Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-8-48-53
A. Konstantinov, A. Chizhikov, M. Antipov, P. Bazhin, N. Y. Khomenko
{"title":"Study of the effect of high-temperature annealing on the structure and properties of a composite material based on TiC/TiB2/Ti3SiC2","authors":"A. Konstantinov, A. Chizhikov, M. Antipov, P. Bazhin, N. Y. Khomenko","doi":"10.17073/1683-4518-2023-8-48-53","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-8-48-53","url":null,"abstract":"","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"55 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139196925","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-6-44-51
V. Abdrakhimov, E. Abdrakhimova
Acid-resistant material is obtained on the basis of metallurgy wastes ― clay part of «tails» of gravity of zircon-ilmenite ores, used as clay binder and ferrochromic aluminothermic slag, used as a repellent without using natural traditional materials. It has been found that the introduction of ferrochromic aluminothermic slag into the ceramic compositions contributes to the formation of highly refractory minerals (corundum, magnesia spinel, chromium oxide, bonite and mayenite), which increase chemical, physical and mechanical indices at a firing temperature of 1300 °C acid stops.
耐酸材料是在冶金废料--锆钛铁矿重力 "尾矿 "中的粘土部分（用作粘土粘合剂）和铁铬铝熔渣（用作驱避剂）--的基础上获得的，无需使用天然传统材料。研究发现，在陶瓷成分中加入铁铬铝熔渣有助于形成高耐火性矿物（刚玉、镁尖晶石、氧化铬、锰铝铁矿和马来铁矿），在 1300 °C 的烧制温度下，这些矿物会增加化学、物理和机械指数。
{"title":"Acid-resistant material was obtained on the basis of metallurgy waste without the use of traditional natural materials","authors":"V. Abdrakhimov, E. Abdrakhimova","doi":"10.17073/1683-4518-2023-6-44-51","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-6-44-51","url":null,"abstract":"Acid-resistant material is obtained on the basis of metallurgy wastes ― clay part of «tails» of gravity of zircon-ilmenite ores, used as clay binder and ferrochromic aluminothermic slag, used as a repellent without using natural traditional materials. It has been found that the introduction of ferrochromic aluminothermic slag into the ceramic compositions contributes to the formation of highly refractory minerals (corundum, magnesia spinel, chromium oxide, bonite and mayenite), which increase chemical, physical and mechanical indices at a firing temperature of 1300 °C acid stops.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139197584","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-6-67-71
A. K. Logacheva, O. Averkova, A. Ziganshin, K. Logachev, E. Popov
The features of the construction of a computational algorithm for calculating circular suction sockets in the conditions of an incoming flow by the method of discrete vortex rings are considered. Flow patterns are given at different ratios of the incoming and intake air flow velocities. The dependences of the characteristic sizes of vortex zones arising at the inlet to the suction-sockets on the velocity of the incoming flow, the length and angle of inclination of the socket are determined. Expressions are obtained for the critical velocity of the incoming flow, at which the flow separation mode for the first vortex zone changes from separation inside the bell to separation outside it. The obtained results can be useful for the construction of local suction systems, profiled according to the found outlines of vortex zones.
{"title":"Determination of the influence of the incoming flow on the vortex zones at the entrance to the suction sockets. Part 1. The Axisymmetric problem","authors":"A. K. Logacheva, O. Averkova, A. Ziganshin, K. Logachev, E. Popov","doi":"10.17073/1683-4518-2023-6-67-71","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-6-67-71","url":null,"abstract":"The features of the construction of a computational algorithm for calculating circular suction sockets in the conditions of an incoming flow by the method of discrete vortex rings are considered. Flow patterns are given at different ratios of the incoming and intake air flow velocities. The dependences of the characteristic sizes of vortex zones arising at the inlet to the suction-sockets on the velocity of the incoming flow, the length and angle of inclination of the socket are determined. Expressions are obtained for the critical velocity of the incoming flow, at which the flow separation mode for the first vortex zone changes from separation inside the bell to separation outside it. The obtained results can be useful for the construction of local suction systems, profiled according to the found outlines of vortex zones.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139202311","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-8-38-43
A. O. Migashkin
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.
{"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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-8-21-27
A. M. Sycheva
The article considers a method for activating cement hardening processes using nanomaterials due to the magnitude of their surface energy: when injected into concrete, nanoparticles dump it due to the desire to transition to a stable state. Such activity leads to a significant gain in strength, hardness and the production of high-strength concrete. It is shown that such an effect can be achieved by surface impregnation of concrete with sols (colloidal solutions) based on SiO2 nanoparticles. It is advisable to start impregnation from the third day of hardening under normal conditions. At this age, the main heat of the cement's own exothermic hardening reaction has already been released into the environment, and the introduction of additional energy will not cause a shift in equilibrium towards slowing down the hardening processes in accordance with the Le-Chatelier principle. The results of physico-chemical studies of concrete after hardening, explaining this effect, are presented.
{"title":"Using the surface energy of nanoparticles to produce high-strength concrete","authors":"A. M. Sycheva","doi":"10.17073/1683-4518-2023-8-21-27","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-8-21-27","url":null,"abstract":"The article considers a method for activating cement hardening processes using nanomaterials due to the magnitude of their surface energy: when injected into concrete, nanoparticles dump it due to the desire to transition to a stable state. Such activity leads to a significant gain in strength, hardness and the production of high-strength concrete. It is shown that such an effect can be achieved by surface impregnation of concrete with sols (colloidal solutions) based on SiO2 nanoparticles. It is advisable to start impregnation from the third day of hardening under normal conditions. At this age, the main heat of the cement's own exothermic hardening reaction has already been released into the environment, and the introduction of additional energy will not cause a shift in equilibrium towards slowing down the hardening processes in accordance with the Le-Chatelier principle. The results of physico-chemical studies of concrete after hardening, explaining this effect, are presented.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139205118","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-10-31-39
A. Bykova, A. D. Markov, Y. Kuznetsov, I. N. Kravchenko, A. N. Belyakov, A. M. Makarov
.
.
{"title":"Effect of electrolyte composition on the structure and tribological properties of ceramic coatings obtained by microarc oxidation","authors":"A. Bykova, A. D. Markov, Y. Kuznetsov, I. N. Kravchenko, A. N. Belyakov, A. M. Makarov","doi":"10.17073/1683-4518-2023-10-31-39","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-10-31-39","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139208286","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-6-34-38
M. Antipov, P. Bazhin, A. Chizhikov, A. Konstantinov
In this work, high-temperature annealing in an oxidizing atmosphere at temperatures of 800, 900, 950 and 1000 oC for 10 hours of cermet materials based on titanium carbide and nichrome was carried out, using the SHS-extrusion method. On the basis of experimental data, dependences of weight gain on temperature and annealing time were plotted. On the basis of X-ray phase analysis and the results of scanning electron microscopy, it was found that the carbide phases do not change stoichiometry, a new CrNi3 phase is detected, and oxide films (TiO2 and Cr2O) are formed on the surface of the body. It has been established that with an increase in the annealing temperature, TiC carbide grains grow from 2,79 to 3,4 µm.
{"title":"High-temperature annealing of ceramic materials based Ti-C-NiCr","authors":"M. Antipov, P. Bazhin, A. Chizhikov, A. Konstantinov","doi":"10.17073/1683-4518-2023-6-34-38","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-6-34-38","url":null,"abstract":"In this work, high-temperature annealing in an oxidizing atmosphere at temperatures of 800, 900, 950 and 1000 oC for 10 hours of cermet materials based on titanium carbide and nichrome was carried out, using the SHS-extrusion method. On the basis of experimental data, dependences of weight gain on temperature and annealing time were plotted. On the basis of X-ray phase analysis and the results of scanning electron microscopy, it was found that the carbide phases do not change stoichiometry, a new CrNi3 phase is detected, and oxide films (TiO2 and Cr2O) are formed on the surface of the body. It has been established that with an increase in the annealing temperature, TiC carbide grains grow from 2,79 to 3,4 µm.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139198617","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-8-44-47
V. A. Abyzov, I. E. Leshchenko
The results of the development of low-cement refractory concrete (LCC) based on a filler made of kaolin chamotte with a maximum application temperature of 1500 o C are presented. It is shown that in order to obtain high rates of workability, narrow fractions of filler with reduced water demand should be used. A comparative analysis of the effectiveness of superplasticizer additives has been carried out, their effect on the properties of kaolin chamotte-based LCC has been evaluated. It is established that the use of kaolin chamotte provides high strength of refractory concrete (more than 50 MPa after drying and first heating to operating temperatures).
{"title":"Low-cement refractory concrete based on kaolin chamotte aggregate with improved workability","authors":"V. A. Abyzov, I. E. Leshchenko","doi":"10.17073/1683-4518-2023-8-44-47","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-8-44-47","url":null,"abstract":"The results of the development of low-cement refractory concrete (LCC) based on a filler made of kaolin chamotte with a maximum application temperature of 1500 o C are presented. It is shown that in order to obtain high rates of workability, narrow fractions of filler with reduced water demand should be used. A comparative analysis of the effectiveness of superplasticizer additives has been carried out, their effect on the properties of kaolin chamotte-based LCC has been evaluated. It is established that the use of kaolin chamotte provides high strength of refractory concrete (more than 50 MPa after drying and first heating to operating temperatures).","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199002","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-10-45-52
A. I. Malkin, N. A. Drokin, V, S. Kiiko, A. N. Korotkov, V. A. Chchetkin
.
.
{"title":"Electrodynamic properties of (BeO + TiO2)- ceramics in the centimeter wavelength range","authors":"A. I. Malkin, N. A. Drokin, V, S. Kiiko, A. N. Korotkov, V. A. Chchetkin","doi":"10.17073/1683-4518-2023-10-45-52","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-10-45-52","url":null,"abstract":"<jats:p>.</jats:p>","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"120 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139200702","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}
Pub Date : 2023-11-30DOI: 10.17073/1683-4518-2023-9-28-33
V. L. Ugolkov, N. A. Koval’chuk, A. Osipov, L. Mezentseva, A. Akatov
Ceramic composites (1 ‒ x)ZrSiO4‒xZrO2 with low thermal conductivity were obtained by sintering nanosized powders in the range of 1000‒1300 °C in air. The fracture surface of ceramic samples after sintering at 1300 °C was investigated and their thermal behavior was studied by dilatometry. The chemical resistance of composites by leaching in distilled water was evaluated. In the future, such ceramic composites can be used as matrices for the purpose of long-term, environmentally safe storage and subsequent final isolation from the environment of individual isotopes of actinide-rare earth fraction of high-level waste (HLW).
{"title":"Ceramic composites based on zircon and zirconium dioxide","authors":"V. L. Ugolkov, N. A. Koval’chuk, A. Osipov, L. Mezentseva, A. Akatov","doi":"10.17073/1683-4518-2023-9-28-33","DOIUrl":"https://doi.org/10.17073/1683-4518-2023-9-28-33","url":null,"abstract":"Ceramic composites (1 ‒ x)ZrSiO4‒xZrO2 with low thermal conductivity were obtained by sintering nanosized powders in the range of 1000‒1300 °C in air. The fracture surface of ceramic samples after sintering at 1300 °C was investigated and their thermal behavior was studied by dilatometry. The chemical resistance of composites by leaching in distilled water was evaluated. In the future, such ceramic composites can be used as matrices for the purpose of long-term, environmentally safe storage and subsequent final isolation from the environment of individual isotopes of actinide-rare earth fraction of high-level waste (HLW).","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201899","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}
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