Details
| Original language | English |
|---|---|
| Article number | 2401436 |
| Journal | Advanced engineering materials |
| Volume | 26 |
| Issue number | 22 |
| Publication status | Published - 20 Nov 2024 |
Abstract
Many metallic implant materials, such as Ti–6Al–4V, contain elements that are now considered to be critical and have high Young's modulus compared to the human bone, leading to stress shielding. Nb–1Zr alloys, which are free of toxic elements and feature Young's modulus closer to human bone, present a promising alternative. The present study investigates the co-extrusion of a biocompatible Nb–1Zr powder for potential use in dental implants. A process chain to coextrude Nb–1Zr powder into a solid body was developed, focusing on eliminating core fractures and reducing void fraction. Experimental parameters, including die angle, preheating temperature, and extrusion ratio, were optimized to achieve a continuous Nb–1Zr core. Metallographic analysis and mechanical testing reveal that profiles extruded at 1275 °C exhibit the most favorable properties, with a minimal void fraction of 0.003%, good compressive strength of 457 MPa, and microhardness of 180 HV 1. Controlled oxidation of the powder further enhances hardness to 501 HV 1, achieving values similar to Ti–6Al–4V. The findings demonstrate the feasibility of producing high-strength, biocompatible Nb–1Zr profiles through optimized co-extrusion processes.
Keywords
- co-extrusion, implant material, microstructure, niobium, Vickers hardness, zirconium
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Advanced engineering materials, Vol. 26, No. 22, 2401436, 20.11.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Co-extrusion of Nb–1Zr Powder for the Production of a Biocompatible High-Strength Material for Dental Implants
AU - Schleich, Julian Tobias
AU - Hahn, Luise
AU - Pott, Philipp Cornelius
AU - Maier, Hans Jürgen
AU - Klose, Christian
N1 - Publisher Copyright: © 2024 The Author(s). Advanced Engineering Materials published by Wiley-VCH GmbH.
PY - 2024/11/20
Y1 - 2024/11/20
N2 - Many metallic implant materials, such as Ti–6Al–4V, contain elements that are now considered to be critical and have high Young's modulus compared to the human bone, leading to stress shielding. Nb–1Zr alloys, which are free of toxic elements and feature Young's modulus closer to human bone, present a promising alternative. The present study investigates the co-extrusion of a biocompatible Nb–1Zr powder for potential use in dental implants. A process chain to coextrude Nb–1Zr powder into a solid body was developed, focusing on eliminating core fractures and reducing void fraction. Experimental parameters, including die angle, preheating temperature, and extrusion ratio, were optimized to achieve a continuous Nb–1Zr core. Metallographic analysis and mechanical testing reveal that profiles extruded at 1275 °C exhibit the most favorable properties, with a minimal void fraction of 0.003%, good compressive strength of 457 MPa, and microhardness of 180 HV 1. Controlled oxidation of the powder further enhances hardness to 501 HV 1, achieving values similar to Ti–6Al–4V. The findings demonstrate the feasibility of producing high-strength, biocompatible Nb–1Zr profiles through optimized co-extrusion processes.
AB - Many metallic implant materials, such as Ti–6Al–4V, contain elements that are now considered to be critical and have high Young's modulus compared to the human bone, leading to stress shielding. Nb–1Zr alloys, which are free of toxic elements and feature Young's modulus closer to human bone, present a promising alternative. The present study investigates the co-extrusion of a biocompatible Nb–1Zr powder for potential use in dental implants. A process chain to coextrude Nb–1Zr powder into a solid body was developed, focusing on eliminating core fractures and reducing void fraction. Experimental parameters, including die angle, preheating temperature, and extrusion ratio, were optimized to achieve a continuous Nb–1Zr core. Metallographic analysis and mechanical testing reveal that profiles extruded at 1275 °C exhibit the most favorable properties, with a minimal void fraction of 0.003%, good compressive strength of 457 MPa, and microhardness of 180 HV 1. Controlled oxidation of the powder further enhances hardness to 501 HV 1, achieving values similar to Ti–6Al–4V. The findings demonstrate the feasibility of producing high-strength, biocompatible Nb–1Zr profiles through optimized co-extrusion processes.
KW - co-extrusion
KW - implant material
KW - microstructure
KW - niobium
KW - Vickers hardness
KW - zirconium
UR - http://www.scopus.com/inward/record.url?scp=85203599079&partnerID=8YFLogxK
U2 - 10.1002/adem.202401436
DO - 10.1002/adem.202401436
M3 - Article
AN - SCOPUS:85203599079
VL - 26
JO - Advanced engineering materials
JF - Advanced engineering materials
SN - 1438-1656
IS - 22
M1 - 2401436
ER -