动态法测量超硬材料多晶体弹性模量和振动衰减的特点

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Superhard Materials Pub Date : 2023-09-29 DOI:10.3103/S1063457623040032

L. M. Devin, M. P. Bezhenar, S. V. Rychev

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引用次数: 0

摘要

圆盘状试样中固有振荡的共振频率是作为试样弹性模量和尺寸的函数确定的。估算了试样紧固位置对立方氮化硼/金刚石多晶系列试样弹性模量测量精度和振荡衰减率的影响。根据金刚石粉末含量，所有考虑的烧结多晶变体可分为三组。这些多晶体组中的每一组的性质（弹性模量、振荡衰减率、声速、Q因子）都不同。

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Specific Features of Measuring the Elasticity Modulus and the Decrement of Oscillations in Superhard Material Polycrystals by the Dynamic Method

The resonant frequencies of natural oscillations in disk-shaped specimens are determined as a function of the elasticity modulus and dimensions of a specimen. The effect produced by the specimen fastening place on the precision of measuring the elasticity modulus and the decrement of oscillation in the series of cubic boron nitride/diamond polycrystal specimens are estimated. All the considered variants of sintered polycrystals can be classified into three groups depending on the diamond powder content. The properties (elasticity modulus, oscillation decrement, sound velocity, Q factor) are different for each of these groups of polycrystals.

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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.