Co-extrusion of internally oxidized Nb-1Zr: An avenue to new load-bearing implants

Julian-Tobias Schleich; Julius Max Jakob Siegmund; Minh Tien Phan; Philipp-Cornelius Pott; Hans Jürgen Maier; Christian Klose

doi:10.1016/j.mfglet.2026.02.003

Co-extrusion of internally oxidized Nb-1Zr: An avenue to new load-bearing implants

Julian-Tobias Schleich^*
, Julius Max Jakob Siegmund
, Minh Tien Phan
, Philipp-Cornelius Pott
, Hans Jürgen Maier
, Christian Klose

^*Korrespondierende*r Autor*in für diese Arbeit

Medizinische Hochschule Hannover (MHH)

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Abstract

Niobium-zirconium alloys like Nb-1Zr offer high biocompatibility and osteoconductivity, with a lower Young's modulus than Ti-6Al-4V, but their strength is limited due to a coarse grain structure. In this study, alloy strength is enhanced through controlled internal oxidation. Pre-oxidizing Nb-1Zr powder at 620 °C for 0, 60, and 120 min prior to co-extrusion increased 0.2% offset compression yield stress from 829 to 937 MPa. The improved strength is due to a fine-grained structure and high dislocation density. Longer oxidation times increased brittle niobium oxides. Future work will refine oxidation to tailor the properties of these alloys for load-bearing implants.

Originalsprache	Englisch
Seiten (von - bis)	74-77
Seitenumfang	4
Fachzeitschrift	Manufacturing Letters
Jahrgang	47
Elektronisch veröffentlicht (E-Pub)	12 Feb. 2026
DOIs	https://doi.org/10.1016/j.mfglet.2026.02.003
Publikationsstatus	Veröffentlicht - März 2026

ASJC Scopus Sachgebiete

Werkstoffmechanik
Wirtschaftsingenieurwesen und Fertigungstechnik

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10.1016/j.mfglet.2026.02.003Lizenz: CC BY 4.0

Andere Dateien und Links

Verknüpfung zur Publikation in Scopus

SIIRI: Sonderforschungsbereich-Transregio 298/2, Teilprojekt B04: Aktive Stimulus-responsive Implantate
Klose, C. (Projektleiter*in (Principal Investigator)), Pott, P.-C. (Projektleiter*in (Principal Investigator)), Maier, H. J. (Projektleiter*in (Principal Investigator)) & Wurz, M. C. (Projektleiter*in (Principal Investigator))
1 Jan. 2026 → 30 Juni 2029
Projekt: Forschung

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title = "Co-extrusion of internally oxidized Nb-1Zr: An avenue to new load-bearing implants",

abstract = "Niobium-zirconium alloys like Nb-1Zr offer high biocompatibility and osteoconductivity, with a lower Young's modulus than Ti-6Al-4V, but their strength is limited due to a coarse grain structure. In this study, alloy strength is enhanced through controlled internal oxidation. Pre-oxidizing Nb-1Zr powder at 620 °C for 0, 60, and 120 min prior to co-extrusion increased 0.2\% offset compression yield stress from 829 to 937 MPa. The improved strength is due to a fine-grained structure and high dislocation density. Longer oxidation times increased brittle niobium oxides. Future work will refine oxidation to tailor the properties of these alloys for load-bearing implants.",

keywords = "Co-extrusion, Niobium, Zirconium, Microstructure, Scanning transmission electron microscopy, Compression test, Implant material",

author = "Julian-Tobias Schleich and Siegmund, \{Julius Max Jakob\} and Phan, \{Minh Tien\} and Philipp-Cornelius Pott and Maier, \{Hans J{\"u}rgen\} and Christian Klose",

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year = "2026",

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doi = "10.1016/j.mfglet.2026.02.003",

language = "English",

volume = "47",

pages = "74--77",

journal = "Manufacturing Letters",

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publisher = "Society of Manufacturing Engineers",

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T1 - Co-extrusion of internally oxidized Nb-1Zr: An avenue to new load-bearing implants

AU - Schleich, Julian-Tobias

AU - Siegmund, Julius Max Jakob

AU - Phan, Minh Tien

AU - Pott, Philipp-Cornelius

AU - Maier, Hans Jürgen

AU - Klose, Christian

PY - 2026/3

Y1 - 2026/3

N2 - Niobium-zirconium alloys like Nb-1Zr offer high biocompatibility and osteoconductivity, with a lower Young's modulus than Ti-6Al-4V, but their strength is limited due to a coarse grain structure. In this study, alloy strength is enhanced through controlled internal oxidation. Pre-oxidizing Nb-1Zr powder at 620 °C for 0, 60, and 120 min prior to co-extrusion increased 0.2% offset compression yield stress from 829 to 937 MPa. The improved strength is due to a fine-grained structure and high dislocation density. Longer oxidation times increased brittle niobium oxides. Future work will refine oxidation to tailor the properties of these alloys for load-bearing implants.

AB - Niobium-zirconium alloys like Nb-1Zr offer high biocompatibility and osteoconductivity, with a lower Young's modulus than Ti-6Al-4V, but their strength is limited due to a coarse grain structure. In this study, alloy strength is enhanced through controlled internal oxidation. Pre-oxidizing Nb-1Zr powder at 620 °C for 0, 60, and 120 min prior to co-extrusion increased 0.2% offset compression yield stress from 829 to 937 MPa. The improved strength is due to a fine-grained structure and high dislocation density. Longer oxidation times increased brittle niobium oxides. Future work will refine oxidation to tailor the properties of these alloys for load-bearing implants.

KW - Co-extrusion

KW - Niobium

KW - Zirconium

KW - Microstructure

KW - Scanning transmission electron microscopy

KW - Compression test

KW - Implant material

UR - https://www.scopus.com/pages/publications/105030456095

U2 - 10.1016/j.mfglet.2026.02.003

DO - 10.1016/j.mfglet.2026.02.003

M3 - Article

SN - 2213-8463

VL - 47

SP - 74

EP - 77

JO - Manufacturing Letters

JF - Manufacturing Letters

ER -

Co-extrusion of internally oxidized Nb-1Zr: An avenue to new load-bearing implants

Abstract

ASJC Scopus Sachgebiete

Zugriff auf Dokument

Andere Dateien und Links

Projekte

SIIRI: Sonderforschungsbereich-Transregio 298/2, Teilprojekt B04: Aktive Stimulus-responsive Implantate

Dieses zitieren