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

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Synthesis of TiC–NiCr Composite from Granular Mixture: Different Methods of Adding Binder Components 颗粒状混合物合成TiC-NiCr复合材料：不同方法添加粘结剂组分
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-01-20 DOI: 10.3103/S1061386224700250
B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina, N. I. Abzalov
{"title":"Synthesis of TiC–NiCr Composite from Granular Mixture: Different Methods of Adding Binder Components","authors":"B. S. Seplyarskii,&nbsp;R. A. Kochetkov,&nbsp;T. G. Lisina,&nbsp;N. I. Abzalov","doi":"10.3103/S1061386224700250","DOIUrl":"10.3103/S1061386224700250","url":null,"abstract":"<p>The work investigated the modes of synthesis of titanium carbide with a nichrome binder from granular charges containing up to 30 wt % nichrome or a mixture of nickel and chromium powders taken in the same ratio as in the alloy. Using the conditions for the transition of combustion from conductive to convective mode, the impurity gas content in the studied mixtures was quantitatively assessed. It was shown that for mixtures of 0.6-mm granules, a safe conductive synthesis mode is realized. For charge of 1.7-mm granules, if a mixture of Ni and Cr powders was added to the initial sample, the convective combustion mode took place when Ti + C content was more than 90 wt %. When adding nichrome powder, the convective mode was caused by more than 80 wt % of Ti + C. Replacing the nichrome powder in the initial granular charge with mixture of Ni and Cr powders did not change the phase composition of the combustion products.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 4","pages":"273 - 279"},"PeriodicalIF":0.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995434","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
Cast Mo–Cr, W–Cr, and Cr–Al Master Alloys by Gravity-Assisted SHS Metallurgy 用重力辅助SHS冶金法铸造Mo-Cr， W-Cr和Cr-Al中间合金
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-01-20 DOI: 10.3103/S1061386224700274
A. N. Kubanova, D. M. Ikornikov, V. D. Sanin, D. A. Martynov
{"title":"Cast Mo–Cr, W–Cr, and Cr–Al Master Alloys by Gravity-Assisted SHS Metallurgy","authors":"A. N. Kubanova,&nbsp;D. M. Ikornikov,&nbsp;V. D. Sanin,&nbsp;D. A. Martynov","doi":"10.3103/S1061386224700274","DOIUrl":"10.3103/S1061386224700274","url":null,"abstract":"<p>Cast Mo–Cr, W–Cr, and Cr–Al master alloys were prepared via centrifugal SHS metallurgy. The effect of variation in component fractions in green mixtures (100 – α)(Cr<sub>2</sub>O<sub>3</sub> + Al) + α(MoO<sub>3</sub> + Al) and (100 – α)(Cr<sub>2</sub>O<sub>3</sub> + Al) + α(WO<sub>3</sub> + Al) on the synthesis of Mo–Cr and W–Cr alloys, respectively, was thermodynamically analyzed. Thermodynamic calculation of Cr–Al master alloy production was presented and provided the necessity of using a complex oxidizing agent, chromium(III) oxide and chromium(VI) oxide in a certain ratio. Experiments for Mo–Cr, W–Cr, and Cr–Al systems proved the necessity of applying overloading at an acceleration of no less than 50 <i>g</i> to prolong the lifetime of the melt. Introduction of functional additives CaF<sub>2</sub> (fluorspar) and sodium hexafluoroaluminate Na<sub>3</sub>[AlF<sub>6</sub>] (cryolite) to the green mixture lowered the melting temperature of the slag phase (reduced its viscosity) and facilitated the phase separation. EDS and mass spectroscopy analyses showed that the chemical compositions of synthesized master alloys are close to their calculated and target values. XRD results revealed the existence of solid solutions based on target elements.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 4","pages":"295 - 302"},"PeriodicalIF":0.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995314","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
Effect of Rare Earth (La3+) on the Structural, Microstructural, and Transport Properties of CoCr2O4 for Industrial Applications 稀土（La3+）对工业用CoCr2O4结构、显微组织和输运性能的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-01-20 DOI: 10.3103/S1061386224700353
V. H. Choudapur, Khalid A. Alrashidi, A. M. Sajjan, N. H. Ayachit,  Syed Farooq Adil, B. J. Fernandes, V. J. Angadi
{"title":"Effect of Rare Earth (La3+) on the Structural, Microstructural, and Transport Properties of CoCr2O4 for Industrial Applications","authors":"V. H. Choudapur,&nbsp;Khalid A. Alrashidi,&nbsp;A. M. Sajjan,&nbsp;N. H. Ayachit,&nbsp; Syed Farooq Adil,&nbsp;B. J. Fernandes,&nbsp;V. J. Angadi","doi":"10.3103/S1061386224700353","DOIUrl":"10.3103/S1061386224700353","url":null,"abstract":"<p>In the category of oxides, spinel oxides can be identified by their chemical formula. Spinel oxides have the structure AB<sub>2</sub>O<sub>4</sub> and are distinguished by their amazing magnetic, electric, and multiferroic properties. Additionally, they exhibit a wide variety of functional responses. A description of the experimental, structural, and electrical properties of Co<sub>1–x</sub>La<sub>x</sub>Cr<sub>2</sub>O<sub>4</sub> (where <i>x</i> = 0 and 0.05) was presented in this study for the very first time. During the course of the experimental characterization, data on AC conductivity and dielectric parameters, as well as XRD and SEM micrographs, were collected. It was demonstrated beyond a reasonable doubt that a spinel cubic structure is produced by the XRD characteristics of each sample. The scanning electron micrographs (SEM) showed that every single one of the samples is very porous. An overall increasing trend of the dielectric constant was seen in the La<sup>3+</sup> doped CoCr<sub>2</sub>O<sub>4</sub> sample as the concentration of La<sup>3+</sup> increased. This is a result of the probable hopping of Cr<sup>2+</sup> to Cr<sup>3+</sup>, as well as an increase in the average crystallite size with La doping. Koop’s phenomenological theory was utilized in order to provide an explanation for the AC conductivity, and the hopping process was utilized in order to characterize the electrical properties of each sample. All of the samples exhibited outstanding alternating current conductivity and a low dielectric loss tangent at higher frequency ranges throughout the whole spectrum.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 4","pages":"258 - 265"},"PeriodicalIF":0.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995432","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
Spray Solution Combustion Synthesis of In-Doped ZnO: The Fuel Effect on Microstructure and Thermoelectric Properties 喷雾溶液燃烧合成掺杂氧化锌：燃料对微观结构和热电特性的影响
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700171
Zh. S. Yermekova, E. V. Chernyshova, S. S. Yurlov, S. N. Yudin
{"title":"Spray Solution Combustion Synthesis of In-Doped ZnO: The Fuel Effect on Microstructure and Thermoelectric Properties","authors":"Zh. S. Yermekova,&nbsp;E. V. Chernyshova,&nbsp;S. S. Yurlov,&nbsp;S. N. Yudin","doi":"10.3103/S1061386224700171","DOIUrl":"10.3103/S1061386224700171","url":null,"abstract":"<p>ZnO is an earth abundant, safe, environmentally friendly, and relatively inexpensive resource for the application in the manufacturing of thermoelectric materials. In this work hollow spherical particles of Zn<sub>0.995</sub>In<sub>0.005</sub>O produced by the spray solution combustion synthesis (SSCS) with the stochiometric (φ<sub>1</sub>) and excessive (φ<sub>3</sub>) amount of glycine fuel were sintered at 900°C by the spark plasma sintering technique and thermoelectric properties of sintered Sφ<sub>1</sub> and Sφ<sub>3</sub> materials was measured. The best thermoelectric figure of merit <i>zT</i> ∼ 0.08 at 1050 K obtained for the materials produced at stoichiometric amount of fuel (φ<sub>1</sub>). It was shown that lower amount of fuel (φ<sub>1</sub>) used during the synthesis favors formation of porous and less textured structure which exhibits better thermoelectrical properties. The Lotgering factor (LF) calculated from the intensities of XRD (002) peaks was 0.65 for Sφ<sub>3</sub> sample, whereas for Sφ<sub>1</sub> sample LF (002) = 0.08. The average pore size of sintered Sφ<sub>1</sub> and Sφ<sub>3</sub> materials was around 200 nm. The total porosity was about 5–8% for Sφ<sub>1</sub> and 2–3% for Sφ<sub>3</sub> material.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"214 - 222"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214070","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
Spatial Gasless Combustion Modes in a Sample with Discrete Structure 离散结构样本中的空间无气燃烧模式
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700122
V. G. Prokof’ev
{"title":"Spatial Gasless Combustion Modes in a Sample with Discrete Structure","authors":"V. G. Prokof’ev","doi":"10.3103/S1061386224700122","DOIUrl":"10.3103/S1061386224700122","url":null,"abstract":"<p>Spatial modes of combustion of the donor–acceptor system were numerically modelled. The discrete character of the combustion wave was determined by the unit cell size. The burning velocity of the sample depending on the unit cubic cell size was calculated. It was shown that as unit cell size grows, the average burning velocity of the sample increases, which is explained by a decrease in the specific area of the cell contact boundaries. Single-hot point spin modes of combustion of the parallelepiped sample with a discrete structure were found.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"183 - 188"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214048","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
Exploring the Influence of Zinc Doping on Nano Ferrites: A Review of Structural, Dielectric, and Magnetic Studies 探索锌掺杂对纳米铁氧体的影响：结构、介电和磁性研究综述
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700110
R. C. Bharamagoudar, A. S. Patil, S. N. Mathad, L. B. Kankanawadi
{"title":"Exploring the Influence of Zinc Doping on Nano Ferrites: A Review of Structural, Dielectric, and Magnetic Studies","authors":"R. C. Bharamagoudar,&nbsp;A. S. Patil,&nbsp;S. N. Mathad,&nbsp;L. B. Kankanawadi","doi":"10.3103/S1061386224700110","DOIUrl":"10.3103/S1061386224700110","url":null,"abstract":"<p>Ferrites, known for their unique magnetic, structural, and electrical properties, have garnered significant attention across various scientific and industrial domains. This review provides a comprehensive analysis of the effects of zinc doping on three prominent ferrite materials: MnFe<sub>2</sub>O<sub>4</sub>, CuFe<sub>2</sub>O<sub>4</sub>, and CaFe<sub>2</sub>O<sub>4</sub>. Zinc doping, as a strategic method for tailoring these properties, has emerged as a promising avenue for enhancing their functionality and versatility. In the introduction part to the significance of ferrites, their wide-ranging applications are discussed. This review provides a basic overview of the many synthesis methods, such as co-precipitation, sol–gel, hydrothermal, solid-state etc., and a detailed investigating some nano ferrites. It then delves into the distinct characteristics of each ferrite, highlighting their magnetic behaviors, structural features, and electrical properties. The different methods to study the structural, magnetic, and dielectric properties are also discussed. The effects of zinc doping on MnFe<sub>2</sub>O<sub>4</sub>, CuFe<sub>2</sub>O<sub>4</sub>, and CaFe<sub>2</sub>O<sub>4</sub> ferrites are discussed comprehensively. This study extensively concentrates on recent industrial applications like photoluminescence, biomedical, and sensors using spinel ferrites.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"165 - 182"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214067","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
Pyrochlore-Based Matrix by SHS 利用热固性硅酸盐（SHS）制造基于火成岩的基质
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S106138622470016X
T. V. Barinova, V. Yu. Barinov, V. N. Semenova
{"title":"Pyrochlore-Based Matrix by SHS","authors":"T. V. Barinova,&nbsp;V. Yu. Barinov,&nbsp;V. N. Semenova","doi":"10.3103/S106138622470016X","DOIUrl":"10.3103/S106138622470016X","url":null,"abstract":"<p>Matrix based on pyrochlore Y<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> for immobilization of high-level radioactive waste was prepared via SHS process. The phase composition and structure of the synthesized matrices were characterized. The influence of aluminum additive and composition/amount of gases emitted during combustion on the porosity of the matrices was studied.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"209 - 213"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214073","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
Self-Propagating High-Temperature Synthesis of MgAlON Using Mg Powder 使用镁粉的自推进式高温合成 MgAlON
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700146
T. G. Akopdzhanyan, D. I. Abzalov
{"title":"Self-Propagating High-Temperature Synthesis of MgAlON Using Mg Powder","authors":"T. G. Akopdzhanyan,&nbsp;D. I. Abzalov","doi":"10.3103/S1061386224700146","DOIUrl":"10.3103/S1061386224700146","url":null,"abstract":"<p>MgAlON was prepared by self-propagating high-temperature synthesis using powder mixture of aluminum, aluminum oxide, magnesium oxide, magnesium, and magnesium perchlorate as an oxidizer. The effect of magnesium oxidation and aluminum nitriding reactions on the combustion parameters was studied. It was revealed that combustion temperature and burning velocity increase as Mg is added. It was found that the combustion products derived from mixtures containing magnesium powder have a fine-grained structure composed by only MgAlON.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"195 - 199"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214068","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
Multifunctional Catalysts Based on High-Entropy Transition Metal Alloys 基于高熵过渡金属合金的多功能催化剂
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700158
E. V. Pugacheva, S. Ya. Zhuk, I. M. Bystrova, K. A. Romazeva, D. M. Ikornikov, O. D. Boyarchenko, N. Yu. Khomenko, O. V. Belousova, V. N. Sanin, V. N. Borshch
{"title":"Multifunctional Catalysts Based on High-Entropy Transition Metal Alloys","authors":"E. V. Pugacheva,&nbsp;S. Ya. Zhuk,&nbsp;I. M. Bystrova,&nbsp;K. A. Romazeva,&nbsp;D. M. Ikornikov,&nbsp;O. D. Boyarchenko,&nbsp;N. Yu. Khomenko,&nbsp;O. V. Belousova,&nbsp;V. N. Sanin,&nbsp;V. N. Borshch","doi":"10.3103/S1061386224700158","DOIUrl":"10.3103/S1061386224700158","url":null,"abstract":"<p>High-entropy alloys were produced by centrifugal self-propagating high-temperature synthesis and used as precursors for preparation of catalysts for CO and propane deep oxidation and CO<sub>2</sub> hydrogenation. The precursors were converted into catalysts by aluminum leaching and stabilization with hydrogen peroxide solution. Prepared FeCoNiCu, FeCoNiCuMo, FeCoNiCuMn, and FeCoNiCuCr catalysts were characterized by XRD, SEM/EDS, and BET methods and tested in the processes of deep oxidation of CO and propane and methanation of CO<sub>2</sub>. The highest CO<sub>2</sub> conversion, 50.6%, with methane selectivity of 77.5% was achieved on FeCoNiCu catalyst at 400°C. The best catalyst for the deep oxidation process was shown to be FeCoNiCuCr, on which the temperature of 100% CO conversion was 250°C and 100% conversion of propane was achieved at 450°C.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"200 - 208"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214069","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
Evidence of an Oscillating Reaction during Heating of TiH2 in Air 在空气中加热 TiH2 时发生振荡反应的证据
IF 0.5
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-09-06 DOI: 10.3103/S1061386224700213
S. G. Vadchenko, A. S. Rogachev
{"title":"Evidence of an Oscillating Reaction during Heating of TiH2 in Air","authors":"S. G. Vadchenko,&nbsp;A. S. Rogachev","doi":"10.3103/S1061386224700213","DOIUrl":"10.3103/S1061386224700213","url":null,"abstract":"<p>A new phenomenon was discovered: an oscillatory combustion mode of hydrogen releasing under the non-isothermal decomposition of titanium hydride in air.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 3","pages":"245 - 248"},"PeriodicalIF":0.5,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214075","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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