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Journal of Superhard Materials最新文献

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Determining the Conditions for Achieving the Plastic Regime of Diamond Grinding of Ceramics from the Standpoint of Estimating Energy Costs of Processing 从估算加工能源成本的角度确定实现陶瓷金刚石磨削塑性状态的条件
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010070
V. I. Lavrinenko, V. Yu. Solod
{"title":"Determining the Conditions for Achieving the Plastic Regime of Diamond Grinding of Ceramics from the Standpoint of Estimating Energy Costs of Processing","authors":"V. I. Lavrinenko,&nbsp;V. Yu. Solod","doi":"10.3103/S1063457623010070","DOIUrl":"10.3103/S1063457623010070","url":null,"abstract":"<p>We studied the plastic mode of processing brittle materials, the effect of the change in the working surface of the diamond wheel during processing, and ways to achieve such a mode. To assess adequately the energy intensity of processing with diamond wheels, we proposed to calculate the specific energy density of grinding, considering the volume of material spent during the processing of the wheel working layer. We derived an equation for calculating the specific energy density during the diamond grinding of ceramics. The plastic regime occurs precisely when the specific energy density of grinding becomes close to the specific heat of melting of ceramic materials.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"65 - 71"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5051774","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
Promising Binders of Complex Oligophenylenes Compounds with Metals for Creating Composites Based on Adaptive Hybrid-Structured Polymer Systems 基于自适应杂化结构聚合物体系制备复合材料的有前途的金属-低聚苯乙烯复合物结合剂
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010082
E. O. Pashchenko, D. O. Savchenko, S. V. Skorkhod, R. M. Kurganov, S. An. Klimenko, Yu. Yu. Rumiantseva, S. A. Kukharenko, O. M. Kaidash
{"title":"Promising Binders of Complex Oligophenylenes Compounds with Metals for Creating Composites Based on Adaptive Hybrid-Structured Polymer Systems","authors":"E. O. Pashchenko,&nbsp;D. O. Savchenko,&nbsp;S. V. Skorkhod,&nbsp;R. M. Kurganov,&nbsp;S. An. Klimenko,&nbsp;Yu. Yu. Rumiantseva,&nbsp;S. A. Kukharenko,&nbsp;O. M. Kaidash","doi":"10.3103/S1063457623010082","DOIUrl":"10.3103/S1063457623010082","url":null,"abstract":"<p>The modern generation of instrumental composite materials with a fundamentally new mechanism of contact interaction with processed materials was created through the use of binder polymers with embedded metallocene fragments. The structure of hybrid oligomers obtained by the interaction of oligophenylene and complex compounds of vanadium, iron, and copper was determined; it is a combination of organic and inorganic fragments. Inorganic fragments are represented by metal ions and clusters, bonded by covalent and coordination bonds with organic fragments. Organic fragments have a metallocene structure connected by methylene sites with weakly conjugated benzene rings. Clusters and metal ions can be located both between the planes of metallocenes and weakly conjugated rings and between oligomer chains as their continuation.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"46 - 53"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5049046","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
Combustion Synthesis of B4C–TiB2 Nanocomposite Powder: Effect of Mg Particle Size on SHS and Optimization of Acid Leaching Process 燃烧合成B4C-TiB2纳米复合粉体:Mg粒径对SHS的影响及酸浸工艺优化
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010033
Ozan Coban, Mehmet Bugdayci, Serkan Baslayici, M. Ercan Acma
{"title":"Combustion Synthesis of B4C–TiB2 Nanocomposite Powder: Effect of Mg Particle Size on SHS and Optimization of Acid Leaching Process","authors":"Ozan Coban,&nbsp;Mehmet Bugdayci,&nbsp;Serkan Baslayici,&nbsp;M. Ercan Acma","doi":"10.3103/S1063457623010033","DOIUrl":"10.3103/S1063457623010033","url":null,"abstract":"<p>In this study, composite nanoparticles of B<sub>4</sub>C–TiB<sub>2</sub> were produced by combustion synthesis. Production was carried out by self-propagating high-temperature synthesis (SHS) method in atmospheric conditions by using oxide raw materials (B<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>), carbon black and magnesium as a reducing agent. The effect of Mg particle size on SHS efficiency was investigated. Single-stage and 2‑stage leaching processes were carried out to remove undesired phases in the SHS product. In the 1st HCl acid leaching process, the leaching temperature and leaching duration were optimized. As a result of the 2nd leaching process with the addition of carbonic acid and H<sub>2</sub>O<sub>2</sub>, commercial quality nanoparticle synthesis was performed. Results revealed that the increase in Mg particle size decreased the SHS efficiency, however very fine particle sized Mg usage decreased the SHS efficiency due to the evaporation and scatter of Mg. The optimum Mg particle size was determined as 75–150 µm. Since it has a significant effect on the removal of Mg-borate phases, 90°C was determined as the optimum leaching temperature. The optimum leaching duration was determined to be 60 min. As a result of optimized leaching processes, 99.11% purity B<sub>4</sub>C–TiB<sub>2</sub> nanoparticle with 193.5 nm particle size and 30.65 m<sup>2</sup>/g surface area was synthesized.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"20 - 30"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5049047","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
Roughness of Polished Surfaces of Optoelectronic Components Made of Polymeric Optical Materials 高分子光学材料光电元件抛光表面粗糙度研究
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010045
Yu. D. Filatov, V. I. Sidorko, S. V. Sokhan’, S. V. Kovalev, A. Y. Boyarintsev, V. A. Kovalev, O. Y. Yurchyshyn
{"title":"Roughness of Polished Surfaces of Optoelectronic Components Made of Polymeric Optical Materials","authors":"Yu. D. Filatov,&nbsp;V. I. Sidorko,&nbsp;S. V. Sokhan’,&nbsp;S. V. Kovalev,&nbsp;A. Y. Boyarintsev,&nbsp;V. A. Kovalev,&nbsp;O. Y. Yurchyshyn","doi":"10.3103/S1063457623010045","DOIUrl":"10.3103/S1063457623010045","url":null,"abstract":"<p>As established from the results of studying the mechanism of nanorelief formation of the treated surface during polishing of polymer optical materials by means of dispersed systems based on micro- and nanoparticle polishing powders, roughness parameters <i>Ra</i>, <i>Rq</i>, and <i>R</i><sub>max</sub> increase linearly with an increase in the size of the sludge particles and decrease with an increase in the transfer energy. It is shown that they substantially increase with a decrease in the spectral separation between the processed material and the polishing powder particle and are extremely dependent on the dielectric constant differences between the processed material, the polishing powder, and the dispersed system. It is found that the roughness parameters of the treated surface decrease exponentially with an increase in the frequency index of Förster resonance energy transfer (FRET) efficiency and increase linearly with an increase in the time index of FRET efficiency. In the case of an increase in the <i>Q</i> factor of the resonator formed by the surfaces of the processed material and the polishing tool, the roughness parameters of the polished surfaces of parts made of polymeric optical materials increase linearly.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"54 - 64"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5488549","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: 2
Continuum Simulation of the Elastic Behavior of Nanosized Diamond Single Crystals 纳米金刚石单晶弹性行为的连续模拟
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010069
V. I. Kushch
{"title":"Continuum Simulation of the Elastic Behavior of Nanosized Diamond Single Crystals","authors":"V. I. Kushch","doi":"10.3103/S1063457623010069","DOIUrl":"10.3103/S1063457623010069","url":null,"abstract":"<p>Two continuum models are proposed for predicting stress fields and elastic properties of nanosized diamond monocrystals. The first model is a boundary value problem of the elasticity theory formulated for a sphere with a thin shell, which ensures consideration of the effect of the free surface energy on the elastic behavior of a diamond nanocrystal. In the second model, the surface energy is taken into account through the boundary condition in accordance with the Gurtin–Murdoch theory of material surfaces. The geometric and material parameters of the models are determined by comparison with the results of classical molecular dynamics. A parametric analysis of the developed models is carried out, and the trends in the influence of the nanoparticle size on the lattice parameter, stress concentration, and bulk elastic modulus of diamond are determined.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"1 - 9"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5049376","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
A Study of the Effect of the Method of Matching the Actual Geometric Parameters of the Grain to the Parameters of Its Adopted 3D Model on the Error of Determining the Thickness of the Diamond Powder Coating 晶粒实际几何参数与其采用的 3D 模型参数的匹配方法对金刚石粉末涂层厚度测定误差的影响研究
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010094
G. A. Petasyuk
{"title":"A Study of the Effect of the Method of Matching the Actual Geometric Parameters of the Grain to the Parameters of Its Adopted 3D Model on the Error of Determining the Thickness of the Diamond Powder Coating","authors":"G. A. Petasyuk","doi":"10.3103/S1063457623010094","DOIUrl":"10.3103/S1063457623010094","url":null,"abstract":"<p>The methodological details of the indirect analytical determination of the thickness of the diamond powder coating, which is an important characteristic of the latter, are analyzed. The key role of the method used for matching the actual geometric parameters of the grain to the parameters of its adopted 3D model as a factor that has an effect on the error in determining the thickness of the coating is proven. The results of a comparative study of the effect of the method of matching the actual geometric parameters of the test grain (cuboctahedron) to the parameters of its accepted 3D models (sphere, cube, and ellipsoid) on the thickness of the coating and the error of its determination are given.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"72 - 81"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5488563","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
A Study on the Formation and Sintering of Powders Synthesized from ZrO2 Micro- and Nanoparticles from Fluoride Solutions 氟化溶液中ZrO2微粒子和纳米粒子合成粉体的形成和烧结研究
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010057
E. S. Gevorkyan, D. S. Sofronov, V. P. Nerubatskyi, V. O. Chyshkala, O. M. Morozova, O. M. Lebedynskyi, P. V. Mateychenko
{"title":"A Study on the Formation and Sintering of Powders Synthesized from ZrO2 Micro- and Nanoparticles from Fluoride Solutions","authors":"E. S. Gevorkyan,&nbsp;D. S. Sofronov,&nbsp;V. P. Nerubatskyi,&nbsp;V. O. Chyshkala,&nbsp;O. M. Morozova,&nbsp;O. M. Lebedynskyi,&nbsp;P. V. Mateychenko","doi":"10.3103/S1063457623010057","DOIUrl":"10.3103/S1063457623010057","url":null,"abstract":"<p>The effect of the conditions of synthesis on the formation of micro- and nanoparticles of zirconium dioxide from a fluoride solution has been studied. It is shown that the finest particles are formed by precipitation from dilute solutions with a zirconium concentration of 0.02–0.04 mol/L and impurities of polyvinyl alcohol at a mass ratio of <i>m</i><sub>Zr</sub> : <i>m</i><sub>PVC</sub> 1 : 0.1. To sinter ZrO<sub>2</sub> nanoparticles, it is proposed to use the electroconsolidation method in a vacuum to obtain ceramics with high values of the hardness and elastic modulus.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"31 - 45"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5488564","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: 2
Prediction of a Reentrant Phase Transition Behavior of Cotunnite in Zirconia and Hafnia at High Pressures 高压下氧化锆和铪中钴矿重入相变行为的预测
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-03-27 DOI: 10.3103/S1063457623010021
Yahya Al-Khatatbeh, Khaldoun Tarawneh, Ahmad M. Alsaad
{"title":"Prediction of a Reentrant Phase Transition Behavior of Cotunnite in Zirconia and Hafnia at High Pressures","authors":"Yahya Al-Khatatbeh,&nbsp;Khaldoun Tarawneh,&nbsp;Ahmad M. Alsaad","doi":"10.3103/S1063457623010021","DOIUrl":"10.3103/S1063457623010021","url":null,"abstract":"<p><i>First-principles</i> calculations within the framework of density-functional theory (DFT) are implemented to investigate the high-pressure behavior of ultrahigh high-pressure phases of zirconia (ZrO<sub>2</sub>) and hafnia (HfO<sub>2</sub>) compounds. We have studied the phase relations among the highest-pressure phases of these dioxides: The previously observed OII (cotunnite) phase, Fe<sub>2</sub>P-type phase, and the recently predicted Ni<sub>2</sub>In-type phase. Our calculations, using the generalized gradient approximation (GGA), predict unusual phase transition of OII phase with respect to Fe<sub>2</sub>P phase. In both dioxides, our enthalpy calculations show that OII phase transforms to Fe<sub>2</sub>P phase at 96 GPa (122 GPa) for ZrO<sub>2</sub> (HfO<sub>2</sub>), where Fe<sub>2</sub>P phase remains stable up to 254 GPa (310 GPa) in ZrO<sub>2</sub> (HfO<sub>2</sub>) before it transforms back to OII phase, indicating a reentrant transition behavior of OII phase. Our calculations show that OII → Fe<sub>2</sub>P and Fe<sub>2</sub>P → OII transitions are associated with a slight change in both volume and enthalpy. Consequently, we have concluded that the transition to Ni<sub>2</sub>In phase likely occurs from OII phase rather than Fe<sub>2</sub>P phase, and thus we provide an updated high-pressure phase transition sequence for zirconia and hafnia at such extreme pressures. The OII → Ni<sub>2</sub>In transition is predicted to occur at 302 and 372 GPa in zirconia and hafnia, respectively. Furthermore, to obtain a deeper insight into the mechanism of the phase transitions in ZrO<sub>2</sub> and HfO<sub>2</sub>, the effect of the components of the enthalpy difference across our predicted phase transitions has been thoroughly investigated.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 1","pages":"10 - 19"},"PeriodicalIF":0.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5049377","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: 1
HPHT Crystallization of Diamond on Seed with Use of Carbon Solvents Prepared by Powder Metallurgy Methods 用粉末冶金法制备的碳溶剂在种子上进行金刚石的高温高温结晶
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-01-17 DOI: 10.3103/S1063457622060065
T. V. Kovalenko, V. Yu. Klochok, A. V. Burchenia, S. O. Ivakhnenko, V. V. Lysakovskyi, O. O. Zanevskyi, O. M. Suprun
{"title":"HPHT Crystallization of Diamond on Seed with Use of Carbon Solvents Prepared by Powder Metallurgy Methods","authors":"T. V. Kovalenko,&nbsp;V. Yu. Klochok,&nbsp;A. V. Burchenia,&nbsp;S. O. Ivakhnenko,&nbsp;V. V. Lysakovskyi,&nbsp;O. O. Zanevskyi,&nbsp;O. M. Suprun","doi":"10.3103/S1063457622060065","DOIUrl":"10.3103/S1063457622060065","url":null,"abstract":"<p>Thermobaric formation of carbon solvent alloys under high pressures of 4–6 GPa and at temperatures of 1200–1300°C is used to grow structurally perfect diamond single crystals in the region of thermodynamic stability. It is shown that the formation of samples with minimum values of porosity in the range from 2.49 to 4.50% ensures a stable distribution of elements over the growth volume even in the presence of large differences in the density of elements. For comparison, the results of experiments on the formation of solvent alloys by the methods of powder metallurgy and direct isostatic pressing with subsequent sintering and by the methods of hot pressing of powders are given. It is shown that the samples obtained by classical methods have relatively large final porosity values and cannot be used in the future as carbon solvent alloys during directed growth of diamond single crystals at high pressures and temperatures.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"44 6","pages":"379 - 386"},"PeriodicalIF":0.9,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4677548","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
CVD Diamonds in Diamond Tools: Features and Properties, Peculiarities of Processing, and Application in Modern Diamond Tools (Review) 金刚石工具中的CVD金刚石:特性、加工特点及其在现代金刚石工具中的应用(综述)
IF 0.9 4区 材料科学
Journal of Superhard Materials Pub Date : 2023-01-17 DOI: 10.3103/S1063457622060077
V. I. Lavrinenko
{"title":"CVD Diamonds in Diamond Tools: Features and Properties, Peculiarities of Processing, and Application in Modern Diamond Tools (Review)","authors":"V. I. Lavrinenko","doi":"10.3103/S1063457622060077","DOIUrl":"10.3103/S1063457622060077","url":null,"abstract":"<p>The current state of research on the use of CVD diamonds in diamond tools is reviewed. Features of single crystal and polycrystalline CVD diamonds and CVD diamond films are shown. Their comparative properties are given. Their structure and the peculiarities of processing their surfaces are shown. Technological features of the preparation of diamond tools with a working layer of CVD diamonds and the use of such tools are discussed. Samples of polycrystalline CVD diamonds for the dressing tool and features of their application in the dressing rollers are shown.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"44 6","pages":"431 - 449"},"PeriodicalIF":0.9,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4679177","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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