Pub Date : 2023-09-01DOI: 10.14489/glc.2023.09.pp.060-062
S. Ghazaee, E. Moslehifard, T. Ghaffari, F. O. Nasirpouri
The effect of immersion in a coffee drink solution on the color stability of two CAD/CAM ceramic restorations was investigated in this in vitro study. To this end, zirconia-reinforced lithium silicate (ZLS) and lithium disilicate (LDS) glass-ceramic blocks were surface-treated using mechanical polishing and glazing techniques. In addition, their color was examined before and after immersion in a coffee solution using a spectrophotometer, and the color changes were evaluated. A two-way analysis of variance (ANOVA) was used to examine the color changes. The material type significantly influenced color changes (P < 0.001). After glazing and mechanical polishing, LDS exhibited considerably less color change in both groups than ZLS. In both types of ceramics, the glazed group experienced less color variation than the mechanically polished group. Color changes were clinically acceptable across all groups. The glazing surface treatment produced superior color stability than the mechanical polishing technique. LDS exhibited more color stability than ZLS in both surface treatments.
{"title":"EFFECT OF SURFACE GLAZE TREATMENT AND MECHANICAL POLISHING ON THE COLOR STABILITY OF TWO TYPES OF CAD/CAM CERAMICS","authors":"S. Ghazaee, E. Moslehifard, T. Ghaffari, F. O. Nasirpouri","doi":"10.14489/glc.2023.09.pp.060-062","DOIUrl":"https://doi.org/10.14489/glc.2023.09.pp.060-062","url":null,"abstract":"The effect of immersion in a coffee drink solution on the color stability of two CAD/CAM ceramic restorations was investigated in this in vitro study. To this end, zirconia-reinforced lithium silicate (ZLS) and lithium disilicate (LDS) glass-ceramic blocks were surface-treated using mechanical polishing and glazing techniques. In addition, their color was examined before and after immersion in a coffee solution using a spectrophotometer, and the color changes were evaluated. A two-way analysis of variance (ANOVA) was used to examine the color changes. The material type significantly influenced color changes (P < 0.001). After glazing and mechanical polishing, LDS exhibited considerably less color change in both groups than ZLS. In both types of ceramics, the glazed group experienced less color variation than the mechanically polished group. Color changes were clinically acceptable across all groups. The glazing surface treatment produced superior color stability than the mechanical polishing technique. LDS exhibited more color stability than ZLS in both surface treatments.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"100 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139346614","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.056-061
Z. Kadyrova, I. K. Shokosimov, M. Kazakova
The results of studies of the chemical and mineralogical compositions and the main characteristics for determining the suitability of trachybasaltic porphyrite from the Gavasay deposit of Uzbekistan for obtaining heat-insulating material, in particular mineral fiber, are presented. It has been established that this new deposit of igneous rock can be used as the main raw material component for the production of basalt fiber products, a widely demanded and modern material in the construction industry.
{"title":"DETERMINATION OF THE CHEMICAL AND MINERALOGICAL COMPOSITION OF TRACHIBASALTIC PORPHIRITE FROM THE GAVASAY FOR OBTAINING MINERAL FIBER","authors":"Z. Kadyrova, I. K. Shokosimov, M. Kazakova","doi":"10.14489/glc.2023.08.pp.056-061","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.056-061","url":null,"abstract":"The results of studies of the chemical and mineralogical compositions and the main characteristics for determining the suitability of trachybasaltic porphyrite from the Gavasay deposit of Uzbekistan for obtaining heat-insulating material, in particular mineral fiber, are presented. It has been established that this new deposit of igneous rock can be used as the main raw material component for the production of basalt fiber products, a widely demanded and modern material in the construction industry.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"1122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352956","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.039-047
M. Yaprintsev, O. N. Ivanov
The purpose of this work was to prepare and identify the features of the microstructure and the degree of texturing of the thermoelectric material Bi2Te2.7Se0.3 doped with dysprosium. Textured Bi2-xDyxTe2.7Se0.3 compounds with x = 0.0000; 0.0010; 0.0025; 0.0050; 0.0100 and 0.0200 were prepared by using solvothermal synthesis and spark plasma sintering of starting powders. Dy-doping results in several interconnected effects. First of them is reducing in size of particles in starting powders with increasing x. This effect is attributed to increasing in ionic bonding fraction in polar covalent Bi(Dy)–Te bonds with increasing Dy content due to difference in electronegativity of Bi and Dy. With increasing x, grain size in bulk samples is also reducing, which is governed by relevant changing in the size of particles in the starting powders with different dopant content. This effect also results in enhancing in texturing degree in samples.
这项工作的目的是制备和确定掺杂镝的热电材料 Bi2Te2.7Se0.3 的微观结构特征和纹理程度。通过溶热合成和火花等离子烧结起始粉末，制备了 x = 0.0000; 0.0010; 0.0025; 0.0050; 0.0100 和 0.0200 的纹理 Bi2-xDyxTe2.7Se0.3 化合物。掺杂镝会产生几种相互关联的效应。由于 Bi 和 Dy 的电负性不同，随着 Dy 含量的增加，极性共价 Bi(Dy)-Te 键中的离子键比例也会增加。随着 x 值的增加，块状样品中的晶粒尺寸也在减小，这是由于不同掺杂剂含量的起始粉末中的颗粒尺寸发生了相关变化。这种效应还导致样品的纹理度增加。
{"title":"EFFECT OF DYSPROSIUM DOPING ON MICROSTRUCTURE AND DEGREE OF TEXTURING OF BISMUTH TELLURIDE-BASED THERMOELECTRIC MATERIALS","authors":"M. Yaprintsev, O. N. Ivanov","doi":"10.14489/glc.2023.08.pp.039-047","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.039-047","url":null,"abstract":"The purpose of this work was to prepare and identify the features of the microstructure and the degree of texturing of the thermoelectric material Bi2Te2.7Se0.3 doped with dysprosium. Textured Bi2-xDyxTe2.7Se0.3 compounds with x = 0.0000; 0.0010; 0.0025; 0.0050; 0.0100 and 0.0200 were prepared by using solvothermal synthesis and spark plasma sintering of starting powders. Dy-doping results in several interconnected effects. First of them is reducing in size of particles in starting powders with increasing x. This effect is attributed to increasing in ionic bonding fraction in polar covalent Bi(Dy)–Te bonds with increasing Dy content due to difference in electronegativity of Bi and Dy. With increasing x, grain size in bulk samples is also reducing, which is governed by relevant changing in the size of particles in the starting powders with different dopant content. This effect also results in enhancing in texturing degree in samples.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352914","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.048-055
Sh. M. Shamuratova, D. I. Alimdjanova, Z. T. Matkarimov
The paper presents the results of the research on the production of electrical porcelain on the basis of available traditional raw materials of Uzbekistan. It is shown that in conditions of a shortage of high-grade mineral raw materials for the production of electrical porcelain, it is advisable to add about half of the kaolin in the pre-fired state to the batch. At the same time, the products of firing at 1350 ?С of primary and secondary Angren kaolins allow us to consider them as a mullite-containing component, which further provides high physical, mechanical and dielectric properties of the porcelain material. The phase composition of the obtained porcelain is mainly represented by new crystalline components such as mullite and cristobalite, which gives the right to relate it to the mullite type of electro porcelain.
{"title":"ELECTROTECHNICAL PORCELAIN BASED ON RAW MATERIALS OF UZBEKISTAN","authors":"Sh. M. Shamuratova, D. I. Alimdjanova, Z. T. Matkarimov","doi":"10.14489/glc.2023.08.pp.048-055","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.048-055","url":null,"abstract":"The paper presents the results of the research on the production of electrical porcelain on the basis of available traditional raw materials of Uzbekistan. It is shown that in conditions of a shortage of high-grade mineral raw materials for the production of electrical porcelain, it is advisable to add about half of the kaolin in the pre-fired state to the batch. At the same time, the products of firing at 1350 ?С of primary and secondary Angren kaolins allow us to consider them as a mullite-containing component, which further provides high physical, mechanical and dielectric properties of the porcelain material. The phase composition of the obtained porcelain is mainly represented by new crystalline components such as mullite and cristobalite, which gives the right to relate it to the mullite type of electro porcelain.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139353010","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.003-011
A. S. Naumov, R. O. Alekseev, V. I. Savinkov, V. Sigaev
By the Marotta et al method, temperature of 670 ?C at a holding time of 2 hours provides the maximum rate of nucleation the crystalline phase of ?-eucryptite-like solid solutions was found. The activation energy of nucleation and the Avrami parameter were measured by the DSC method, allowing to estimate the crystallization characteristics. The gradient crystallization method has established the temperature range of heat treatment, within which it is possible to obtain a transparent glass-ceramic. The refinement of regime the nucleation stage made it possible to reduce the time of the second stage crystallization required for the complete formation of the transparent glass-ceramic structure. Varying the holding time at a temperature of 710 ?C makes it possible to smoothly change the CTE in the range of ?(3…+41)?10–7 K?1 in the temperature range from ?120 to +500 ?C.
{"title":"NUCLEATION AND CRYSTALS GROWTH IN THE VOLUME OF GLASS Li2O–Al2O3–SiO2 SYSTEM","authors":"A. S. Naumov, R. O. Alekseev, V. I. Savinkov, V. Sigaev","doi":"10.14489/glc.2023.08.pp.003-011","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.003-011","url":null,"abstract":"By the Marotta et al method, temperature of 670 ?C at a holding time of 2 hours provides the maximum rate of nucleation the crystalline phase of ?-eucryptite-like solid solutions was found. The activation energy of nucleation and the Avrami parameter were measured by the DSC method, allowing to estimate the crystallization characteristics. The gradient crystallization method has established the temperature range of heat treatment, within which it is possible to obtain a transparent glass-ceramic. The refinement of regime the nucleation stage made it possible to reduce the time of the second stage crystallization required for the complete formation of the transparent glass-ceramic structure. Varying the holding time at a temperature of 710 ?C makes it possible to smoothly change the CTE in the range of ?(3…+41)?10–7 K?1 in the temperature range from ?120 to +500 ?C.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352454","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.012-017
E. R. Khorosheva, R. I. Makarov
The influence of the operating mode of the float bath on the adhesion of tin oxides to the lower surface of the produced glass ribbon was studied. Statistical analysis of the experimental data and modeling made it possible to quantify the influence of the glass ribbon formation mode and the chemical composition of the glass on the amount of tin oxide sticking.
{"title":"INFLUENCE OF TECHNOLOGICAL PARAMETERS OF THE FLOAT PROCESS ON THE ADHESION OF TIN OXIDES TO SHEET GLASS","authors":"E. R. Khorosheva, R. I. Makarov","doi":"10.14489/glc.2023.08.pp.012-017","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.012-017","url":null,"abstract":"The influence of the operating mode of the float bath on the adhesion of tin oxides to the lower surface of the produced glass ribbon was studied. Statistical analysis of the experimental data and modeling made it possible to quantify the influence of the glass ribbon formation mode and the chemical composition of the glass on the amount of tin oxide sticking.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352447","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.026-032
M. I. Komarov, N. A. Makarov
The calculation of Gibbs energy for reactions of interaction of ZrO2, Al2O3, SiO2, TiO2, CaO and MnO with carbon and carbon monoxide in temperature range 1273 – 2273 К (1000 – 2000 ?С) is made to select eutectic additive for structural ceramics in Al2O3–ZrO2–eutectic additive–carbon nanotube system. Considering the multi-component structure of the ceramic matrix composite in the system Al2O3–ZrO2–eutectic additive–carbon nanotube system, it is necessary to consider the process of possible carbidization, worsening the strength characteristics of the synthesized material. As a result of the analysis, it was found that eutectic additives containing Al2O3, SiO2, TiO2, CaO.
计算了ZrO2、Al2O3、SiO2、TiO2、CaO和MnO在1273 - 2273 К (1000 - 2000 С)温度范围内与碳和一氧化碳相互作用的吉布斯能，以选择Al2O3-ZrO2-共晶添加剂-碳纳米管体系中结构陶瓷的共晶添加剂。考虑到 Al2O3-ZrO2-共晶添加剂-碳纳米管体系中陶瓷基复合材料的多组分结构，有必要考虑可能出现的碳化过程，从而恶化合成材料的强度特性。分析结果表明，含有 Al2O3、SiO2、TiO2 和 CaO 的共晶添加剂在碳纳米管体系中会产生碳化现象。
{"title":"THERMODYNAMIC ANALYSIS OF OXIDE-CARBON AND CARBON MONOXIDE CHEMICAL REACTIONS IN ORDER TO SELECT ADDITIVES FOR CARBON NANOTUBE REINFORCED CORUNDUM CERAMICS","authors":"M. I. Komarov, N. A. Makarov","doi":"10.14489/glc.2023.08.pp.026-032","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.026-032","url":null,"abstract":"The calculation of Gibbs energy for reactions of interaction of ZrO2, Al2O3, SiO2, TiO2, CaO and MnO with carbon and carbon monoxide in temperature range 1273 – 2273 К (1000 – 2000 ?С) is made to select eutectic additive for structural ceramics in Al2O3–ZrO2–eutectic additive–carbon nanotube system. Considering the multi-component structure of the ceramic matrix composite in the system Al2O3–ZrO2–eutectic additive–carbon nanotube system, it is necessary to consider the process of possible carbidization, worsening the strength characteristics of the synthesized material. As a result of the analysis, it was found that eutectic additives containing Al2O3, SiO2, TiO2, CaO.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"2012 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352715","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.018-025
V. A. Kjutvitsky, I. A. Romanova, E. V. Mironova, V. V. Borisova, O. I. Ostanina, F. N. Karashevtsev
The synthesis of bismuth-borate glasses was carried out Composition (mass content, %): 70 Bi2O3, 2 GeO2, 25 B2O3, 3 MoO3; 70 Bi2O3, 17 GeO2, 10 B2O3, 3 MoO3 and bismuth glasses. Composition (mass content, %): 80 Bi2O3, 4 GeO2, 5 MoO3, 11 SiO2; 80 Bi2O3, 8 GeO2, 8,5 SiO2, 3,5 MoO3. Processes have been developed for forming a layer based on glass receptors using the method of ultrasonic spraying of interacting components and applying a water-insoluble polymer film obtained by a chemical reaction between a poly-N,N-dimethyl-3,4-dimethylenepyrrolidinium chloride polymer and a modifier potassium hexacyanoferrate (II). The sensors obtained on the basis of glasses make it possible to determine the content of hydrogen sulfide and water vapor in the air with an error of 2 – 4 %.
{"title":"APPLICATION OF BISMUTHATE GLASSES AS A SUBSTRATE FOR GAS SENSORS","authors":"V. A. Kjutvitsky, I. A. Romanova, E. V. Mironova, V. V. Borisova, O. I. Ostanina, F. N. Karashevtsev","doi":"10.14489/glc.2023.08.pp.018-025","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.018-025","url":null,"abstract":"The synthesis of bismuth-borate glasses was carried out Composition (mass content, %): 70 Bi2O3, 2 GeO2, 25 B2O3, 3 MoO3; 70 Bi2O3, 17 GeO2, 10 B2O3, 3 MoO3 and bismuth glasses. Composition (mass content, %): 80 Bi2O3, 4 GeO2, 5 MoO3, 11 SiO2; 80 Bi2O3, 8 GeO2, 8,5 SiO2, 3,5 MoO3. Processes have been developed for forming a layer based on glass receptors using the method of ultrasonic spraying of interacting components and applying a water-insoluble polymer film obtained by a chemical reaction between a poly-N,N-dimethyl-3,4-dimethylenepyrrolidinium chloride polymer and a modifier potassium hexacyanoferrate (II). The sensors obtained on the basis of glasses make it possible to determine the content of hydrogen sulfide and water vapor in the air with an error of 2 – 4 %.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352238","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 : 2023-08-01DOI: 10.14489/glc.2023.08.pp.033-038
E. Novokreshchennykh, N. Uglev
For the manufacture of metal parts of complex shape, the most promising method is casting according to smelted or burnt models. As a smelted material, a complex composition of wax with other organic compounds is used, characterized by high constancy of physico-chemical and mechanical properties, since the accuracy of multiple reproduction of critical parts, for example, the blades of a turbojet engine, depends on it. The wax model is necessary for growing a ceramic shell around it, the accuracy of which is crucial for obtaining a high-quality casting. Since the surface of the wax model is hydrophobic, and the ceramic suspension applied to the model is created on a water basis, a critical factor in the shell manufacturing technology is the ideal wettability of the model surface by the suspension applied to it. Improvement of wettability can be achieved not only by introducing special surfactants into the aqueous phase, but also by changing the properties of the wax surface itself, i.e. giving it the properties of hydrophilicity. The paper presents a method of physical modification of the wax model surface, which consists in applying a thin layer of ceramic powder on it, which is well wetted with aqueous ceramic suspensions.
{"title":"INCREASING THE HYDROPHILICITY OF THE SURFACE OF CASTING MODELS WHEN APPLYING A PRIMER LAYER OF CERAMICS WITH A DEVELOPED SURFACE","authors":"E. Novokreshchennykh, N. Uglev","doi":"10.14489/glc.2023.08.pp.033-038","DOIUrl":"https://doi.org/10.14489/glc.2023.08.pp.033-038","url":null,"abstract":"For the manufacture of metal parts of complex shape, the most promising method is casting according to smelted or burnt models. As a smelted material, a complex composition of wax with other organic compounds is used, characterized by high constancy of physico-chemical and mechanical properties, since the accuracy of multiple reproduction of critical parts, for example, the blades of a turbojet engine, depends on it. The wax model is necessary for growing a ceramic shell around it, the accuracy of which is crucial for obtaining a high-quality casting. Since the surface of the wax model is hydrophobic, and the ceramic suspension applied to the model is created on a water basis, a critical factor in the shell manufacturing technology is the ideal wettability of the model surface by the suspension applied to it. Improvement of wettability can be achieved not only by introducing special surfactants into the aqueous phase, but also by changing the properties of the wax surface itself, i.e. giving it the properties of hydrophilicity. The paper presents a method of physical modification of the wax model surface, which consists in applying a thin layer of ceramic powder on it, which is well wetted with aqueous ceramic suspensions.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139352411","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 : 2023-07-01DOI: 10.14489/glc.2023.07.pp.003-008
S. D. Gostev, I. Y. Gotz, T. G. Nasad
The paper considers the issue of the possible use of stainless steel grade 20Cr23Ni18 and its foreign analogue AISI 310S, instead of steel 12Cr18Ni10T, as a material for the manufacture of a shaping die in the production of glass insulators from electrovacuum glass grade G93-3M, widely used in the radio-electronic industry as cases for magnetic contacts. It is shown that at working temperatures there is a chemical interaction between both steels and glass of grade G93-3M, which leads to a deterioration in the quality of products due to the appearance of a large number of gas bubbles in it. It has also been shown that due to additional heat treatment it is possible to reduce the consequences of this chemical interaction, thereby increasing the quality of the resulting product.
{"title":"INVESTIGATION OF THE CHEMICAL INTERACTION OF HEAT-RESISTANT STEELS WITH ELECTROVACUUM GLASS G93-3M","authors":"S. D. Gostev, I. Y. Gotz, T. G. Nasad","doi":"10.14489/glc.2023.07.pp.003-008","DOIUrl":"https://doi.org/10.14489/glc.2023.07.pp.003-008","url":null,"abstract":"The paper considers the issue of the possible use of stainless steel grade 20Cr23Ni18 and its foreign analogue AISI 310S, instead of steel 12Cr18Ni10T, as a material for the manufacture of a shaping die in the production of glass insulators from electrovacuum glass grade G93-3M, widely used in the radio-electronic industry as cases for magnetic contacts. It is shown that at working temperatures there is a chemical interaction between both steels and glass of grade G93-3M, which leads to a deterioration in the quality of products due to the appearance of a large number of gas bubbles in it. It has also been shown that due to additional heat treatment it is possible to reduce the consequences of this chemical interaction, thereby increasing the quality of the resulting product.","PeriodicalId":445802,"journal":{"name":"Steklo i Keramika","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139365284","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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