Journal of Superhard Materials最新文献_第2页

Automated Identification of the 3D-Shape of Grains for High-Strength Grinding Powders of Synthetic Diamond 合成金刚石高强度磨粉颗粒三维形状的自动识别

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030086

G. A. Petasyuk, O. O. Bochechka

{"title":"Automated Identification of the 3D-Shape of Grains for High-Strength Grinding Powders of Synthetic Diamond","authors":"G. A. Petasyuk, O. O. Bochechka","doi":"10.3103/S1063457625030086","DOIUrl":"10.3103/S1063457625030086","url":null,"abstract":"Particular significance in the problems of the indirect analytical estimation of technological properties for grinding powders from synthetic diamond is substantiated for the spatial shape of grains. Referring to literature sources, it is pointed out that the actual 3D grain shape of such grinding powders, being used immediately instead of their 3D model, provides more reliable information about the values of technological properties. The creation of methodical tools for the automated 3D shape identification of a large-volume sample (up to 2000 grains) from such abrasive powders is emphasized to be of applied importance. An original method of solving such a problem for high-strength abrasive powders of synthetic diamond is proposed. The method is based on the known fact that grains of such powders are crystals with a 3D shape close to octahedra, cubooctahedra, and truncated octahedra. Some analytical and graphic information about the shape of an orthographic parallel projection of these spatial bodies is given depending on the 2D shape of the face, on which they are located. An analytical relationship between the geometric projection parameters required for the automatic identification of both the 2D shape of this projection and the 3D shape of grains and the generative parameters of an octahedron, cubooctahedron, and a truncated octahedron is derived. Some analogues to the morphometric characteristics of abrasive powders diagnosed by contemporary computer and technical tools with grains identical to the considered spatial bodies by their 3D shape are updated. The practical application of the developed methodical tools is illustrated by using high-strength abrasive powders AS250–AS500 from synthetic diamond as an example. It has been established that the relative content of grains shaped other than octahedra, cubooctahedra, and truncated octahedra is less than 31%.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 3","pages":"234 - 245"},"PeriodicalIF":1.2,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144326","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

Impact of Nanomontmorillonite on the Properties of Vitrified Bonded Diamond Grinding Wheels 纳米蒙脱土对玻璃化结合剂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 : 2025-07-20 DOI: 10.3103/S1063457625030098

Jinyu Shang, Ruien Yu, Boheng Zhu, Wenjie Gong, Zhicong Tian, Kenan Li, Qingchun Ma, Xijing Zhu

引用次数: 0

Structure and Surface Area of Aluminum Nitride Particles under Milling 铣削作用下氮化铝颗粒的结构和表面积

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030074

V. I. Omelianenko, I. P. Fesenko, O. M. Kaidash, Yu. M. Tuz, A. V. Dovhal, S. A. Kukharenko, V. I. Chasnyk, G. S. Oleǐnik, H. P. Zakharchuk

引用次数: 0

Recent Advances in Diamond-Abrasive Machining of Hard and Brittle Materials (Review) 硬脆材料金刚石磨料加工研究进展（综述）

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030049

V. I. Lavrinenko

{"title":"Recent Advances in Diamond-Abrasive Machining of Hard and Brittle Materials (Review)","authors":"V. I. Lavrinenko","doi":"10.3103/S1063457625030049","DOIUrl":"10.3103/S1063457625030049","url":null,"abstract":"This article examines state-of-the-art research on diamond-abrasive machining of hard and brittle materials, with a focus on reproducing machining conditions at microscopic scales using high-resolution instruments. The discussion emphasizes the increasing utilization of porous, rough-surfaced, and nanotwinned (nt-D) diamonds. A new type of diamond with a rough surface, synthesized via thermochemical corrosion, exhibits a larger surface area and greater electronegativity than conventional diamond. These characteristics enhance interfacial adhesion between the binder and the diamond. Molecular dynamics simulations demonstrate their effectiveness in analyzing the mechanisms of abrasive processes such as nanocutting, grinding, and polishing. The findings identify critical grinding depth, vibration amplitude, and cutting speed as key machining parameters that determine the transition of diamond-abrasive machining of hard and brittle materials into a plastic regime. Recent publications recognize chemical–mechanical polishing as an efficient method for processing materials such as silicon carbide, monocrystalline silicon, nanotwinned diamond, and boron-doped diamonds [1].","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 3","pages":"214 - 221"},"PeriodicalIF":1.2,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144375","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

Thermal Conductivity of WC–20% Co and WC–20% Ni Alloys with Mesostructure WC-20% Co和WC-20% Ni细观结构合金的导热性能

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030062

O. O. Matviichuk, V. Z. Turkevych, Ye. F. Kuz’menko, I. O. Hnatenko

引用次数: 0

Effect of Grain Boundaries on the Elasticity and Thermal Conductivity of Polycrystalline Cubic Boron Nitride 晶界对多晶立方氮化硼弹性和导热性的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030037

V. I. Kushch, I. A. Petrusha, V. Z. Turkevych

引用次数: 0

Effect of Titanium Coating Modification of Diamond Powder Grains on the Formation of a Polycrystalline Composite under High Pressure and High Temperature 金刚石粉末颗粒的钛涂层改性对高压高温下形成多晶复合材料的影响

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030104

V. O. Vienikov, O. O. Bochechka, O. I. Chernienko, O. S. Osipov, V. V. Bilorusets, A. O. Liamtseva, Yu. O. Melniychuk

引用次数: 0

High-Density Ultrahard Novel Orthorhombic Carbon Allotropes C12 and C16 with Physical Properties Close to Diamond: Structural and DFT Investigations 具有接近金刚石物理性质的高密度超硬新型正交碳同素异形体C12和C16：结构和DFT研究

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030050

Samir F. Matar

{"title":"High-Density Ultrahard Novel Orthorhombic Carbon Allotropes C12 and C16 with Physical Properties Close to Diamond: Structural and DFT Investigations","authors":"Samir F. Matar","doi":"10.3103/S1063457625030050","DOIUrl":"10.3103/S1063457625030050","url":null,"abstract":"Novel orthorhombic carbon allotropes with original topologies: 44T39 C12, mog-C12 and cbs-C16 were devised from crystal structure rationale of C4 tetrahedra stacking and connections backed by density functional theory DFT-based calculations of ground state structures and energy derived physical properties. Specifically, the structures were identified with distorted C4 tetrahedra versus perfect tetrahedra characterizing diamond, accompanied by small atom-averaged volumes resulting into high densities and subsequent ultra hard mechanical behaviors. Dynamically, the allotropes were found stable with positive frequencies revealed from their phonons represented in band structures. Pertaining thermodynamic properties showed specific heat CV = f(T) calculated curves close to diamond’s experimental values from literature. The closest agreement with experiment was found for the most cohesive allotrope in the series, cbs-C16, concomitantly with the largest electronic indirect band gap, like diamond. From the investigation, a holistic interrelationship: “crystal structure ↔ mechanical ↔ dynamic ↔ electronic properties” is deducted for carbon materials.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"47 3","pages":"184 - 192"},"PeriodicalIF":1.2,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144379","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

Structure and Mechanical Properties of Thick Vacuum TiC Condensates Obtained by Electron Beam Evaporation 电子束蒸发制备厚真空TiC凝聚体的结构和力学性能

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-07-20 DOI: 10.3103/S1063457625030025

V. G. Grechanyuk, O. V. Matsenko, A. V. Kozyrev, І. M. Grechanyuk, V. O. Shapovalov

引用次数: 0

Diamond Grinding of Ceramic Balls at Varied Geometric Parameters of the Process 不同几何参数下陶瓷球的金刚石磨削工艺

IF 1.2 4区材料科学

Journal of Superhard Materials Pub Date : 2025-05-26 DOI: 10.3103/S106345762502008X

S. V. Sokhan’, V. V. Voznyy, V. H. Sorochenko, O. A. Mykyshchenko

引用次数: 0