International Journal of Self-Propagating High-Temperature Synthesis最新文献_第6页

High-Temperature Synthesis of V2AlC MAX Phase: Influence of Al 高温合成V2AlC MAX相：Al的影响

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-08-27 DOI: 10.3103/S1061386225700189

V. A. Gorshkov, P. A. Miloserdov, I. D. Kovalev

引用次数: 0

Influence of Impurity Gases on Combustion of Ti + 2B Mixture 杂质气体对Ti + 2B混合气燃烧的影响

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-08-27 DOI: 10.3103/S1061386225700190

Yu. V. Bogatov, V. A. Shcherbakov

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Features of Combustion Wave Propagation in Ni–Al/quartz glass/Ni–Al System Ni-Al /石英玻璃/ Ni-Al体系中燃烧波的传播特性

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-08-27 DOI: 10.3103/S1061386225700128

V. G. Prokof’ev

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Influence of Fuel Composition in Solution Combustion Synthesis on the Structure and Thermoelectric Properties of La-Doped SrTiO3 溶液燃烧合成中燃料成分对la掺杂SrTiO3结构和热电性能的影响

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-08-27 DOI: 10.3103/S1061386225700165

E. Chernyshova, S. Yudin, K. Podbolotov, K. Kuskov, D. Moskovskikh, V. Khovaylo

{"title":"Influence of Fuel Composition in Solution Combustion Synthesis on the Structure and Thermoelectric Properties of La-Doped SrTiO3","authors":"E. Chernyshova, S. Yudin, K. Podbolotov, K. Kuskov, D. Moskovskikh, V. Khovaylo","doi":"10.3103/S1061386225700165","DOIUrl":"10.3103/S1061386225700165","url":null,"abstract":"High-temperature thermoelectric SrTiO3 powders, including La-doped (Sr0.95La0.05)TiO3, were synthesized using solution combustion synthesis. It was found that using urea as the organic fuel leads to the formation of a polyphase material consisting of 80 wt % SrTiO3 and 20 wt % TiO2 along with Sr2TiO4. The introduction of a fuel mixture of urea and glycine into the reaction solution significantly improved homogeneity of the powder, increasing the proportion of the target phase to 95 wt %. Spark plasma sintering further homogenized the powder, reducing amount of the impurity phase TiO2 to less than 5 wt %. The study demonstrated that doping, phase composition, and porosity have a significant impact on the thermoelectric properties of SrTiO3. The presence of TiO2 secondary phase and porosity was shown to regulate the material’s electrical and thermal conductivities. La doping affected the charge carrier concentration, and together with the other factors, enabled the production of a dense (Sr0.95La0.05)TiO3 sample with a figure of merit ZT ≈ 0.23 at 950 K. The findings underscore the significance of controlling phase composition, doping, and defect structure to enhance the thermoelectric performance of SrTiO3, paving the way for the design of energy-efficient materials applicable in thermal energy conversion technologies.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 3","pages":"180 - 191"},"PeriodicalIF":0.6,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905273","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 NiCo by Solution Combustion Synthesis Method 溶液燃烧合成法制备NiCo

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-08-27 DOI: 10.3103/S1061386225700153

N. Amirkhanyan, M. Zakaryan

{"title":"Preparation of NiCo by Solution Combustion Synthesis Method","authors":"N. Amirkhanyan, M. Zakaryan","doi":"10.3103/S1061386225700153","DOIUrl":"10.3103/S1061386225700153","url":null,"abstract":"In this study, NiCo composite materials were synthesized via the solution combustion synthesis (SCS) method using nickel and cobalt nitrates with hexamethylenetetramine as fuel. Thermodynamic calculations were first conducted to identify optimal fuel-to-oxidizer ratios (φ) and water content, revealing that the maximum adiabatic temperature (2670 K) occurs at φ = 1.25. Experimental results showed that combustion could not be initiated at φ = 0.5, while φ = 1.5 yielded the highest combustion temperature (1580 K) and a pure NiCo composite phase, as confirmed by XRD analysis. The synthesized materials exhibited a porous sintered microstructure with an average crystallite size of ~25 nm. Pressure variation from 0.1 to 1.5 MPa had negligible influence on the phase composition but significantly affected combustion wave velocity, which increased by two orders of magnitude. SEM analysis confirmed that all samples retain porous and sintered morphology, with higher pressures leading to more pronounced sintering. These results demonstrate that the SCS method enables the rapid and effective synthesis of structurally uniform NiCo composites with tunable properties.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 3","pages":"172 - 179"},"PeriodicalIF":0.6,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905272","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

Features of High-Temperature Synthesis of Cu–Al–Ag Eutectic Alloy: Microstructure and Electrophysical Properties 高温合成Cu-Al-Ag共晶合金的特点：显微组织和电物理性能

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI: 10.3103/S1061386225700098

O. D. Boyarchenko, S. G. Vadchenko, A. V. Karpov, A. E. Sytschev

引用次数: 0

Solid-State Self-Propagating Combustion Synthesis of Surface Oxidized Copper Nanoparticles and Specific Capacitance Studies 固体自传播燃烧合成表面氧化铜纳米颗粒及其比电容研究

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI: 10.3103/S1061386225700013

R. Sudarshana, R. Sambasivam, M. Prakash, B. Divyashree, R. Balan

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Direct Nitriding of Iron Powder by means of Chemical Oven Technique 化学炉法直接氮化铁粉

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI: 10.3103/S1061386225700037

T. V. Barinova, E. I. Volchenko, G. R. Nigmatullina, M. I. Alymov

引用次数: 0

Synthesis of Titanium Carbonitride from a Granular Charge in a Constant Pressure Bomb 恒压弹中颗粒装药合成碳氮化钛

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI: 10.3103/S1061386225700050

B. S. Seplyarskii, N. I. Abzalov, R. A. Kochetkov, O. M. Miloserdova, T. G. Lisina

{"title":"Synthesis of Titanium Carbonitride from a Granular Charge in a Constant Pressure Bomb","authors":"B. S. Seplyarskii, N. I. Abzalov, R. A. Kochetkov, O. M. Miloserdova, T. G. Lisina","doi":"10.3103/S1061386225700050","DOIUrl":"10.3103/S1061386225700050","url":null,"abstract":"Titanium carbonitride was synthesized for the first time in a closed reactor (constant pressure bomb) from granular mixtures Ti + 0.5C and TiC + Ti. Changes in sample mass, titanium carbide particle size, and granule size had a weak effect on the phase composition of the product. As in the case of synthesis of powder charge, the determining factor for increasing the nitrogen content in titanium carbonitride was an increase in nitrogen pressure. Chemical analysis showed that the product obtained from Ti + 0.5C granular mixture at a pressure of 16 atm contains 5.1% nitrogen, which is close to 6% in titanium carbonitride synthesized from bulk-density powder charge. Replacing Ti + 0.5C with TiC + Ti led to an increase in the nitrogen content to 9% for both granular and powder mixtures. Thus, the nitrogen content in products synthesized in a constant pressure bomb at 4–16 atm was independent of green mixture structure. According to XRD data, the product with composition close to TiC0.5N0.5 was obtained from more massive TiC + Ti granular mixture, which is associated with a longer cooling time. In contrast to the synthesis from powder mixtures, titanium carbonitride granules were easily crushed into powders.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 2","pages":"101 - 106"},"PeriodicalIF":0.6,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168321","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

Synthesis, Structural, Electrical, and Dielectric Properties of Sm3+ Substituted Ni–Cu Ferrites Sm3+取代镍铜铁氧体的合成、结构、电学和介电性能

IF 0.6

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI: 10.3103/S1061386225700104

S. M. Patil, S. S. Potdar, P. B. Belavi, B. K. Bammannavar, G. N. Chavan, S. A. Malladi, K. A. Thabaj, M. K. Rendale, L. R. Naik

{"title":"Synthesis, Structural, Electrical, and Dielectric Properties of Sm3+ Substituted Ni–Cu Ferrites","authors":"S. M. Patil, S. S. Potdar, P. B. Belavi, B. K. Bammannavar, G. N. Chavan, S. A. Malladi, K. A. Thabaj, M. K. Rendale, L. R. Naik","doi":"10.3103/S1061386225700104","DOIUrl":"10.3103/S1061386225700104","url":null,"abstract":"The series of Sm3+ substituted nickel copper ferrites, Ni0.5Cu0.5SmxFe2–xO4 with (x = 0.1, 0.2, and 0.3), was synthesized by standard double sintered ceramic technique. The phase analysis was characterized by X-ray diffraction studies, which confirmed the creation of single phase. Crystallite size was calculated by using Debye Scherer formula for high intensity peak and found to be in the range from 71 to 90 nm. Surface morphology was studied using a scanning electron microscope and no cluster was observed. The elemental composition of synthesized samples was verified by using energy dispersive spectroscopy and no other elements were detected in the ferrites. Owing to interatomic vibrations in tetrahedral and octahedral sites of present samples two absorption bands were formed which were detected from the spectrum produced by means of Fourier transform infrared spectroscopy. Conductivity of Sm substituted nickel copper ferrites was determined by studying the variation of DC resistivity of ferrites with the temperature. Maxwell–Wagner interfacial polarization in present samples was detected through the use of dielectric spectroscopy and declined when the applied frequency was raised. Dielectric characteristics such as change in dielectric constant, dielectric loss, and AC conductivity versus frequency were studied.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 2","pages":"139 - 145"},"PeriodicalIF":0.6,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169002","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