Journal of Superhard Materials最新文献_第9页

Effect of Cu–Sn–Ti Solder Alloy on Morphology, Bonding Interface, and Mechanical Properties of Brazed Diamond Grits Cu-Sn-Ti钎料合金对钎焊金刚石磨粒形貌、结合界面及力学性能的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-01-23 DOI: 10.3103/S106345762406011X

Jun Zhang, Kai Li, Zhe Zhang, Jiarong Chen, Peicheng Mo, Xiaoyi Pan, Qiaofan Hu, Chao Chen

{"title":"Effect of Cu–Sn–Ti Solder Alloy on Morphology, Bonding Interface, and Mechanical Properties of Brazed Diamond Grits","authors":"Jun Zhang, Kai Li, Zhe Zhang, Jiarong Chen, Peicheng Mo, Xiaoyi Pan, Qiaofan Hu, Chao Chen","doi":"10.3103/S106345762406011X","DOIUrl":"10.3103/S106345762406011X","url":null,"abstract":"The present study focused on characterizing Cu70–Sn20–Ti10 solder alloy powder used for brazing diamond grits in a vacuum at 960°C for 20 min. The study covered the macroscopic and microscopic morphology of Cu–Sn–Ti/diamond, the products and thickness of the interfacial reaction layer, the surface morphology of diamond grits, and the phase and morphology of surface attachments after reaction. Additionally, the effects of graphitization and compressive strength of the diamond after the reaction were also studied. The study’s results revealed that the solder alloy could climb up to the diamond grits effectively and exhibited excellent wettability. Microscopically, a TiC reaction layer was observed at the interface between them, and the thickness of the reaction layer was about 1.92 μm, leading to the realization of a chemical metallurgical combination. After brazing, the uncovered surface of diamond grits appeared smooth and did not show graphitization, except for slight graphitization in a few corrosion pits. Moreover, no significant change was observed in the compressive strength of the diamond before and after brazing.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 6","pages":"440 - 449"},"PeriodicalIF":1.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108929","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

Theoretical Evaluation of the Brittle Strength of cBN–TiN Two-Phase Ceramics cBN-TiN两相陶瓷脆性强度的理论评价

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-01-23 DOI: 10.3103/S1063457624060042

V. I. Kushch, A. S. Manohin, S. A. Klimenko

引用次数: 0

The Effect of Surface Condition of AlN–Mo Composite Bulk Absorbers on the Reduction of Microwave Radiation Reflection AlN-Mo复合体吸收体表面条件对微波辐射反射抑制的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-01-23 DOI: 10.3103/S1063457624060029

V. I. Chasnyk, D. V. Chasnyk, O. M. Kaidash, I. P. Fesenko, S. A. Kukharenko

引用次数: 0

Recent Developments in Diamond Processing and Surface Modification Techniques for Tailoring Properties of Diamond Grains: A Review 金刚石加工及其表面改性技术的研究进展

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-01-23 DOI: 10.3103/S1063457624060054

V. I. Lavrinenko

{"title":"Recent Developments in Diamond Processing and Surface Modification Techniques for Tailoring Properties of Diamond Grains: A Review","authors":"V. I. Lavrinenko","doi":"10.3103/S1063457624060054","DOIUrl":"10.3103/S1063457624060054","url":null,"abstract":"The paper reviews current advancements in diamond processing and dressing techniques, highlighting the specific methods of surface modification for diamond grains to alter their properties intentionally. It discusses the scientific principles underlying the development of plastic grinding processes for brittle materials and emphasizes the relationship among specific energy, diamond tool wear, and surface roughness. Laser rough dressing effectively removes excess abrasive layers rapidly, while precision electroerosion dressing enhances profile accuracy and restores the cutting ability of the grinding wheel. The positive effects of using porous, defective diamond grains are demonstrated. The development of diamond grains with high self-sharpening properties and improved bonding within the binding material is discussed. Furthermore, the paper establishes the effectiveness of adding B2O3, TiO2, and Al2O3 oxides to modify the surface of diamond grains, protecting against oxidation. It notes the beneficial impact of multilayer coatings containing cubic boron nitride (cBN). The addition of B4C and V2O5 improves the retention of diamond grains in diamond-containing composites.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 6","pages":"462 - 481"},"PeriodicalIF":1.2,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108833","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

Melting Temperatures of (Super)Hard Cubic Boron Pnictides 超）硬立方氮化硼的熔化温度

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-10-27 DOI: 10.3103/S1063457624050095

V. L. Solozhenko

引用次数: 0

Electrodynamic Properties of AlN–C and AlN–C–Mo Composites Produced by Pressureless Sintering 无压烧结法制备的 AlN-C 和 AlN-C-Mo 复合材料的电动特性

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-10-27 DOI: 10.3103/S1063457624050083

T. B. Serbeniuk, T. O. Prikhna, V. V. Zagorodnii, V. B. Sverdun, V. V. Oliynyk, M. V. Karpets, V. E. Moshchil, S. S. Ponomaryov

引用次数: 0

Modeling the Densification of Boron Carbide Based Ceramic Materials under Flash Pressure Sintering 碳化硼基陶瓷材料在闪压烧结下的致密化建模

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-10-27 DOI: 10.3103/S1063457624050022

V. A. Dutka, A. L. Maystrenko, V. G. Kulych, O. I. Borymskyi

引用次数: 0

Original Orthorhombic Tetrahedral-Trigonal Hybrid Allotropes Cn (n = 8, 10, 12, 14) with Ethene–Like and Propadiene–Like Units: Crystal Engineering and Quantum Mechanical Calculations 具有类乙烯和类丙二烯单元的原始正四面体-三方混合异构体 Cn（n = 8、10、12、14）：晶体工程和量子力学计算

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-10-27 DOI: 10.3103/S106345762405006X

Samir F. Matar

{"title":"Original Orthorhombic Tetrahedral-Trigonal Hybrid Allotropes Cn (n = 8, 10, 12, 14) with Ethene–Like and Propadiene–Like Units: Crystal Engineering and Quantum Mechanical Calculations","authors":"Samir F. Matar","doi":"10.3103/S106345762405006X","DOIUrl":"10.3103/S106345762405006X","url":null,"abstract":"Original carbon allotropes, orthorhombic C8, C10, C12 and C14 presenting mixed sp2/sp3 carbon hybridizations with C=C ethene-like and C=C=C propadiene-like embedded units are proposed from crystal engineering and calculations within the framework of the quantum density functional theory DFT. The carbon allotropes with topologies related with jeb, mog, as well as new topologies, show alternating tetrahedral and trigonal carbon stackings along the a-orthorhombic direction (vertical) close to but different from “isoglitter”. The carbon allotropes (C8, C10, C12, C14) were shown to be cohesive and stable both mechanically (elastic properties) and dynamically (phonons), with calculated Vickers hardness (HV) magnitudes ranging between 25 and 52 GPa, the latter magnitude assigned to C12 possessing the largest number of tetrahedral versus trigonal stackings. High phonon frequencies ω ∼ 50 THz were attributed to stretching mode of C=C (in C8 and C12) and C=C=C (in C10 and C14) units with good agreement with experiment for Raman molecular identifications. Observed magnitudes of ω ∼ 40 THz were proposed as signatures of C–C simple bonds in the tetrahedra as in diamond. The electronic band structure and electronic density of states DOS shown exemplarily for C8 point to metallic-like behavior assigned mainly to the itinerant role of trigonal carbon π-electrons.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 5","pages":"333 - 343"},"PeriodicalIF":1.2,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518826","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

Technological and Innovative Features of the Electroconsolidation Method as a Kind of Plasma Sintering for Refractory Compounds 作为一种难熔化合物等离子烧结法的电固结法的技术和创新特点

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-10-27 DOI: 10.3103/S1063457624050046

E. S. Hevorkian, V. P. Nerubatskyi, V. O. Chyshkala, S. V. Lytovchenko, M. M. Prokopiv, W. Samociuk, V. A. Mechnik

引用次数: 0

Effect of Sintering Parameters and Liquid Phase Content on the Properties of Fe-Rich Based Impregnated Diamond Bit Matrix 烧结参数和液相含量对富铁基浸渍金刚石钻头基体性能的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2024-10-27 DOI: 10.3103/S1063457624050101

Zhiming Wang, Xiecai Yan, Yakun Tao, Wucheng Sun, Xiaohong Fang, Longchen Duan, Songcheng Tan

{"title":"Effect of Sintering Parameters and Liquid Phase Content on the Properties of Fe-Rich Based Impregnated Diamond Bit Matrix","authors":"Zhiming Wang, Xiecai Yan, Yakun Tao, Wucheng Sun, Xiaohong Fang, Longchen Duan, Songcheng Tan","doi":"10.3103/S1063457624050101","DOIUrl":"10.3103/S1063457624050101","url":null,"abstract":"The effects of sintering parameters and liquid phase content on the properties of Fe-rich based pre-alloyed impregnated diamond bit (IDB) matrix were investigated using orthogonal experimental design. Based on the analysis of the results, it was found that sintering temperature and liquid phase content have significant effects on the bending strength, hardness, relative density, and wear rate of the matrix. For metal matrix composite (MMC), as the sintering temperature increased from 900 to 1050°C, the bending strength, hardness (HRB), and relative density of the MMC decreased first, then increased, and finally decreased again, while the wear rate increased with temperature. With increasing liquid phase content, the four properties of the MMC showed a similar trend of increasing first and then decreasing. Comparatively, the effects of holding time and sintering pressure on the properties of the matrices were smaller than those of sintering temperature and liquid phase content, but they also had significant effects on some properties of the matrices. Holding time had a more significant effect on hardness and wear resistance, while sintering pressure only had a significant effect on hardness. After adding diamonds, the bending strength of diamond matrix composite increased first and then decreased with increasing temperature, while the bending strength continued to decrease with the increase of liquid phase content. This study provides a feasible method for studying the effects of various sintering parameters and liquid phase content on the properties of Fe-rich pre-alloyed IDB matrix, which is helpful for optimizing the preparation process of drill bits.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"46 5","pages":"376 - 389"},"PeriodicalIF":1.2,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518827","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