Using Diamond Grinding Powders with Combined Coatings on Diamond Grain Surfaces in Abrasive Tools

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Superhard Materials Pub Date : 2024-07-08 DOI:10.3103/S1063457624030067

V. I. Lavrinenko, V. G. Poltoratskyi, O. O. Pasichnyi, V. Yu. Solod

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Abstract

A technological process has been developed for forming coatings on the surface of diamond grains using two and three components: soluble boron oxide (B₂O₃) and insoluble aluminum oxide (Al₂O₃) or insoluble carbide (B₄C, SiC, TiC). To achieve guaranteed increases in the wear resistance of diamond wheels when grinding hard alloys, it is necessary to apply a coating of boron oxide and boron carbide (B₂O₃ + B₄C) to the surface of the diamond grains. The positive effect of such a coating on the surface of the diamond grains is more pronounced under increased force and heat loads in the grinding zone. The holding capacity of the processed rough surface in terms of the t50 support surface curve parameter is preferable when the surface of diamond grains in diamond powder wheels AS6 125/100 is coated with a mixture of B₂O₃ + B₄C. Thus, for diamond grains, considering both the wear resistance of diamond wheels and surface roughness parameters, it is recommended to use diamond grains with a surface coating of B₂O₃ + B₄C in wheels for grinding hard alloys.

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在金刚石磨具的金刚石磨粒表面使用带复合涂层的金刚石磨粉

摘要已开发出一种在金刚石晶粒表面形成涂层的技术工艺，使用两种和三种成分：可溶性氧化硼（B2O3）和不溶性氧化铝（Al2O3）或不溶性碳化物（B4C、SiC、TiC）。在磨削硬质合金时，为了保证提高金刚石砂轮的耐磨性，有必要在金刚石颗粒表面涂上一层氧化硼和碳化硼（B2O3 + B4C）。这种涂层对金刚石晶粒表面的积极作用在磨削区受力和热负荷增加的情况下更为明显。当金刚石粉末砂轮 AS6 125/100 中的金刚石颗粒表面涂有 B2O3 + B4C 混合物时，从 t50 支撑表面曲线参数来看，加工粗糙表面的保持能力更佳。因此，对于金刚石颗粒，考虑到金刚石砂轮的耐磨性和表面粗糙度参数，建议在磨削硬质合金的砂轮中使用表面涂层为 B2O3 + B4C 的金刚石颗粒。

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来源期刊

Journal of Superhard Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

66.70%

发文量

审稿时长

2 months

期刊介绍： Journal of Superhard Materials presents up-to-date results of basic and applied research on production, properties, and applications of superhard materials and related tools. It publishes the results of fundamental research on physicochemical processes of forming and growth of single-crystal, polycrystalline, and dispersed materials, diamond and diamond-like films; developments of methods for spontaneous and controlled synthesis of superhard materials and methods for static, explosive and epitaxial synthesis. The focus of the journal is large single crystals of synthetic diamonds; elite grinding powders and micron powders of synthetic diamonds and cubic boron nitride; polycrystalline and composite superhard materials based on diamond and cubic boron nitride; diamond and carbide tools for highly efficient metal-working, boring, stone-working, coal mining and geological exploration; articles of ceramic; polishing pastes for high-precision optics; precision lathes for diamond turning; technologies of precise machining of metals, glass, and ceramics. The journal covers all fundamental and technological aspects of synthesis, characterization, properties, devices and applications of these materials. The journal welcomes manuscripts from all countries in the English language.