Detail publikace

Grain growth during capsule-free hot isostatic pressing

SPUSTA, T. PRAJZLER, V. MACA, K.

Originální název

Grain growth during capsule-free hot isostatic pressing

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper provides a new insight to the capsule free hot isostatic pressing (HIP) of alumina and yttria-stabilized zirconia ceramics. The first part of the paper focuses on the pre-sintering stage, namely the impact of conventional (2, 5, 10 °C/min) and rapid heating rate (100 °C/min) on pore closure and grain growth. It is shown that the rapid heating neither changes the pore closure behavior nor restricts the grain growth compared to conventional pre-sintering. The second part investigates the influence of temperature, dwell time, and applied pressure on the microstructure development during HIP. Our findings indicate the existence of a kinetic window, providing the optimal HIP conditions (1200–1250 °C, 200 MPa, 1–4 h for investigated powders) for production of almost fully dense compacts with only minimal grain growth. Our results also show that the applied pressure (up to 200 MPa) does not facilitate the grain boundary mobility of the investigated materials even at a higher temperature (1300 °C) at which the grain growth normally occurs. The potential of optimized capsule-free HIP was demonstrated by preparation of a transparent c-YSZ sample by a combination of rapid pre-sintering and optimized post-HIP

Klíčová slova

Aluminum oxide; Grain boundaries; Grain growth; Hot isostatic pressing; Powders; Sintered alumina; Yttria stabilized zirconia; Yttrium oxide

Autoři

SPUSTA, T.; PRAJZLER, V.; MACA, K.

Vydáno

15. 9. 2022

ISSN

0272-8842

Periodikum

Ceramics International

Ročník

48

Číslo

18

Stát

Spojené království Velké Británie a Severního Irska

Strany od

25764

Strany do

25771

Strany počet

8

URL

https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S0272884222018260

BibTex

@article{BUT181634,
  author="Tomáš {Spusta} and Vladimír {Prajzler} and Karel {Maca}",
  title="Grain growth during capsule-free hot isostatic pressing",
  journal="Ceramics International",
  year="2022",
  volume="48",
  number="18",
  pages="25764--25771",
  doi="10.1016/j.ceramint.2022.05.248",
  issn="0272-8842",
  url="https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S0272884222018260"
}