Combustion","authors":"S. L. Amaya Bustos,&nbsp;A. Gómez Zapata,&nbsp;J. D. Ortega Mesa,&nbsp;O. Morán,&nbsp;E. Chavarriaga","doi":"10.3103/S1061386224700390","DOIUrl":"10.3103/S1061386224700390","url":null,"abstract":"<p>The solution combustion synthesis method was used to prepare samples with stoichiometric La<sub>0.7</sub>Ca<sub>0.3</sub>Mn<sub>1–x</sub>Ni<sub>x</sub>O<sub>3</sub> (<i>x</i> = 0 and 0.07) using glycine and tris(hydroxymethyl)aminomethane (TRIS) as fuels. X-ray diffraction showed that the samples crystallized into an orthorhombic structure of the <i>Pnma</i> space group with slight changes in the lattice parameters according to the type of fuel used, which can be attributed to their heat capacity. Likewise, using the transmission electron microscope technique, conglomerates of particles with relatively uniform morphology and crystallite sizes that varied in a range of 17–26 nm were observed. The electrical behavior exhibited a metal–semiconductor transition that displaced the temperature peak towards lower values, according to the Ni content. It was concluded that the properties of this type of complex inorganic oxide such as manganites can be varied with the use of different fuels in the synthesis process.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"33 - 41"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865472","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}
引用次数: 0
Modifying Zinc Oxide Nanoparticles: The Role of Cobalt Doping on Structural and Mechanical Behavior 修饰氧化锌纳米颗粒：钴掺杂对结构和力学行为的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-04-23 DOI: 10.3103/S1061386224700420
P. Patil, B. Sannakki, S. Mathad, R. Pujar
{"title":"Modifying Zinc Oxide Nanoparticles: The Role of Cobalt Doping on Structural and Mechanical Behavior","authors":"P. Patil,&nbsp;B. Sannakki,&nbsp;S. Mathad,&nbsp;R. Pujar","doi":"10.3103/S1061386224700420","DOIUrl":"10.3103/S1061386224700420","url":null,"abstract":"<p>In the present study, a series of pure and cobalt-doped zinc oxide nanoparticle samples with different concentrations (15, 25, 35, and 45%) of cobalt were successfully synthesized using sol–gel auto-combustion method followed by annealing at 800°C. The crystal structure was characterized using an X-ray diffractometer, revealing that all synthesized samples had hexagonal wurtzite structure. The lattice constants (<i>a</i> and <i>c</i>), crystallite sizes (<i>D</i>), unit cell volume (<i>V</i>), and microstrain (ε) were reported. The Williamson–Hall plot and size–strain plot were also employed to understand the structural and mechanical attributes of the synthesized samples.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"56 - 64"},"PeriodicalIF":0.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865467","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}
引用次数: 0
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