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Journal of Superhard Materials最新文献

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Thermal Conductivity of a Hot-Pressed AlB12–AlN Ceramic Composite 热压 AlB12-AlN 陶瓷复合材料的导热性能
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020072
T. O. Prikhna, P. P. Barvitskyi, O. O. Vasiliev, V. B. Muratov, P. V. Mazur, V. B. Sverdun, V. M. Kolodnitskyi, V. I. Omelianenko, I. P. Fesenko
{"title":"Thermal Conductivity of a Hot-Pressed AlB12–AlN Ceramic Composite","authors":"T. O. Prikhna,&nbsp;P. P. Barvitskyi,&nbsp;O. O. Vasiliev,&nbsp;V. B. Muratov,&nbsp;P. V. Mazur,&nbsp;V. B. Sverdun,&nbsp;V. M. Kolodnitskyi,&nbsp;V. I. Omelianenko,&nbsp;I. P. Fesenko","doi":"10.3103/S1063457624020072","DOIUrl":"10.3103/S1063457624020072","url":null,"abstract":"<p>The results of studying the thermal conductivity of hot-pressed AlB<sub>12</sub>–AlN ceramic composites with different AlN concentrations were presented. The thermal conductivity coefficient was measured for composite specimens at room temperature and approximated for AlB<sub>12</sub>.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"161 - 162"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532235","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
Superhard Hexagonal sp3-Bonded BN Polytypes and BC2N from Crystal Chemistry and First Principles 从晶体化学和第一性原理看超硬六方 sp3 键 BN 聚类和 BC2N
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020060
Samir F. Matar, Vladimir L. Solozhenko
{"title":"Superhard Hexagonal sp3-Bonded BN Polytypes and BC2N from Crystal Chemistry and First Principles","authors":"Samir F. Matar,&nbsp;Vladimir L. Solozhenko","doi":"10.3103/S1063457624020060","DOIUrl":"10.3103/S1063457624020060","url":null,"abstract":"<p>In the framework of a crystallochemical approach, new hexagonal (<i>P</i>6<sub>3</sub>/<i>mc</i>) <i>sp</i><sup>3</sup>-bonded BN polytypes (4H, 6H and 8H) and ternary BC<sub>2</sub>N were proposed by rationalized substitutions of C for B and N in hexagonal carbon allotrope C<sub>8</sub> (4C carbon) with cfc topology, and density functional theory calculations of their ground states were performed. All new phases were found to be cohesive and stable mechanically (elastic constants) and dynamically (phonon band structures). According to modern models of hardness, the new phases were recognized as superhard with Vickers hardness above 50 GPa. Their electronic band structures exhibit insulating behavior with large band gaps.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"81 - 93"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528888","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
СNB Wheels for Dry Grinding High-Speed Steel: Specific Processing Energy and Energy Efficiency 用于高速钢干磨的 NB 砂轮：特定加工能量和能效
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020047
V. I. Lavrinenko
{"title":"СNB Wheels for Dry Grinding High-Speed Steel: Specific Processing Energy and Energy Efficiency","authors":"V. I. Lavrinenko","doi":"10.3103/S1063457624020047","DOIUrl":"10.3103/S1063457624020047","url":null,"abstract":"<p>Research on grinding high-speed steel with cubic boron nitride wheels has revealed challenges in evaluating the energy efficiency of grinding with diamond abrasive wheels made of superhard materials (SHMs) for hard-to-machine tool materials. These challenges arise due to the specific energy consumption index of the grinding process, which determines the ratio of effective grinding power. In addition to considering specific energy consumption and the energy efficiency coefficient of the process corresponding to the processing process, it is imperative to account for the wear of diamond abrasive wheels through the index of relative consumption of SHM grains in the working layer of the wheel during grinding. A novel relationship for calculating the energy efficiency coefficient (EEC) for diamond abrasive processing with SHM wheels has been proposed. It has been demonstrated that reducing the temperature in the grinding zone enhances the energy EEC. To achieve this temperature reduction, it is advisable to avoid metallic coating on the grains of SHMs and instead utilize an increased concentration of SHM grains in the working layer of the wheel. This adjustment results in an augmentation of the energy EEC, as elucidated by the proposed equation for calculating the EEC.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"154 - 160"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532391","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
Diamond Grinding of Ceramic Balls in an Annular Groove 环形槽中陶瓷球的金刚石磨削
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020096
S. V. Sokhan’, V. V. Voznyy, V. H. Sorochenko
{"title":"Diamond Grinding of Ceramic Balls in an Annular Groove","authors":"S. V. Sokhan’,&nbsp;V. V. Voznyy,&nbsp;V. H. Sorochenko","doi":"10.3103/S1063457624020096","DOIUrl":"10.3103/S1063457624020096","url":null,"abstract":"<p>The results of experimental study on the effect of the treatment regime on the shape accuracy of balls and the surface wear of a diamond wheel are presented for the diamond grinding of silicon nitride ceramic balls in an annular groove and with circular feed. The indicators of the shape accuracy of ground balls are the variance of ball diameters, the out-of-roundness profile shape factor, and wheel surface wear characterized by the radial working surface tilt angle and curvature coefficient. This effect is adequately described by the linear dependences of the ball diameter variance on the circular feed rate and wheel speed, the shape factor on the wheel speed, and the tilt angle and curvature coefficient on the circular feed rate. The treatment regime parameters, at which the studied ball grinding scheme is reasonable for application, are predicted.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"143 - 153"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528891","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
Low-Temperature Synthesis of TiC Coating on Diamond Surface by Thermal Explosion Reaction 通过热爆炸反应在金刚石表面低温合成 TiC 涂层
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020059
Jialin Liu, Baoyan Liang, Mingli Jiao
{"title":"Low-Temperature Synthesis of TiC Coating on Diamond Surface by Thermal Explosion Reaction","authors":"Jialin Liu,&nbsp;Baoyan Liang,&nbsp;Mingli Jiao","doi":"10.3103/S1063457624020059","DOIUrl":"10.3103/S1063457624020059","url":null,"abstract":"<p>A TiC coating was rapidly formed on the surface of diamond particles by thermal explosion reaction using Ti/Carbon black/PTFE/Diamond powders as raw material. XRD and SEM were used to analyze and observe the phase composition and microstructure of the coating. Results show that the phase composition of bonders was TiC, Ti, and TiF<sub>3</sub> after thermal explosion reaction. The diamond surface obtained after the reaction can achieve good coating. Changing the diamond content in the raw material can regulate the phase composition of the coating. The coating on the diamond surface was mainly composed of TiC. When the diamond content in the raw materials was 20–40%, the coating was composed of TiC and TiF<sub>3</sub>. When the diamond content in the raw material was 60–80%, the coating was composed of TiC and Ti.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"106 - 111"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503009","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
An Investigation into the Behavior of Liquid Drops on Heterogeneous Surfaces: A Theoretical and Experimental Approach 对异质表面上液滴行为的研究：理论与实验方法
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020023
A. A. Efremov, O. G. Gontar, O. B. Loginova, H. D. Ilnytska, S. P. Staryk
{"title":"An Investigation into the Behavior of Liquid Drops on Heterogeneous Surfaces: A Theoretical and Experimental Approach","authors":"A. A. Efremov,&nbsp;O. G. Gontar,&nbsp;O. B. Loginova,&nbsp;H. D. Ilnytska,&nbsp;S. P. Staryk","doi":"10.3103/S1063457624020023","DOIUrl":"10.3103/S1063457624020023","url":null,"abstract":"<p>We analyzed the results of the sessile drop method to examine experimental data regarding the behavior of liquid droplets on heterogeneous surfaces under the action of a magnetic field, their movement along the surface due to horizontal external forces, and in cases of detachment and dropping of the droplet onto a solid surface, compared to the outcomes of the simulation results obtained using the lattice Boltzmann method within a two-dimensional model. In most cases, there was a satisfactory qualitative agreement observed between the calculated and experimental data. This demonstrates the suitability and effectiveness of the proposed theoretical approach in exploring a broad spectrum of phenomena associated with the contact interaction between liquid and solid heterogeneous phases at both the meso- and macroscopic levels.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"129 - 142"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503010","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
Phase Formation and Diamond Retention in Cdiamond–(WC–Co)–ZrO2 Composites Formed by Spark Plasma Sintering Method 火花等离子烧结法形成的金刚石-(WC-Co)-ZrO2 复合材料中的相形成和金刚石保留率
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-06-17 DOI: 10.3103/S1063457624020084
B. T. Ratov, V. A. Mechnik, N. A. Bondarenko, E. S. Gevorkyan, V. M. Kolodnitskyi, A. B. Kalzhanova, P. S. Sundetova, Z. G. Utepov
{"title":"Phase Formation and Diamond Retention in Cdiamond–(WC–Co)–ZrO2 Composites Formed by Spark Plasma Sintering Method","authors":"B. T. Ratov,&nbsp;V. A. Mechnik,&nbsp;N. A. Bondarenko,&nbsp;E. S. Gevorkyan,&nbsp;V. M. Kolodnitskyi,&nbsp;A. B. Kalzhanova,&nbsp;P. S. Sundetova,&nbsp;Z. G. Utepov","doi":"10.3103/S1063457624020084","DOIUrl":"10.3103/S1063457624020084","url":null,"abstract":"<p>New data on the effect of a ZrO<sub>2</sub> nanopowder additive (from 0 to 10 wt %) on phase formation and structural transformations in the hard-alloy matrix in the region of destruction under impact loading and on diamond retention in composite diamond-containing 25С<sub>diamond</sub>–70.5WC–4.5Co materials formed by spark plasma sintering are presented. The sintered initial 94WC–6Co composite consists of the hexagonal WC phase with unit cell parameters <i>a</i> = 0.2906 nm and <i>с</i> = 0.2837 nm, the cubic Co<sub>3</sub>W<sub>3</sub>C phase (<i>а</i> = 1.1112 nm), and the hexagonal graphite phase. The sintered composites with ZrO<sub>2</sub> content from 0.5 to 10% is composed by the WC and Co<sub>3</sub>W<sub>3</sub>C structural phases, amorphous carbon, and the tetragonal ZrO<sub>2</sub> phase (<i>а</i> = 0.36019 nm, <i>с</i> = 0.5174 nm). It has been shown that, when the ZrO<sub>2</sub> content is increased, the sizes of phase components and average microstrains are more rapidly decreased in directions <i>с</i> and <i>а</i> of the 94WC–6Co composite. The addition of ZrO<sub>2</sub> to the 25С<sub>diamond</sub>–70.5WC–4.5Co composite improves diamond retention. In the sintered composites, diamond retention is improved due to that they have a higher content of the tetragonal ZrO<sub>2</sub> phase, which provides the transformational mechanism of strengthening in the hard-alloy matrix material via its structural transformations into a denser one and the formation of a more fine-grained matrix structure with thin interlayers of cobalt bonds between WC grains.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 2","pages":"112 - 128"},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528889","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
Deposition and Localization of Polishing Powder Wear Nanoparticles on the Processed Surface of Polymeric Optical Materials 抛光粉磨损纳米颗粒在聚合物光学材料加工表面的沉积和定位
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010040
Yu. D. Filatov, V. I. Sidorko, S. V. Kovalev, A. Y. Boyarintsev, V. A. Kovalev, O. Y. Yurchyshyn
{"title":"Deposition and Localization of Polishing Powder Wear Nanoparticles on the Processed Surface of Polymeric Optical Materials","authors":"Yu. D. Filatov,&nbsp;V. I. Sidorko,&nbsp;S. V. Kovalev,&nbsp;A. Y. Boyarintsev,&nbsp;V. A. Kovalev,&nbsp;O. Y. Yurchyshyn","doi":"10.3103/S1063457624010040","DOIUrl":"10.3103/S1063457624010040","url":null,"abstract":"<p>The investigation revealed patterns in the formation and localization of deposits of polishing powder wear nanoparticles on the processed surface during the polishing of polymeric materials using disperse systems of micro- and nanopowders. The total scattering cross section of polishing powder wear nanoparticles on sludge nanoparticles increases nonlinearly with the movement of particles, extremally depends on the product of spectral separation for dielectric constant separation between the processed material, polishing powder, and the disperse system, and exponentially increases with the resonator detuning. When polystyrene is polished using cerium dioxide micropowder, deposition on the processed surface is most likely to occur, with the maximum value of the total scattering cross section of polishing powder wear nanoparticles on sludge nanoparticles being at 49.7 Mb. Experimental data indicate that the localization of deposits with polishing powder wear nanoparticles on the processed surface occurs according to the distribution function of the total scattering cross section of polishing powder wear nanoparticles on sludge nanoparticles across circular zones, which aligns well with experimental results, within 12.5%. The experimentally determined average thickness of the deposit fragments of polishing powder wear nanoparticles, forming complete or partial coverage of the component surface, ranges from 1.1 to 1.5 µm.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 1","pages":"55 - 64"},"PeriodicalIF":1.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026254","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
Methodology for Studying Brittle Fracture of HTHP Diamond Single Crystals by Crack Propagation Analysis under Shock Load 通过冲击载荷下的裂纹扩展分析研究 HTHP 金刚石单晶脆性断裂的方法学
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010039
L. M. Devin, P. M. Lytvyn, S. O. Ivakhnenko, O. O. Zanevskyi
{"title":"Methodology for Studying Brittle Fracture of HTHP Diamond Single Crystals by Crack Propagation Analysis under Shock Load","authors":"L. M. Devin,&nbsp;P. M. Lytvyn,&nbsp;S. O. Ivakhnenko,&nbsp;O. O. Zanevskyi","doi":"10.3103/S1063457624010039","DOIUrl":"10.3103/S1063457624010039","url":null,"abstract":"<p>The behavior of type II<i>a</i> HTHP single crystal diamonds under shock loads created by means of Hopkinson–Kolsky pressure bars is studied. Controlled variation of load pulse magnitude and duration makes it possible to trace the complete history of crack progression. It ranges from crack initiation in regions of peak stress, through rapid crack propagation and the formation of a smooth surface, to stable crack growth accompanied by the formation of a densely packed array of fine ridges, and eventually to a deceleration and discontinuous crack movement, which culminate in a stepped structure upon the completion of step formation. Atomic force microscopy is employed to reveal the topographic characteristics of the fracture surface with spanning dimensions from 3 to 600 nm. The three-dimensional distribution of equivalent von Mises stresses throughout the entire crystal and respective crystal fragments after brittle fracture is also simulated in the study.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 1","pages":"14 - 22"},"PeriodicalIF":1.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026331","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
Investigation of the Influence of High Speed Sintering Regimes on the Structure and Properties of WC Based Carbide Composites with High Entropy Bonding 研究高速烧结工艺对高熵结合碳化钨基复合材料结构和性能的影响
IF 1.2 4区 材料科学
Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010106
O. A. Yurkova, A. V. Minitskyi, S. O. Nakonechnyi, Y. S. Shaposhnikova, I. I. Bilyk
{"title":"Investigation of the Influence of High Speed Sintering Regimes on the Structure and Properties of WC Based Carbide Composites with High Entropy Bonding","authors":"O. A. Yurkova,&nbsp;A. V. Minitskyi,&nbsp;S. O. Nakonechnyi,&nbsp;Y. S. Shaposhnikova,&nbsp;I. I. Bilyk","doi":"10.3103/S1063457624010106","DOIUrl":"10.3103/S1063457624010106","url":null,"abstract":"<p>The influence of the rate of sintering by electron beam sintering (EBS) and spark plasma sintering (SPS) methods on the formation of the microstructure and properties of a 90 wt % WC + 10 wt % FeCrNiWMo composite is studied. The effect of technological parameters of sintering on structure formation and phase composition of a metal ceramic composite with high entropy bonding is determined. The change in the stoichiometric composition of tungsten carbide after sintering the composite by the SPS method is investigated. The mechanical properties (strength, hardness, crack resistance, and compressive strength) of the samples sintered by the EBS and SPS methods are compared. It is found that the electron beam method is more promising than the spark-plasma method when sintering a metal ceramic composite with high entropy bonding under optimal conditions. The study results can be used in toolmaking and in the military industry for manufacturing armor piercing cores of ammunition for small arms.</p>","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 1","pages":"32 - 39"},"PeriodicalIF":1.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026138","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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