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Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys
Porous NiTi alloys are widely applied in the field of medical implant materials due to their excellent properties. In this paper, porous NiTi alloys were prepared by non-aqueous gel-casting. The influence of solid loading on the process characteristics of slurries and the microstructure and mechanic...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738916/ https://www.ncbi.nlm.nih.gov/pubmed/36499892 http://dx.doi.org/10.3390/ma15238398 |
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author | Wang, Ze He, Zhiqiang Duan, Bohua Liu, Xinli Wang, Dezhi |
author_facet | Wang, Ze He, Zhiqiang Duan, Bohua Liu, Xinli Wang, Dezhi |
author_sort | Wang, Ze |
collection | PubMed |
description | Porous NiTi alloys are widely applied in the field of medical implant materials due to their excellent properties. In this paper, porous NiTi alloys were prepared by non-aqueous gel-casting. The influence of solid loading on the process characteristics of slurries and the microstructure and mechanical properties of sintered samples were investigated. The viscosity and the stability of slurry significantly increased with the growth of solid loading, and the slurry had better process characteristics in the solid loading range of 40–52 vol.%. Meanwhile, the porosity and average pore diameter of the sintered NiTi alloys decreased with a rise in the solid loading, while the compressive strength increased. Porous NiTi alloys with porosities of 43.3–48.6%, average pore sizes of 53–145 µm, and compressive strengths of 87–167 MPa were fabricated by gel-casting. These properties meet the requirements of cortical bone. The results suggest that the pore structure and mechanical properties of porous NiTi products produced by gel-casting can be adjusted by controlling the solid loading. |
format | Online Article Text |
id | pubmed-9738916 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-97389162022-12-11 Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys Wang, Ze He, Zhiqiang Duan, Bohua Liu, Xinli Wang, Dezhi Materials (Basel) Article Porous NiTi alloys are widely applied in the field of medical implant materials due to their excellent properties. In this paper, porous NiTi alloys were prepared by non-aqueous gel-casting. The influence of solid loading on the process characteristics of slurries and the microstructure and mechanical properties of sintered samples were investigated. The viscosity and the stability of slurry significantly increased with the growth of solid loading, and the slurry had better process characteristics in the solid loading range of 40–52 vol.%. Meanwhile, the porosity and average pore diameter of the sintered NiTi alloys decreased with a rise in the solid loading, while the compressive strength increased. Porous NiTi alloys with porosities of 43.3–48.6%, average pore sizes of 53–145 µm, and compressive strengths of 87–167 MPa were fabricated by gel-casting. These properties meet the requirements of cortical bone. The results suggest that the pore structure and mechanical properties of porous NiTi products produced by gel-casting can be adjusted by controlling the solid loading. MDPI 2022-11-25 /pmc/articles/PMC9738916/ /pubmed/36499892 http://dx.doi.org/10.3390/ma15238398 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Ze He, Zhiqiang Duan, Bohua Liu, Xinli Wang, Dezhi Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys |
title | Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys |
title_full | Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys |
title_fullStr | Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys |
title_full_unstemmed | Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys |
title_short | Influence of Solid Loading on the Gel-Casting of Porous NiTi Alloys |
title_sort | influence of solid loading on the gel-casting of porous niti alloys |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738916/ https://www.ncbi.nlm.nih.gov/pubmed/36499892 http://dx.doi.org/10.3390/ma15238398 |
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