Journal of Superhard Materials最新文献_第5页

Increasing the Lifetime of Water Transportation Vehicles by Using Multifunctional Composites with a Polymer Matrix, Ultradisperse Diamond, and Discrete Fibrous Filler 通过使用含有聚合物基体、超分散金刚石和离散纤维填料的多功能复合材料提高水上运输车辆的使用寿命

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010027

A. V. Buketov, Yu. M. Shulga, I. P. Fesenko, O. M. Bezbakh, O. A. Pastukh

{"title":"Increasing the Lifetime of Water Transportation Vehicles by Using Multifunctional Composites with a Polymer Matrix, Ultradisperse Diamond, and Discrete Fibrous Filler","authors":"A. V. Buketov, Yu. M. Shulga, I. P. Fesenko, O. M. Bezbakh, O. A. Pastukh","doi":"10.3103/S1063457624010027","DOIUrl":"10.3103/S1063457624010027","url":null,"abstract":"Epoxy resin polymer composites with improved mechanical and thermophysical properties have been developed. To improve the material characteristics, an ultradisperse diamond and a multifunctional discrete fibrous (polyester–viscose–elastane) filler are added to the epoxy oligomer. The following properties of the composites are studied: hardness, residual stress, and thermal coefficients of linear expansion. It is established that the optimal concentration is in the range of q = 0.02–0.03 wt % relative to 100 wt % of the epoxy matrix for the multifunctional discrete fibrous filler and 0.05 wt % per 100 wt % of the epoxy matrix for the ultradisperse diamond. The models of formation of the structure of composites during the cross-linking process are proposed. They imply the presence of a polymer in the composites, an additional filler in the form of fibers, and a third structure in the form of external surface layers that are formed around the fibers in the polymerization process. The models illustrate the formation of the structure of composites at the micro-, meso-, and macroscopic levels.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 1","pages":"40 - 54"},"PeriodicalIF":1.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026253","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 Impact of the Hydrogen Index of the Process Fluid on Diamond Abrasive Wheel Performance 加工液氢指数对金刚石砂轮性能的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010064

V. I. Lavrinenko

引用次数: 0

Dielectric Properties of Synthetic Diamond Polycrystals 合成金刚石多晶体的介电性能

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010088

L. O. Romanko, O. O. Bochechka, O. I. Chernienko, O. V. Kush

引用次数: 0

Flotation Separation as a Method of Improving the Uniformity of Synthetic Diamond Powders by Their Morphometric Characteristics, Grain Shape, and Grain Composition 浮选分离是一种通过形态特征、晶粒形状和晶粒成分改善人造金刚石粉末均匀性的方法

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010076

G. A. Petasyuk, H. D. Ilnytska, G. A. Bazalii, N. O. Oleinyk, Yu. V. Syrota

{"title":"Flotation Separation as a Method of Improving the Uniformity of Synthetic Diamond Powders by Their Morphometric Characteristics, Grain Shape, and Grain Composition","authors":"G. A. Petasyuk, H. D. Ilnytska, G. A. Bazalii, N. O. Oleinyk, Yu. V. Syrota","doi":"10.3103/S1063457624010076","DOIUrl":"10.3103/S1063457624010076","url":null,"abstract":"A review of papers on the application of flotation separation for synthetic diamond powders has been performed. It has been established that the applied use of this method is generally focused on enriching the diamond synthesis product and improving the quality of already produced conditioned synthetic diamond powders by their individual characteristics, in particular, the static strength of grains. Some results from the comparative quantitative study of the grain projection roughness and other morphometric and technological properties of the foam and chamber products from the flotation separation of conditioned abrasive powder AC20 100/80 are presented. For the first time, it has been established at a quantitative level that the form fraction powders have lower grain projection roughness and specific perimeter values as compared to the chamber fraction. Just these morphometric characteristics are indirectly responsible for developing the surface of grains, i.e., for their roughness. It has been shown that the known scientific and methodical means for the indirect analytical diagnosis of the morphometric characteristics and technological properties of diamond abrasive powder provide reliable information to make a decision about the quality of flotation separation and the advisability of its repeated or multistage application.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 1","pages":"65 - 73"},"PeriodicalIF":1.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026368","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

Anisotropic Charge Transport in HPHT Diamonds 高压热处理钻石中的各向异性电荷传输

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S1063457624010052

V. І. Grushko, R. Yu. Chaplynskyi, Iu. S. Yamnenko, O. O. Leshchuk, E. I. Mitskevich, S. O. Ivakhnenko, V. V. Lysakovskyi, O. O. Zanevskyi, E. E. Petrosyan, T. V. Mykytiuk

{"title":"Anisotropic Charge Transport in HPHT Diamonds","authors":"V. І. Grushko, R. Yu. Chaplynskyi, Iu. S. Yamnenko, O. O. Leshchuk, E. I. Mitskevich, S. O. Ivakhnenko, V. V. Lysakovskyi, O. O. Zanevskyi, E. E. Petrosyan, T. V. Mykytiuk","doi":"10.3103/S1063457624010052","DOIUrl":"10.3103/S1063457624010052","url":null,"abstract":"A photovoltaic method is developed to determine the anisotropy of transport properties of the main charge carriers in HPHT diamonds with an electronic type of conductivity. The results of a comparative analysis of the mobility and lifetime of main charge carriers in the cubic {001} and octahedral {111} growth sectors of diamond samples cut from diamond single crystals grown in the Fe–Ni–C system are given. The mobility of most charge carriers is estimated from the experimentally measured dependence of the resistivity of a diamond sample on the voltage applied to the electrical contacts. When the electric field strength varied in the range from –1 to 1 V μm–1, the resistivity of samples from the cubic and octahedral diamond growth sectors changed on average within the range of 0.15 × 1013–2.5 × 1013 and 0.1 × 1013–0.8 × 1013 Ω cm, respectively. The lifetime of most carriers is assessed by measuring the spectral current sensitivity under irradiation of diamond samples with ultraviolet light at a wavelength of 225 nm. It has been established that the best values of mobility and lifetime are achieved in the cubic crystal growth sector, in which the lifetime and mobility of the majority of charge carriers are greater than those in the octahedral sector by factors of 3.5–4.5 and 1.7–2.5, respectively. Our results demonstrate the suitability of the photovoltaic method for fast and efficient comparative analysis of the transport properties of charge carriers, which can be used in the technology of selecting diamond substrates in the production of devices of diamond based electronics.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 1","pages":"23 - 31"},"PeriodicalIF":1.2,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140026142","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

Dynamic Tensile Strength Limit of BL-Group Ceramic Matrix Composites Synthesized in the cBN–Carbide–Al System 在 cBN-Carbide-Al 体系中合成的 BL 组陶瓷基复合材料的动态拉伸强度极限

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-03-04 DOI: 10.3103/S106345762401009X

D. A. Stratiichuk, L. M. Devin, S. V. Richev, V. Z. Turkevich

引用次数: 0

Effect of Varying Graphite Concentration on Electrodynamic Properties of AlN-Based Composite Materials 不同石墨浓度对氮化铝基复合材料电动特性的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-01-18 DOI: 10.3103/S1063457623060102

T. B. Serbeniuk, T. O. Prikhna, V. B. Sverdun, V. V. Oliynyk, V. I. Grygoruk, V. V. Zagorodnii, M. V. Karpets, S. S. Ponomaryov, A. A. Marchenko, L. O. Polikarpova

引用次数: 0

Studying the Performance Features of Drilling Rock Destruction and Technological Tools 研究钻探岩石破坏和技术工具的性能特点

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-01-18 DOI: 10.3103/S1063457623060059

Ye. A. Koroviaka, A. O. Ihnatov, A. V. Pavlychenko, Karel Valouch, V. O. Rastsvietaiev, O. V. Matyash, M. R. Mekshun, S. O. Shypunov

{"title":"Studying the Performance Features of Drilling Rock Destruction and Technological Tools","authors":"Ye. A. Koroviaka, A. O. Ihnatov, A. V. Pavlychenko, Karel Valouch, V. O. Rastsvietaiev, O. V. Matyash, M. R. Mekshun, S. O. Shypunov","doi":"10.3103/S1063457623060059","DOIUrl":"10.3103/S1063457623060059","url":null,"abstract":"The principal results of studying the performance mechanism of drilling bits with a modernized cutting and bottomhole assembly system were compared. An engineering method of calculating the minimum axial load required for highly efficient bulk destruction was formulated. The existence of stable relation between the possible penetration depth of a single drilling rock destruction tool and the implemented rotation speed at a certain maintained axial load was proven. Rational parameters were determined for the drilling regime of bits of 112 and 132 mm in diameter. A method of arranging the cutting structure on the roller of a bit was proposed to provide a 50–100-% increase in the mechanical velocity in every certain case. Based on the measured speeds per run in drilling with the proposed bits, the repeated destruction of separated bottomhole particles beneath the roller of a bit was revealed to be prevented to a certain extent to essentially increase the service life of the tool. The destruction conditions were established to become more favorable under the hydrostatic pressure of a flushing liquid column in the case when the bits with the modernized cutting structure were applied. The application of special lubricating impurities for the chemical treatment of drilling slurries was shown to provide a 2–3-fold decrease in the drillstring rotation power in the average. In addition to the control over the lubricating capability of drilling slurries, the active impurities were revealed to have a positive effect on the viscosity and static shear stress values to be recommendable for use in drilling the rocks prone to intensive absorption and drilling slurry formation.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 6","pages":"466 - 476"},"PeriodicalIF":1.2,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139497224","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

Novel Ultrahard Carbon Allotropes from Crystal Chemistry and First Principles: Rhombohedral ene-C21 and yne-C24 从晶体化学和第一原理看新型超硬碳异构体：斜方体烯-C21 和炔-C24

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-01-18 DOI: 10.3103/S1063457623060072

Samir F. Matar, Vladimir L. Solozhenko

引用次数: 0

Influence of Temperature in Barothermal Treatment of Sintered Cemented Carbides on the Evolution of Their Structure and Properties 烧结硬质合金的巴氏热处理温度对其结构和性能演变的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-01-18 DOI: 10.3103/S1063457623060047

I. O. Hnatenko, I. V. Andreiev, S. O. Lysovenko, O. S. Roik, O. S. Osipov, T. O. Kosenchuk

引用次数: 0