Electron beam sintering of ceramics for additive manufacturing; Vacuum; Vol. 169

Electron beam sintering of ceramics for additive manufacturing; Vacuum; Vol. 169

Detalles Bibliográficos
Parent link:Vacuum
Vol. 169.— 2019.— [108933, 5 p.]
Autor Corporativo: Томский политехнический университет
Otros Autores: Klimov A. S. Aleksandr Sergeevich, Bakeev I. Yu. Iljya Yurjevich, Dvilis E. S. Edgar Sergeevich, Oks E. M. Efim Mikhaylovich, Zenin A. A. Aleksandr Aleksandrovich
Sumario:Title screen
We describe the results of electron-beam layer-by-layer sintering of a mixture of alumina powder and talc. An electron beam with high power density, generated by a forevacuum-pressure, plasma-cathode electron source, was used as heat source. A specific feature of the source is the option to generate an electron beam at pressure range 5–20?Pa. In this pressure range, a high density beam-plasma is formed in the electron beam transport region. Positive ions from this plasma neutralize the negative charge that the beam's electrons deposit to the surface of the target. Using an electron beam, the alumina/talc powder mixture was heated and sintering occurred at a temperature of 1350?°C. An additional layer of powder was subsequently poured onto the previous one and sintered in the same way. We formed an electron-beam-sintered 7-layer structure. We show that the porosity of the sintered layers depends on the layer number, with the least porous layers located in the upper part of the sample.
Режим доступа: по договору с организацией-держателем ресурса
Lenguaje:inglés
Publicado: 2019
Materias:
электронный ресурс
труды учёных ТПУ
спекание
электронные пучки
плазма
Acceso en línea:https://doi.org/10.1016/j.vacuum.2019.108933
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663649

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