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Refractories and Industrial Ceramics最新文献

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Sintering of c-BC2N, Solid Solutions of Metallic Phases Particles with the Additives of Oxide Components and NiCr at Ultra-High Load and Temperature of Spark-Plasma Sintering, High Compaction Pressure During the Explosive Method 在火花等离子烧结的超高负载和超高温度下烧结 c-BC2N、添加氧化物成分和镍铬的金属相颗粒固溶体，爆炸法中的高压实压力
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-31 DOI: 10.1007/s11148-024-00908-3
A. V. Hmelov
{"title":"Sintering of c-BC2N, Solid Solutions of Metallic Phases Particles with the Additives of Oxide Components and NiCr at Ultra-High Load and Temperature of Spark-Plasma Sintering, High Compaction Pressure During the Explosive Method","authors":"A. V. Hmelov","doi":"10.1007/s11148-024-00908-3","DOIUrl":"10.1007/s11148-024-00908-3","url":null,"abstract":"<p>The article shows the effect of an ultra-high pressing load of 1,20 GPa at 1800°C during spark plasma sintering, compaction pressure of 2,30 GPa at 1260°C during the explosive sintering of the particles of solid solutions of ceramic and metallic phases with the additive of oxide powders mixture, NiCr on the phase composition, microstructure, grain size of the crystalline phases, relative density, linear shrinkage, microstructural features of the boundary layers, microcrack paths, physico-mechanical properties of mullite–<i>c</i>-ZrO<sub>2</sub>–<i>c</i>-BC<sub>2</sub>N–NiCr–V–Mo–Zr–W and mullite–<i>c</i>-ZrO<sub>2</sub>–<i>c</i>-BC<sub>2</sub>N–NiCr–Cr–Mo–Nb–Ta. Spark-plasma sintered <i>c</i>-ZrO<sub>2</sub> at pressing load 35 MPa and temperature 1400°C, <i>g</i>-BC<sub>2</sub>N at pressing load 60 MPa and temperature 1600°C show evoluted crystallization of the <i>c</i>-ZrO<sub>2</sub> and <i>g</i>-BC<sub>2</sub>N phases, respectively, crystalline, uniform, dense microstructures. Samples sintered by the spark-plasma method at an ultra-high pressing load of 1,20 GPa at 1800°C show evoluted mullitization, crystallization of <i>c</i>-ZrO<sub>2</sub>, <i>c</i>-BC<sub>2</sub>N, NiCr, β-V, Mo, W, Zr, β-Cr, Mo, Nb, Ta phases, more crystalline, more uniform and more densely sintered microstructures, variously dispersed grains of the crystalline phases. Samples sintered by both methods differ by the relative density, linear shrinkage, density, uniformity, width, path and moving microcracks across these boundary layers, crack resistance and values of physico-mechanical properties.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"657 - 681"},"PeriodicalIF":0.4,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes of Structural Properties in Polycrystalline Y2O3 during Heating in Air and Vacuum 多晶 Y2O3 在空气和真空中加热时的结构特性变化
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-23 DOI: 10.1007/s11148-024-00899-1
A. E. Solovyeva
{"title":"Changes of Structural Properties in Polycrystalline Y2O3 during Heating in Air and Vacuum","authors":"A. E. Solovyeva","doi":"10.1007/s11148-024-00899-1","DOIUrl":"10.1007/s11148-024-00899-1","url":null,"abstract":"<p>Polymorphic transformations of the first and second kind of the type C ordered cubic structure into the type C<sup>1</sup> disordered structure were found during heating of samples of Y<sub>2</sub>O<sub>3</sub> oxide grade (99.990%) for phosphors in the range 500 – 1100°C in air and vacuum. The phase transformations proceeded without changing the chemical composition of oxygen in yttrium oxide. The mechanism of these transformations was determined. The chemical composition of oxygen in cubic C<sup>1</sup> Y<sub>2</sub>O<sub>3</sub> was stable up to 1750°C in air and up to 1500°C in vacuum. The change in the chemical composition of Y<sub>2</sub>O<sub>3–<i>x</i></sub> with respect to the oxygen content in the C<sup>1</sup> type cubic phase was studied. This structure was stable up to 2200°C in air and up to 1800°C in vacuum. The disordered type C<sup>1</sup> phase decomposed at these temperatures into the ordered type C<sub><i>x</i></sub> phase and a monoclinic type B phase. It was theoretically substantiated and experimentally confirmed for the first time that when samples were heated in the range 2100 – 2200°C in vacuum and the oxygen stoichiometry deviated to the composition YO<sub>1.37</sub>, the type C<sub><i>x</i></sub> cubic phase decomposed into two cubic phases: type F with anionic vacancies and lattice parameter <i>a</i> = 0.5265 nm (space group <i>Fm</i>3<i>m</i>) and type C<sup>11</sup> cubic phase with color centers and lattice parameter <i>a</i> = 1.0652 nm (space of group <i>Ia</i>3). The refractive indices of these phases were determined. The type F and C<sup>11</sup> phases were stable when heated in air to 1300°C. The yttrium oxide samples were oxidized in air in the range 1300 – 1400°C to the composition Y<sub>2</sub>O<sub>3</sub>. The energy of oxygen migration into the yttrium oxide lattice was determined. The diffusion rate of oxygen during oxidation was calculated. The diffusion rate was found to depend on the temperature of oxidation and holding.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"604 - 613"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Composite Sorbent with Honeycomb Structure for Capturing Platinum Catalyst Aerosols 用于捕获铂催化剂气溶胶的蜂窝结构复合吸附剂
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-23 DOI: 10.1007/s11148-024-00901-w
V. I. Vanchurin, A. V. Belyakov, A. Yu. Petrov
{"title":"Composite Sorbent with Honeycomb Structure for Capturing Platinum Catalyst Aerosols","authors":"V. I. Vanchurin,&nbsp;A. V. Belyakov,&nbsp;A. Yu. Petrov","doi":"10.1007/s11148-024-00901-w","DOIUrl":"10.1007/s11148-024-00901-w","url":null,"abstract":"<p>A method for producing a composite sorbent with a honeycomb structure (a system of parallel directed permeable pores) for capturing platinum aerosols in high-temperature catalytic processes is proposed. The composite sorbent is prepared from cordierite ceramics with the addition of active calcium oxide. The calcium oxide precursor is introduced into the molding mass as calcium carbonate powder or by impregnating the matrix material with a solution of calcium nitrate. The mechanism of synthesis of the composite sorbent is investigated. Its physicochemical properties are given. Pilot tests of composite sorbents in an industrial reactor have shown its resistance to technological conditions of ammonia conversion and the ability to capture platinum catalyst aerosols.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"621 - 626"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 Titanium Oxide Additives on the Strength of Corundum Molds 氧化钛添加剂对刚玉模具强度的影响
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-22 DOI: 10.1007/s11148-024-00907-4
A. A. Pilipenko, M. S. Varfolomeev, G. I. Deynega
{"title":"Effect of Titanium Oxide Additives on the Strength of Corundum Molds","authors":"A. A. Pilipenko,&nbsp;M. S. Varfolomeev,&nbsp;G. I. Deynega","doi":"10.1007/s11148-024-00907-4","DOIUrl":"10.1007/s11148-024-00907-4","url":null,"abstract":"<p>The paper discusses a method for obtaining a ceramic material composition for further use in investment casting. Prototypes of Al<sub>2</sub>O<sub>3</sub> ceramics based on electrocorundum and silica-free binders were produced. The quality of the front layer was assessed. The manufactured samples were tested. It was revealed that the mechanical properties of the obtained ceramic materials did not meet the required ones, which led to measures aimed at improving the mechanical characteristics of the ceramics, in particular, the use of sintering additives.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"653 - 656"},"PeriodicalIF":0.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlation of Gravitational Separation Parameters 引力分离参数的相关性
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-22 DOI: 10.1007/s11148-024-00902-9
E. Barsky
{"title":"Correlation of Gravitational Separation Parameters","authors":"E. Barsky","doi":"10.1007/s11148-024-00902-9","DOIUrl":"10.1007/s11148-024-00902-9","url":null,"abstract":"<p>The entropy parameter is key when analyzing the properties of mass systems. This concept was first formulated in thermodynamics and then extended to many areas of knowledge. The concept of entropy for two-phase flows in separation modes was also reasonably formulated. Analysis of the connection between this entropy and other parameters characterizing the critical two-phase flow allowed us to determine a statistical identity for this process, which constitutes a balance between the potential and kinetic energy of various parameters characterizing the two-phase flow. This relationship connects all the main separation parameters determined from the consideration of the mass process, including also entropy. On this basis, it was possible to develop an in-depth theory of the process and create an adequate experimental methodology for calculating separation results and methods for optimizing it.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"627 - 631"},"PeriodicalIF":0.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hollow Nanostructured Ni3Fe Microspheres Obtained by Spray Pyrolysis 通过喷雾热解获得中空纳米结构的 Ni3Fe 微球
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-22 DOI: 10.1007/s11148-024-00906-5
B. B. Khaidarov, A. G. Yudin, D. S. Suvorov, D. V. Kuznetsov, D. V. Lysov, I. N. Burmistrov, D. Yu. Karpenkov
{"title":"Hollow Nanostructured Ni3Fe Microspheres Obtained by Spray Pyrolysis","authors":"B. B. Khaidarov,&nbsp;A. G. Yudin,&nbsp;D. S. Suvorov,&nbsp;D. V. Kuznetsov,&nbsp;D. V. Lysov,&nbsp;I. N. Burmistrov,&nbsp;D. Yu. Karpenkov","doi":"10.1007/s11148-024-00906-5","DOIUrl":"10.1007/s11148-024-00906-5","url":null,"abstract":"<p>A study of a two-stage method for the formation of nanostructured Ni<sub>3</sub>Fe is presented. Nanostructured Ni<sub>3</sub>Fe hollow microspheres were synthesized by ultrasonic spray pyrolysis (URP) from a mixture of aqueous solutions (10 wt.%) of nickel(II) and iron(III) nitrates. In the first stage, hollow microspheres with diameters in the range 0.5 – 10 μm were formed from a mixture of Ni and Fe oxides. The second stage involved metallization of a mixture of Ni and Fe oxides in a tube furnace in a hydrogen atmosphere. X-ray diffraction (XRD) data of the final product showed the presence of the Ni<sub>3</sub>Al phase and a crystallite size close to 40 nm. Scanning and transmission electron microscopy revealed the hollow morphology of the studied Ni<sub>3</sub>Fe microspheres. Their walls were assembled from crystallites with diameters of 30 – 60 nm.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"648 - 652"},"PeriodicalIF":0.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of a Mechanoacoustic Method for Preparing a Multicomponent Charge for Producing Ceramics from Aluminosilicate Raw Materials 应用机械声学方法制备多组分炉料，利用铝硅酸盐原料生产陶瓷
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-22 DOI: 10.1007/s11148-024-00905-6
S. A. Shakhov
{"title":"Application of a Mechanoacoustic Method for Preparing a Multicomponent Charge for Producing Ceramics from Aluminosilicate Raw Materials","authors":"S. A. Shakhov","doi":"10.1007/s11148-024-00905-6","DOIUrl":"10.1007/s11148-024-00905-6","url":null,"abstract":"<p>The efficiency of using a mechanoacoustic method for preparing a multicomponent charge for producing ceramics from highly dispersed aluminosilicate raw materials is evaluated. The influence of ultrasonic dispersion and mechanical activation on the dispersed phase structural state is evaluated using x-ray diffraction analysis based upon changes in the size of particles and crystallites that make up an aggregate. It is established that with the help of mechanoacoustic treatment in powder represented by a mixture of differently active particles it is possible to achieve maximum structural homogeneity by reducing the size of local inhomogeneities. It is shown that use of montmorillonite as an additive to a charge in combination with mechanical-acoustic treatment reduces the sintering temperature and makes it possible to prepare ceramic with a more uniform structure and high strength.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"643 - 647"},"PeriodicalIF":0.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aluminum Titanate and High-Temperature Heat-Resistant Compositions with Its Participation. Part 1. General Information, Phase Diagram, Crystal Structure 钛酸铝及其参与的高温耐热复合材料。第 1 部分。一般信息、相图、晶体结构
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-22 DOI: 10.1007/s11148-024-00896-4
A. V. Rusinov, S. A. Suvorov, V. N. Fishchev
{"title":"Aluminum Titanate and High-Temperature Heat-Resistant Compositions with Its Participation. Part 1. General Information, Phase Diagram, Crystal Structure","authors":"A. V. Rusinov,&nbsp;S. A. Suvorov,&nbsp;V. N. Fishchev","doi":"10.1007/s11148-024-00896-4","DOIUrl":"10.1007/s11148-024-00896-4","url":null,"abstract":"<p>Since the early 1950s, aluminum titanate has attracted attention as a basis for the creation of high-temperature heat-resistant materials. This is due to a combination of a number of useful properties, the nature of which lies in the characteristics of the crystal structure and behavior of aluminum titanate when heated. The article generalizes information regarding the phase diagram and crystal structure of aluminum titanate.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"590 - 594"},"PeriodicalIF":0.4,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal Beneficiation of Sulfide Ore Materials 硫化矿材料的热选矿
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-21 DOI: 10.1007/s11148-024-00895-5
S. Ya. Davydov, R. A. Apakashev, A. M. Amdur, N. G. Valiev, S. A. Fedorov
{"title":"Thermal Beneficiation of Sulfide Ore Materials","authors":"S. Ya. Davydov,&nbsp;R. A. Apakashev,&nbsp;A. M. Amdur,&nbsp;N. G. Valiev,&nbsp;S. A. Fedorov","doi":"10.1007/s11148-024-00895-5","DOIUrl":"10.1007/s11148-024-00895-5","url":null,"abstract":"<p>Including sulfide ore beneficiation tailings in sulfide ore processing is mainly ascribed to their use in the construction industry. In addition to dump products, various other wastes are formed during processing of sulfide ore materials, and these wastes are sent into circulation for pyrometallurgical processing. This study proposes a device for thermal beneficiation of gold-containing sulfide ore materials using a tubular purge grate. Gas purging through the holes of hollow rings, which are arranged in a staggered order, will evenly distribute bubbles throughout the volume of the slag melt and also evenly mix it. Gas purging of only the molten slag will reduce energy consumption.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"585 - 589"},"PeriodicalIF":0.4,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Ash-Slag on Drying of a Ceramic Sample Based on Non-Ferrous Metallurgy Waste 灰渣对基于有色金属冶金废料的陶瓷样品干燥的影响
IF 0.4 4区 材料科学
Refractories and Industrial Ceramics Pub Date : 2024-10-19 DOI: 10.1007/s11148-024-00900-x
V. Z. Abdrakhimov, D. V. Abdrakhimov
{"title":"The Effect of Ash-Slag on Drying of a Ceramic Sample Based on Non-Ferrous Metallurgy Waste","authors":"V. Z. Abdrakhimov,&nbsp;D. V. Abdrakhimov","doi":"10.1007/s11148-024-00900-x","DOIUrl":"10.1007/s11148-024-00900-x","url":null,"abstract":"<p>Introduction of ash-slag into the ceramic composition as a desiccant, which is a non-shrinkable material, contributes to a more uniform moisture distribution within a sample and its effective removal during drying. This also has a positive effect on ceramic product molding and drying processes. Ash-slag must be introduced into ceramic masses to reduce shrinkage during drying, increase moisture conductivity, however, it should be borne in mind that this reduces the ceramic product strength under compression. Optimum compositions for effective drying contain 20 – 24 % ash slag. A regression analysis method is used to predict the results that are not provided in an experiment.</p>","PeriodicalId":751,"journal":{"name":"Refractories and Industrial Ceramics","volume":"64 6","pages":"614 - 620"},"PeriodicalIF":0.4,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142598966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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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