Publication detail
Why freeze-casting brings different phase composition of calcium phosphates?
PEJCHALOVÁ, L. ROLEČEK, J. SALAMON, D.
Original Title
Why freeze-casting brings different phase composition of calcium phosphates?
Type
journal article in Scopus
Language
English
Original Abstract
The impact of freeze-casting on the porosity, pore distribution, and phase composition was studied and compared with conventional shaping techniques. A bimodal pore size distribution was observed in freeze-cast + freeze-dried samples, in contrast to the unimodal one in freeze-cast + air-dried and conventionally prepared samples. The densification of freeze-cast + freeze-dried samples started at about 50 °C higher than their conventional counterparts (~870 °C vs. 920 °C). Diffusion seems to be a key parameter for the phase transformation of HAP into β-TCP during sintering. The residual HAP content in the sintered samples was influenced by used freezing rate and varied from 4% to 30% (unimodal samples), and from 7% to 16% (bimodal samples). Although further experiments must be carried out, our results showed that the freeze-casting parameters affect the resulting porosity and phase composition regardless of whether the freeze-drying or air-drying was used afterward.
Keywords
Ice-templating, Robocasting,Indirect 3D printing, Whitlockite, Hydroxyapatite
Authors
PEJCHALOVÁ, L.; ROLEČEK, J.; SALAMON, D.
Released
1. 9. 2021
Publisher
Elsevier
ISBN
2666-5395
Periodical
Open Ceramics
Year of study
7
Number
1
State
Kingdom of the Netherlands
Pages from
1595
Pages to
1602
Pages count
8
URL
Full text in the Digital Library
BibTex
@article{BUT176560,
author="Lucie {Mařáková} and Jakub {Roleček} and David {Salamon}",
title="Why freeze-casting brings different phase composition of calcium phosphates?",
journal="Open Ceramics",
year="2021",
volume="7",
number="1",
pages="1595--1602",
doi="10.1016/j.oceram.2021.100161",
issn="2666-5395",
url="https://www.sciencedirect.com/science/article/pii/S0955221918307246"
}