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Исследование упругих модулей ПСТМ типа DBN, ПТНБ и гексанита-Р импульсным УЗ-методом
Elastic properties of polycrystalline superhard materials on a base of the dense modifications of boron nitride (DBN, PTNB, hexanit-R) were investigated by pulsed ultrasound method. A feature of DBN samples produced by solid phase transformation using a pyrolytic boron nitride as an initial materi...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Інститут надтвердих матеріалів ім. В.М. Бакуля НАН України
2010
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| Series: | Породоразрушающий и металлообрабатывающий инструмент – техника и технология его изготовления и применения |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/23415 |
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| Summary: | Elastic properties of polycrystalline superhard materials on a base of the dense modifications of
boron nitride (DBN, PTNB, hexanit-R) were investigated by pulsed ultrasound method. A feature of
DBN samples produced by solid phase transformation using a pyrolytic boron nitride as an initial material
is the anisotropy of the longitudinal velocity of ultrasonic wave propagation. The degree of anisotropy
varies from 0,25 to 1,69 % and always the velocity along the axial direction of the sample was
lower than along radial one, what is possible due to texture of the polycrystalline material. |
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