Fabrication of fine-grained yttria-stabilized tetragonal zirconia polycrystals from polycrystalline beads

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Auechalitanukul C., Cannon W.R.

ผู้เผยแพร่: Hindawi

ปีที่เผยแพร่ (ค.ศ.): 2009

Volume number: 2

หน้าแรก: 962

หน้าสุดท้าย: 967

จำนวนหน้า: 6

ISBN: 9781615674237

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77950837293&partnerID=40&md5=79cc2fbf8c5c82ed49179df2d8ad1f7b

ภาษา: English-Great Britain (EN-GB)

บทคัดย่อ

This research sought to study the fabrication of fine-grained polycrystalline beads of yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) as a result of particle creep during hot pressing. The effect of the mean particle size on the densification during hot pressing in the absence of a contribution from surface energy was investigated. Spherical polycrystalline beads were prepared by pre-sintering of spray-dried granules of 3Y-TZP at 1400°C for 2 hours. Three size fractions of polycrystalline beads, nominally 25, 45 and 75 μm, were hot-pressed at 1350°C for 1 hour using pressures of 6, 10, 20 and 40 MPa. It was found that a nearly dense (>98%) 3Y-TZP monolith could be produced at 40 MPa, while the fine grain size (0.3 μm) of the starting polycrystalline beads was retained. It was found there was no particle size dependence on the hot-pressing densification rate for a particle size range of 20 to 100 μm.

คำสำคัญ

Creep, Hot pressing, Polycrystalline particles, Zirconia ceramics