Evolution of pore structures with increasing milling time in the preparation of scaffolds of the Ti-13Nb-13Zr alloy by space holder technique (2018)
- Authors:
- USP affiliated authors: RODRIGUES JUNIOR, DURVAL - EEL ; KOMORIZONO, AMANDA AKEMY - EEL ; PINTO, PÉRSIO MOZART - EEL
- Unidade: EEL
- DOI: 10.13140/RG.2.2.16266.39364
- Assunto: BIOMATERIAIS
- Keywords: titanium alloys; structure characterization
- Language: Inglês
- Abstract: Metallic biomaterials have been applied in bone recovery due to their mechanic properties, that allow them to carry out the bone structural function during the bone recovery. However, Young’s modulus of metallic biomaterials are higher than those found for bones (between 0.1 and 30 GPa). This generates mechanical mismatch that lead to death of bone cells, bone reabsorption and implant loosening. The Ti-13Nb-13Zr (weigth%) alloy was the first to be developed, in the end of the 1990’s, with Young’s modulus between 60 and 80 GPa, closer to the values found for bones, among metallic biomaterials currently used. However, as other metallic biomaterials, the Ti-13Nb-13Zr alloy has higher Young’s modulus compared to those found for bones. To overcome this restraint, porous Ti alloys has been developed due to the possibility to adjust their relative density, and consequently their mechanical properties. Therefore, in this work it was decided to prepare scaffolds of Ti-13Nb-13Zr by space-holder technique. It was used naphthalene as space-holder to control porosity. High energy milling with a process controller was used for chemical homogenization, particle size reduction and uniformization of the Ti-13Nb-13Zr alloy (wt.%), and control the micromechanisms of welding, fracture and re-welding of the particles. After the powders were obtained under various milling times, the samples were mixed with the naphthalene to control the porosity, followed by pressing and sintering. After the scaffolds were obtained, Archimedes, helium picnometry, and microhardness tests were performed, and the samples were characterized by X-ray diffractometry (XRD) and scanning electron microscopy with coupled EDS (SEM + EDS). Analyzing the tests and characterizations of the samples, it was concluded that it was possible to control the porosity in samples without milling and milled for 1, 2 and 4 hours.The sample milled for 8 hours showed porosity below the expected one, and it was the only one that did not present unreacted niobium particles. The sample without milling presented the highest amount of large pores, followed by the sample milled for 8 hours. The other samples presented smaller pores, but well distributed. All the samples obtained by the milled powders presented tungsten, which is an impurity of the tungsten carbide milling media. Although the milled samples presented better homogeneity and distribution of the alloy elements, more studies are needed to minimize or avoid contamination by the milling process, and to optimize the powder metallurgy process to control the porosity in samples produced by milled powders.
- Imprenta:
- Publisher: Metallum Congressos
- Publisher place: Foz do Iguaçu-PR
- Date published: 2018
- Source:
- Título: 23º Congresso Brasileiro de Engenharia e Ciência dos Materiais (CBECIMAT 2018)
- Volume/Número/Paginação/Ano: p.1-1, 2018
- Este periódico é de acesso aberto
- Este artigo NÃO é de acesso aberto
-
ABNT
PINTO, Pérsio Mozart e KOMORIZONO, Amanda Akemy e RODRIGUES JR., Durval. Evolution of pore structures with increasing milling time in the preparation of scaffolds of the Ti-13Nb-13Zr alloy by space holder technique. 2018, Anais.. Foz do Iguaçu-PR: Metallum Congressos, 2018. p. 1-1. Disponível em: https://doi.org/10.13140/RG.2.2.16266.39364. Acesso em: 26 jan. 2026. -
APA
Pinto, P. M., Komorizono, A. A., & Rodrigues Jr., D. (2018). Evolution of pore structures with increasing milling time in the preparation of scaffolds of the Ti-13Nb-13Zr alloy by space holder technique. In 23º Congresso Brasileiro de Engenharia e Ciência dos Materiais (CBECIMAT 2018) (p. 1-1). Foz do Iguaçu-PR: Metallum Congressos. doi:10.13140/RG.2.2.16266.39364 -
NLM
Pinto PM, Komorizono AA, Rodrigues Jr. D. Evolution of pore structures with increasing milling time in the preparation of scaffolds of the Ti-13Nb-13Zr alloy by space holder technique [Internet]. 23º Congresso Brasileiro de Engenharia e Ciência dos Materiais (CBECIMAT 2018). 2018 ;1-1.[citado 2026 jan. 26 ] Available from: https://doi.org/10.13140/RG.2.2.16266.39364 -
Vancouver
Pinto PM, Komorizono AA, Rodrigues Jr. D. Evolution of pore structures with increasing milling time in the preparation of scaffolds of the Ti-13Nb-13Zr alloy by space holder technique [Internet]. 23º Congresso Brasileiro de Engenharia e Ciência dos Materiais (CBECIMAT 2018). 2018 ;1-1.[citado 2026 jan. 26 ] Available from: https://doi.org/10.13140/RG.2.2.16266.39364 - Analysis of the milling time in the porosity and microstructure of scaffolds of the Ti-13Nb-13Zr alloy
- Optimization of powder metallurgy parameters to obtain scaffolds of Ti-13Nb-13Zr alloy with appropriate Young Modulus
- Evaluaton of Ways to Control Impurities Incorporated to the Powder of Ti-13Nb-13Zr by the Milling During the Process of High Energy Ball Milling
- Obtenção de ligas Mg-Zn utilizando moagem de alta energia para aplicações biomédicas
- Obtaining Mg-Zn alloys using high energy grinding for biomedical applications
- Porosity Control in Ti-13Nb-13Zr Alloy for Biomedical Applications
- Development of multifilamentary superconducting wire of magnesium diboride with addition of a carbon source
- Use of high energy milling and porosity insertion in the development of the Mg-Zn system aiming biomedical applications
- Obtaining of Ti-13Nb-13Zr powder from chips of the alloy using HDH process
- Study of the powder metallurgy technique to obtain magnesium alloys
Informações sobre o DOI: 10.13140/RG.2.2.16266.39364 (Fonte: oaDOI API)
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