Journal of Superhard Materials最新文献

Melting of Boron-Rich Chalcogenides B12S and B12Se under Pressure 富硼硫族化合物B12S和B12Se在压力下的熔融

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040100

V. L. Solozhenko

引用次数: 0

Ablation Tests of Hot-Pressed Ultrahigh-Temperature HfB2 and HfB2–SiC Ceramic 热压超高温HfB2和HfB2 - sic陶瓷烧蚀试验

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040082

T. O. Prikhna, H. Ünsal, P. P. Barvitskyi, V. E. Moshchil

引用次数: 0

The Effect of Preparing Condition and Al Increase on the Bending Strength and Wearing Property of Mo(Si, Al)2-cBN Superhard Composite 制备条件和Al添加量对Mo(Si, Al)2-cBN超硬复合材料抗弯强度和耐磨性的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040112

Zhang Xiaoli, Wei li, Wang Yanbin, Liu Jiahui, Wang Zhuo, Ye Tengfei, Zheng Jiaqi, Zhang Yikang, Chen Zhangjing, Jiang Zongheng

{"title":"The Effect of Preparing Condition and Al Increase on the Bending Strength and Wearing Property of Mo(Si, Al)2-cBN Superhard Composite","authors":"Zhang Xiaoli,  Wei li, Wang Yanbin, Liu Jiahui, Wang Zhuo, Ye Tengfei, Zheng Jiaqi, Zhang Yikang, Chen Zhangjing, Jiang Zongheng","doi":"10.3103/S1063457625040112","DOIUrl":"10.3103/S1063457625040112","url":null,"abstract":"In this paper, Mo(Si, Al)2-cBN superhard composite was designed and prepared successfully in lower-temperature infiltrating melt aluminum at 975°C for 20 min to overcome shortcomings in low decompose temperature and oxidation resistance, high preparing temperature of present cBN/MAX composite. XRD showed that the main phase of Mo(Si, Al)2-cBN superhard composite were in-situ formed Mo (Si, Al)2 and remained cBN, and the vacuum atmosphere was more advantageous for it in gaining high density and llinear shrinkage, and the relationship between molding pressure and shrinkage of this composite obeyed a parabolic form in vacuum atmosphere. The increasement of infiltrated Al was helpful to its bending strength, when Al increased to same level as reported in c-BN/Al superhard materials as 2.86 at % or 9.8 vol %, the bending strength of Mo (Si, Al)2-cBN superhard composite reached the highest. And also, Mo(Si, Al)2-cBN ceramic-based superhard material owned excellent wearing property which was evaluated by friction and wear experiment between W18Cr4V counter-grinding ring and prepared (Mo(Si, Al)2-cBN ceramics block in dry friction model with a load of 49N.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 4","pages":"288 - 299"},"PeriodicalIF":1.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990604","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 Based in a Groove with Circular Feed under Oscillation 振动下基于圆进给槽的陶瓷球金刚石磨削

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040094

S. V. Sokhan’, V. V. Voznyy, V. H. Sorochenko

引用次数: 0

Assessment of Residual Stress in Protective Coatings on PCBN Substrates PCBN基板保护涂层残余应力的评估

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040045

S. A. Klymenko, A. S. Manokhin, S. An. Klymenko, Yu. O. Melniychuk, V. V. Belorusets, S. P. Starik, A. O. Chumak, M. Yu. Kopeіkina, S. V. Riabchenko

{"title":"Assessment of Residual Stress in Protective Coatings on PCBN Substrates","authors":"S. A. Klymenko, A. S. Manokhin, S. An. Klymenko, Yu. O. Melniychuk, V. V. Belorusets, S. P. Starik, A. O. Chumak, M. Yu. Kopeіkina, S. V. Riabchenko","doi":"10.3103/S1063457625040045","DOIUrl":"10.3103/S1063457625040045","url":null,"abstract":"This study refines the calculation-experimental approach to evaluating residual stress in thin vacuum-plasma protective coatings on tools made of polycrystalline cubic boron nitride (PCBN), taking into account the thermal and structural components that arise during their formation. The stress values in a TiNbN coating were calculated using experimental data on the deformation of a model specimen—a thin steel plate—and the structural and thermally induced components of residual stress in the coating were identified. A functional relationship was found between the specimen deflection, coating deposition temperature, Young’s modulus, and residual stress in the coating. Using data obtained from model specimens, the residual stress was determined in a coating applied to a PCBN substrate of the Borsinit tool. The absolute values of the total residual stress significantly increased with coating thickness from 1 to 2.5 µm, reaching 1.9 GPa. The results demonstrate that the residual stress remains within safe limits regarding the potential cohesive failure of the coating.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 4","pages":"281 - 287"},"PeriodicalIF":1.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990591","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

Performance Characteristics of Grinding Tools from Diamond Grinding Powders after Floatation Separation 金刚石磨粉浮选分离后磨具的性能特征

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040069

V. I. Lavrinenko, V. V. Smokvyna, H. D. Ilnytska, N. O. Oliinyk, G. A. Bazaliy, V. Yu. Solod

{"title":"Performance Characteristics of Grinding Tools from Diamond Grinding Powders after Floatation Separation","authors":"V. I. Lavrinenko, V. V. Smokvyna, H. D. Ilnytska, N. O. Oliinyk, G. A. Bazaliy, V. Yu. Solod","doi":"10.3103/S1063457625040069","DOIUrl":"10.3103/S1063457625040069","url":null,"abstract":"The floatation separation of diamond powders, where some grains of synthetic diamond grinding powder were carried to the surface layer (“foam” product) with air bubbles, and the others diamond grains remained in the chamber of the floatation machine to be better wetted with water (“chamber” product), has been studied. It has been shown that the “foam” product diamonds, in contrast to the original and “chamber” powders, have a higher strength of grains and are more homogeneous in strength at the lowest mass content of impurities and minimum specific magnetic susceptibility. To increase the wear resistance of a diamond wheel, the most efficient is to use just the “foam” product and, notably, such efficiency grows with an increase in the machining rate. It has been revealed that the application of a tool with diamond powders after floatation separation (“foam” and “chamber” products) makes it possible to attain a lower value for the roughness parameter Ra as compared to the tools with original diamond powders. At the same time, the fullness of the ground rough surface according to such a bearing surface profile parameter as t50 indicates that this parameter for different variants of applying the tools with diamond powders after floatation sorting is higher than for the tools with powders in the initial state.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 4","pages":"324 - 329"},"PeriodicalIF":1.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990404","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 Isotopic Composition, Crystal Size, Intergranular Boundary Thermal Resistance, and Temperature on the Thermal Conductivity of Diamond Nanopolycrystals and Nanocomposites 同位素组成、晶粒尺寸、晶间边界热阻和温度对金刚石纳米多晶和纳米复合材料导热性能的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040057

V. І. Kushch, O. P. Podoba, S. V. Shmegera, O. O. Bochecka

{"title":"Effect of Isotopic Composition, Crystal Size, Intergranular Boundary Thermal Resistance, and Temperature on the Thermal Conductivity of Diamond Nanopolycrystals and Nanocomposites","authors":"V. І. Kushch, O. P. Podoba, S. V. Shmegera, O. O. Bochecka","doi":"10.3103/S1063457625040057","DOIUrl":"10.3103/S1063457625040057","url":null,"abstract":"This study presents a review and comparative analysis of existing approaches, methodologies, and findings related to the thermal conductivity of nanostructured solids. The authors developed theoretical models to predict the effective thermal conductivity of nanopolycrystals and nanocomposites with imperfect grain boundaries, incorporating the effects of isotopic composition, crystal size, interfacial thermal resistance, and temperature. These models rely on the current understanding of the physical mechanisms of lattice heat transfer in covalent crystals and phonon scattering at structural defects. The developed theory offers a straightforward method for estimating the thermal conductivity of nanocomposites and provides insight into the dominant factors governing heat transfer in crystalline structures at the nanoscale. Comparison with experimental data confirms the model’s validity and its applicability to the prediction of thermal conductivity in real-world nanopolycrystalline and nanocomposite materials, including those containing diamond.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 4","pages":"249 - 260"},"PeriodicalIF":1.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990592","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

Polishing Techniques for Optical Components of Glass, Semiconductors, and Copper 玻璃、半导体和铜光学元件的抛光技术

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040033

Yu. D. Filatov, T. O. Prikhna, A. Yu. Boyarintsev, V. I. Sidorko, S. V. Kovalev, I. A. Rybalka

{"title":"Polishing Techniques for Optical Components of Glass, Semiconductors, and Copper","authors":"Yu. D. Filatov, T. O. Prikhna, A. Yu. Boyarintsev, V. I. Sidorko, S. V. Kovalev, I. A. Rybalka","doi":"10.3103/S1063457625040033","DOIUrl":"10.3103/S1063457625040033","url":null,"abstract":"The study of the mechanisms governing material removal and nanoprofile formation on polished surfaces during the polishing of optical components made of glass, semiconductors, and copper using dispersed systems composed of micro- and nanopowders reveals that the generation of slurry nanoparticles, resulting from energy transfer from abrasive particles to the processed surface, proceeds via the Förster resonance energy transfer (FRET) mechanism in the case of glass, or quantum dot-mediated FRET (QD-FRET) in the case of semiconductors and copper. Quantum dots form on these surfaces during polishing. The material removal rate decreases with increasing bonding energy in glass or with the effective bandgap width of semiconductor or copper oxide quantum dots that form on the surface. The relationship between the energy of slurry nanoparticles and their most probable size follows a linear function for K8 glass and polymethyl methacrylate (PMMA), and a parabolic function for germanium, indium antimonide, and copper. The material removal rate during the polishing of optical components made of K8 glass, PMMA, germanium, indium antimonide, and copper increases linearly with the quality factor of the microresonator and the excited-state lifetime of clusters or quantum dots on the treated surface, in accordance with general polishing trends. Surface roughness parameters Ra, Rq, Rmax, and Rz, together with the material removal rate, serve as effective criteria for evaluating polishing efficiency. Theoretical predictions of the material removal rate demonstrate good agreement with experimental measurements of polishing performance for glass, semiconductor crystals, and copper, with deviations ranging from 2 to 5%.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 4","pages":"300 - 310"},"PeriodicalIF":1.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990593","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

Computer Simulation of the Effect of High-Speed Pressure Sintering Parameters on the Densification and Grain Growth of Boron Carbide-Based Material 高速加压烧结参数对碳化硼基材料致密化和晶粒生长影响的计算机模拟

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040021

V. A. Dutka, A. L. Maystrenko, V. M. Kolodnitskyi

{"title":"Computer Simulation of the Effect of High-Speed Pressure Sintering Parameters on the Densification and Grain Growth of Boron Carbide-Based Material","authors":"V. A. Dutka, A. L. Maystrenko, V. M. Kolodnitskyi","doi":"10.3103/S1063457625040021","DOIUrl":"10.3103/S1063457625040021","url":null,"abstract":"This study presents a computational investigation into the effects of high-temperature dwell time, sintering temperature, and applied pressure on the densification kinetics and grain growth of micrometer-scale boron carbide–based powder mixtures during high-speed pressure-assisted sintering (HSPAS) at pressures ranging from 250 to 1200 MPa. The simulations employed numerical models of electric heating and densification. The densification model relies on the Skorokhod–Olevsky–Stern theory of sintering for porous materials and incorporates grain growth kinetics throughout the sintering process. The results demonstrate that by adjusting the sintering temperature, dwell time, and pressure during HSPAS, one can control the densification behavior and grain evolution. Specifically, appropriate parameter selection shortens the time required for complete densification, significantly suppresses grain growth, and yields a dense microstructure in the sintered sample. At lower-temperature HSPAS conditions, increasing pressure from 250 to 1200 MPa markedly enhances the densification rate and reduces the time for full densification by a factor of 2 to 3. Notably, by optimizing the heating rate and pressure during HSPAS, the densification time can be reduced by two to three times compared to spark plasma sintering under pressures up to 100 MPa, while simultaneously preventing grain growth.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 4","pages":"270 - 280"},"PeriodicalIF":1.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144990587","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

Body Center Tetragonal Pseudo-Diamond C20: Crystal Chemistry and First Principles Investigations of Physical Properties 体心四边形伪金刚石C20：晶体化学和物理性质的第一性原理研究

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-09-04 DOI: 10.3103/S1063457625040070

Samir F. Matar

引用次数: 0