Combustion, Explosion, and Shock Waves最新文献

Self-Propagating High-Temperature Synthesis of Layered Composite Ti/Hf/Ta/Ni/Ceramics Materials 自蔓延高温合成层状复合 Ti/Hf/Ta/Ni/Ceramics 材料

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010118

O. K. Kamynina, S. G. Vadchenko, I. D. Kovalev, D. V. Prokhorov

{"title":"Self-Propagating High-Temperature Synthesis of Layered Composite Ti/Hf/Ta/Ni/Ceramics Materials","authors":"O. K. Kamynina, S. G. Vadchenko, I. D. Kovalev, D. V. Prokhorov","doi":"10.1134/s0010508224010118","DOIUrl":"https://doi.org/10.1134/s0010508224010118","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper describes the compounds of refractory metal foils (Ti, Hf, Ta, and Ni) with ceramic layers formed as a result of combustion of reaction tapes rolled from Ti + 0.65C, Ti + 1.7B, and 5Ti + 3Si powder mixtures. Scanning electron microscopy and X-ray diffraction analysis are applied to study the microstructure, elemental composition, and phase composition of multilayer composites obtained by self-propagating high-temperature synthesis. The effect of synthesis conditions (initial temperature and applied pressure) and the initial structure of the samples on various parameters (combustion wave front propagation velocity, microstructure, phase composition, and strength properties) of the resulting layered materials is revealed. It is shown that compounds of metal foils and reaction tapes rolled from powder mixtures during combustion are ensured due to reaction diffusion, mutual impregnation, and chemical reactions occurring in the reaction tapes and on the surface of metal foils. The strength properties of the resulting materials (up to 275 MPa at 25°C and up to 72 MPa at 1100°C) are determined using a three-point loading scheme. The results of this study can contribute to the development of structural materials operating under extreme conditions.</p>","PeriodicalId":10509,"journal":{"name":"Combustion, Explosion, and Shock Waves","volume":"140 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140636871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Titanium Nitride Synthesis during Double Mechanical Activation of Titanium—in Argon and in Nitrogen 氩气和氮气双重机械活化钛过程中氮化钛的合成

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010106

O. V. Lapshin, O. A. Shkoda

引用次数: 0

Synthesis of a Nitrided Composite Material from Ferroalumosilicozirconium during Combustion 在燃烧过程中合成氮化铁硅锆复合材料

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s001050822401009x

K. A. Bolgaru, A. A. Reger

引用次数: 0

Experimental Study of the Flame Structure and Heat and Mass Transfer in a Hydrogen Jet Exhausting from a Slot into Air 从狭缝排入空气的氢气射流中的火焰结构和传热传质实验研究

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010015

B. F. Boyarshinov, S. Yu. Fedorov, R. Kh. Abdrakhmanov, V. S. Naumkin

引用次数: 0

Diffusion and Thermal Diffusion Coefficients of a Binary Mixture in the Van der Waals Model 范德华模型中二元混合物的扩散系数和热扩散系数

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010155

A. B. Medvedev

{"title":"Diffusion and Thermal Diffusion Coefficients of a Binary Mixture in the Van der Waals Model","authors":"A. B. Medvedev","doi":"10.1134/s0010508224010155","DOIUrl":"https://doi.org/10.1134/s0010508224010155","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Model expressions are obtained for the concentration diffusion coefficient and thermal diffusion factor of a binary mixture obeying the Van der Waals equation of state. Model calculations at elevated pressure (density) require the equation of state parameters and thermal diffusion factor of the mixture in a low-density ideal gas state. The behavior of the model relations is studied as a function of pressure along isotherms. Near the critical state, the model diffusion coefficient has a minimum and the thermal diffusion coefficient has a maximum. The diffusion and thermal diffusion models at elevated pressure are compared with experimental data for a number of mixtures. It is shown that they are in qualitative and generally quantitative agreement at different temperatures and component concentrations. The Van der Waals equation is not quite suitable for describing experimental data on compressibility and phase equilibrium at high pressure. This requires more complex and flexible modifications of the equation. Generalized expressions are given for model diffusion characteristics of the binary mixture in the case of such equations of state.</p>","PeriodicalId":10509,"journal":{"name":"Combustion, Explosion, and Shock Waves","volume":"115 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140637119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetics and Composition of Gaseous Products of Pyrolysis of Organometallic Complexes of Nickel, Iron, and Copper with Inorganic Anions 镍、铁和铜与无机阴离子的有机金属络合物热解动力学及气态产物的组成

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010040

A. G. Shmakov, A. A. Paletsky, O. V. Netskina, K. A. Dmitruk, O. V. Komova, S. A. Mukha

引用次数: 0

Synthesis of Oxynitride Composites during Combustion of a Ferrosilicon–Natural Mineral–Aluminum Mixture in Nitrogen 在氮气中燃烧硅铁-天然矿物-铝混合物时合成氮氧化物复合材料

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010088

O. G. Kryukova, A. A. Nevmyvaka, A. A. Akulinkin, T. V. Tatarinova

{"title":"Synthesis of Oxynitride Composites during Combustion of a Ferrosilicon–Natural Mineral–Aluminum Mixture in Nitrogen","authors":"O. G. Kryukova, A. A. Nevmyvaka, A. A. Akulinkin, T. V. Tatarinova","doi":"10.1134/s0010508224010088","DOIUrl":"https://doi.org/10.1134/s0010508224010088","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Targeted synthesis of oxynitride composites is implemented by means of organizing coupled processes. Interaction of ferrosilicon with nitrogen during combustion is considered as the main (inducing) process. The phase composition of the products of the coupled processes is determined by the chemical and phase compositions of the components added to ferrosilicon before performing self-propagating high-temperature synthesis. The influence of the basic products of the synthesis on the burning rate, fraction of nitrogen, phase composition, and morphology of synthesis products is considered. Chemical stages of ferrosilicon interaction with additives of natural minerals (zircon, ilmenite, and shungite) and aluminum in a nitrogen medium are demonstrated. The phase composition is determined by chemical transformations in a combustion wave. It is found that addition of aluminum leads to reduction or elimination of the Si<sub>2</sub>N<sub>2</sub>O phase in synthesis products with an increase in the aluminum fraction and obtaining composites based on the Si<sub>3</sub>N<sub>4</sub> (SiAlON) solid solution. The microstructure of combustion products is presented by aggregates (5–10 <span>(mu)</span>m) composed of small faceted crystals, shapeless structures, and crystal flakes. Oxynitride composites with an open porosity value of 51.0–68.8% are obtained.</p>","PeriodicalId":10509,"journal":{"name":"Combustion, Explosion, and Shock Waves","volume":"140 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140636767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Equilibrium Composition of Products in a Hafnium Dioxide–Calcium–Nitrogen–Carbon Mixture at Adiabatic Combustion Temperature 绝热燃烧温度下二氧化铪-钙-氮-碳混合物中产物的平衡成分

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010076

A. N. Avramchik, B. Sh. Braverman

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Numerical Simulation of Oblique Detonation Initiation by a High-Velocity Projectile Flying in a Hydrogen–Air Mixture 氢气-空气混合物中高速飞行弹丸斜向引爆的数值模拟

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010039

I. A. Bedarev, A. A. Syrovaten, V. M. Temerbekov

引用次数: 0

Improvement of the Ignition Performance and Reaction Rate of Boron by Surface Modification 通过表面改性提高硼的点火性能和反应速率

IF 1.2 4区工程技术

Combustion, Explosion, and Shock Waves Pub Date : 2024-04-22 DOI: 10.1134/s0010508224010131

J. Liu, D. Wang, Zh. Zhang, F. Li

{"title":"Improvement of the Ignition Performance and Reaction Rate of Boron by Surface Modification","authors":"J. Liu, D. Wang, Zh. Zhang, F. Li","doi":"10.1134/s0010508224010131","DOIUrl":"https://doi.org/10.1134/s0010508224010131","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Boron is one of the most valuable fuels for rocket propellants. However, the boron oxide (B<sub>2</sub>O<sub>3</sub>) on the B surface has a high boiling point (1860°C), which hinders the contact between the internal active B and the oxidation component during the ignition and combustion process. As a result, the ignition energy of B is higher and the combustion reaction rate is lower. In order to improve the ignition performance and reaction rate of B, a surface modification of B by means of surface purification by a solvent, surface grafting, and making a composite with aluminum (Al), which has a high combustion temperature, has been prepared. Composite particles of B purified by ethanol and thick flake Al (TF-Al), denoted by EB/TF-Al, have the fastest reaction rate higher by 96.6% than that of raw B and TF-Al composite particles (RB/TF-Al). Surface grafting of B with TF-Al composite particles (KHB-3/TF-Al) ensure the minimum ignition energy, which is 29.1% lower than that of raw B. As the ignition performance and reaction rate of B are improved by means of surface modification, the performance of B-based rocket propellants is expected to be improved.</p>","PeriodicalId":10509,"journal":{"name":"Combustion, Explosion, and Shock Waves","volume":"40 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140636884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0