Publication result 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?

English Title

Why freeze-casting brings different phase composition of calcium phosphates?

Type

Scopus Article

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.

English 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

Key words in English

Ice-templating, Robocasting,Indirect 3D printing, Whitlockite, Hydroxyapatite

Authors

PEJCHALOVÁ, L.; ROLEČEK, J.; SALAMON, D.

RIV year

2022

Released

01.09.2021

Publisher

Elsevier

ISBN

2666-5395

Periodical

Open Ceramics

Volume

7

Number

1

State

Republic of Italy

Pages from

1595

Pages to

1602

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S0955221918307246

Full text in the Digital Library

http://hdl.handle.net/11012/204047

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"
}

Documents

1-s2.0-S2666539521001073-main