NOVYE OGNEUPORY (NEW REFRACTORIES)最新文献_第4页

Study of the effect of high-temperature annealing on the structure and properties of a composite material based on TiC/TiB2/Ti3SiC2 高温退火对基于 TiC/TiB2/Ti3SiC2 的复合材料的结构和性能的影响研究

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-8-48-53

A. Konstantinov, A. Chizhikov, M. Antipov, P. Bazhin, N. Y. Khomenko

引用次数: 0

Acid-resistant material was obtained on the basis of metallurgy waste without the use of traditional natural materials 在不使用传统天然材料的情况下，利用冶金废料获得了耐酸材料

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-6-44-51

V. Abdrakhimov, E. Abdrakhimova

引用次数: 0

Determination of the influence of the incoming flow on the vortex zones at the entrance to the suction sockets. Part 1. The Axisymmetric problem 确定流入气流对吸气口涡流区的影响。第 1 部分：轴对称问题轴对称问题

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-6-67-71

A. K. Logacheva, O. Averkova, A. Ziganshin, K. Logachev, E. Popov

引用次数: 0

Effect of calcium aluminate-based additive on properties of periclase-carbon refractories for steelteeming ladles 铝酸钙基添加剂对用于钢水包的过氧化钙-碳耐火材料性能的影响

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-8-38-43

A. O. Migashkin

{"title":"Effect of calcium aluminate-based additive on properties of periclase-carbon refractories for steelteeming ladles","authors":"A. O. Migashkin","doi":"10.17073/1683-4518-2023-8-38-43","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-8-38-43","url":null,"abstract":"Premature decommissioning of steel-teeming ladle lining due to critical localized damage, whichi significantly reduces the functional properties of the lining, is one of the most acute problems in modern metallurgy. The main type of products used for steel-teeming ladle lining is periclase-carbon. In order to improve corrosion resistance and resistance to thermomechanical loads, additional additives, such as spinel, and high alumina CMA cement, are introduced into the periclase-carbon products. In this paper, the effect of calcium aluminate-based additive on the properties of periclasecarbon refractories is investigated. It is assumed that there is a potential for the formation of magnesium aluminate spinel (MA) in periclase-carbon products with calcium-aluminate additives during heat treatment. Fused periclase was used as the raw material, the carbon component was represented by natural flake graphite in an amount of 10 wt% and a combined binder. An additive based on calcium aluminates was introduced, with a fractional size from 0 to 3 mm, while the amount of main fractions of fused periclase was reduced by the corresponding amount of the additive introduced. The compressive strength, apparent porosity, and bending strength values before and after coking firing were analyzed. The thermal coefficient of linear expansion, phase composition and microstructure of the products were also investigated.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"344 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204579","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

Using the surface energy of nanoparticles to produce high-strength concrete 利用纳米颗粒的表面能生产高强度混凝土

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-8-21-27

A. M. Sycheva

引用次数: 0

Effect of electrolyte composition on the structure and tribological properties of ceramic coatings obtained by microarc oxidation 电解质成分对微弧氧化法获得的陶瓷涂层的结构和摩擦学特性的影响

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-10-31-39

A. Bykova, A. D. Markov, Y. Kuznetsov, I. N. Kravchenko, A. N. Belyakov, A. M. Makarov

引用次数: 0

Obtaining and investigation of a heat-resistant binder with the additive of metakaolin in the conditions of Uzbekistan 在乌兹别克斯坦的条件下获得并研究含有偏高岭土添加剂的耐热粘合剂

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-7-28-32

Aida Ruzmetova, Zabibulla Babaev, Mirzhalil Yunusov

引用次数: 0

The defects of structural and phase transformations in polycrystalline cerium dioxide under heating in vacuum and in air 多晶二氧化铈在真空和空气中加热时的结构和相变缺陷

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-7-42-51

A. E. Solovyeva

{"title":"The defects of structural and phase transformations in polycrystalline cerium dioxide under heating in vacuum and in air","authors":"A. E. Solovyeva","doi":"10.17073/1683-4518-2023-7-42-51","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-7-42-51","url":null,"abstract":"Structural changes in cerium dioxide, when heated in vacuum in the range of 25‒1600 °C, in air in the range of 25‒1500 °C, and during successive annealing in the range of 1600‒2100 °C in air, followed by quenching in water, were studied. In the crystal lattice of CeO2‒х, the F → F1 phase transformation in vacuum proceeds in the range of 1100‒1600 °C; additionally, at 1200 °C, X-ray lines of the C-type Ce2O3 phase appear. The thermal expansion coefficient of phases of the fluorite type F and F1 in the range of 25‒1500 °C in air, as well as phases of the fluorite type F, F1 and type C Ce2O3 in the range of 25‒1600 °C are determined in vacuum and their dependence on the change in the oxygen content in the CeO2‒х crystal lattice was found. The kinetic conditions for reduction of cerium dioxide in vacuum and oxidation in air are different. The cubic structure of the fluorite type F CeO2‒х, when the samples are heated in air, is preserved up to 1800 °C with the content of anionic vacancies, at 1900 °C the transformation F → F1 occurs. The formation of loops, edge and screw dislocations in the structure of cerium dioxide grains after annealing of samples in the range of 1900‒2100 °C in air were discovered for the first time. The decomposition of the structure F1 into cerium oxide phases of types F and C proceeds at 2100 °C along the height and boundaries of screw dislocations. It was found that fragments of the C-type phase of cerium oxide are located on loops along the height of screw dislocations, which indicates the movement and evaporation of these fragments. When the samples are oxidized at 1600 °C in air, the black-colored C Ce2O3‒х phase in a gradient of different concentrations moves along certain trajectories to opposite ones. grain boundaries, abuts against dislocation loops, bends them, and oxidizes to phases F1 and F. In the structure of polycrystalline cerium dioxide, when heated in vacuum and in air, certain concentrations of defects control phase transformations.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"100 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204475","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

Electrodynamic properties of (BeO + TiO2)- ceramics in the centimeter wavelength range BeO + TiO2）- 陶瓷在厘米波长范围内的电动特性

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-10-45-52

A. I. Malkin, N. A. Drokin, V, S. Kiiko, A. N. Korotkov, V. A. Chchetkin

引用次数: 0

Ceramic composites based on zircon and zirconium dioxide 基于锆石和二氧化锆的陶瓷复合材料

NOVYE OGNEUPORY (NEW REFRACTORIES) Pub Date : 2023-11-30 DOI: 10.17073/1683-4518-2023-9-28-33

V. L. Ugolkov, N. A. Koval’chuk, A. Osipov, L. Mezentseva, A. Akatov

引用次数: 0