Effect of nitrogen on mechanical properties of porous titanium compacts prepared by powder sintering

Naoyuki Nomura; Ik Hyun Oh; Shuji Hanada; Masafumi Kanehira; Keiichi Sasaki; Akihiko Chiba

doi:10.4028/0-87849-960-1.2313

Effect of nitrogen on mechanical properties of porous titanium compacts prepared by powder sintering

Naoyuki Nomura, Ik Hyun Oh, Shuji Hanada, Masafumi Kanehira, Keiichi Sasaki, Akihiko Chiba

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Nitrogen-doped and -undoped Ti powders were obtained by Plasma Rotating Electrode Process (PREP) in an Ar atmosphere using Ar-2 vol.%N2 and pure Ar, respectively, for plasma flame. Auger electron spectroscopy (AES) revealed that nitrogen is enriched at the surface of nitrogen-doped Ti powder and decreases along with the depth direction. Microstructure of a compact prepared by hot pressing the nitrogen-doped Ti powder shows a shell structure. The outer area is considered to form by the diffusion of nitrogen. This microstructure disappears after annealing at 1373 K for 3.6 ks. It is found that the compressive yield strength of porous Ti compacts can be improved by introducing nitrogen in Ti powder and is superior to that of human cortical bone.

Original language	English
Pages (from-to)	2313-2316
Number of pages	4
Journal	Materials Science Forum
Volume	475-479
Issue number	III
DOIs	https://doi.org/10.4028/0-87849-960-1.2313
Publication status	Published - 2005
Event	PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China Duration: 2004 Nov 2 → 2004 Nov 5

Keywords

Porous titanium
PREP
Sintering
Yield strength
Young's modulus

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10.4028/0-87849-960-1.2313

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title = "Effect of nitrogen on mechanical properties of porous titanium compacts prepared by powder sintering",

abstract = "Nitrogen-doped and -undoped Ti powders were obtained by Plasma Rotating Electrode Process (PREP) in an Ar atmosphere using Ar-2 vol.%N2 and pure Ar, respectively, for plasma flame. Auger electron spectroscopy (AES) revealed that nitrogen is enriched at the surface of nitrogen-doped Ti powder and decreases along with the depth direction. Microstructure of a compact prepared by hot pressing the nitrogen-doped Ti powder shows a shell structure. The outer area is considered to form by the diffusion of nitrogen. This microstructure disappears after annealing at 1373 K for 3.6 ks. It is found that the compressive yield strength of porous Ti compacts can be improved by introducing nitrogen in Ti powder and is superior to that of human cortical bone.",

keywords = "Porous titanium, PREP, Sintering, Yield strength, Young's modulus",

author = "Naoyuki Nomura and Oh, {Ik Hyun} and Shuji Hanada and Masafumi Kanehira and Keiichi Sasaki and Akihiko Chiba",

year = "2005",

doi = "10.4028/0-87849-960-1.2313",

language = "English",

volume = "475-479",

pages = "2313--2316",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications",

number = "III",

note = "PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing ; Conference date: 02-11-2004 Through 05-11-2004",

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TY - JOUR

T1 - Effect of nitrogen on mechanical properties of porous titanium compacts prepared by powder sintering

AU - Nomura, Naoyuki

AU - Oh, Ik Hyun

AU - Hanada, Shuji

AU - Kanehira, Masafumi

AU - Sasaki, Keiichi

AU - Chiba, Akihiko

PY - 2005

Y1 - 2005

N2 - Nitrogen-doped and -undoped Ti powders were obtained by Plasma Rotating Electrode Process (PREP) in an Ar atmosphere using Ar-2 vol.%N2 and pure Ar, respectively, for plasma flame. Auger electron spectroscopy (AES) revealed that nitrogen is enriched at the surface of nitrogen-doped Ti powder and decreases along with the depth direction. Microstructure of a compact prepared by hot pressing the nitrogen-doped Ti powder shows a shell structure. The outer area is considered to form by the diffusion of nitrogen. This microstructure disappears after annealing at 1373 K for 3.6 ks. It is found that the compressive yield strength of porous Ti compacts can be improved by introducing nitrogen in Ti powder and is superior to that of human cortical bone.

AB - Nitrogen-doped and -undoped Ti powders were obtained by Plasma Rotating Electrode Process (PREP) in an Ar atmosphere using Ar-2 vol.%N2 and pure Ar, respectively, for plasma flame. Auger electron spectroscopy (AES) revealed that nitrogen is enriched at the surface of nitrogen-doped Ti powder and decreases along with the depth direction. Microstructure of a compact prepared by hot pressing the nitrogen-doped Ti powder shows a shell structure. The outer area is considered to form by the diffusion of nitrogen. This microstructure disappears after annealing at 1373 K for 3.6 ks. It is found that the compressive yield strength of porous Ti compacts can be improved by introducing nitrogen in Ti powder and is superior to that of human cortical bone.

KW - Porous titanium

KW - PREP

KW - Sintering

KW - Yield strength

KW - Young's modulus

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U2 - 10.4028/0-87849-960-1.2313

DO - 10.4028/0-87849-960-1.2313

M3 - Conference article

AN - SCOPUS:17044367025

SN - 0255-5476

VL - 475-479

SP - 2313

EP - 2316

JO - Materials Science Forum

JF - Materials Science Forum

IS - III

T2 - PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing

Y2 - 2 November 2004 through 5 November 2004

ER -

Effect of nitrogen on mechanical properties of porous titanium compacts prepared by powder sintering

Abstract

Keywords

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