Formation of titanium nitride produced from nanocrystalline titanium powder under nitrogen atmosphere

A. S. Bolokang; M. J. Phasha

doi:10.1016/j.ijrmhm.2010.05.008

Formation of titanium nitride produced from nanocrystalline titanium powder under nitrogen atmosphere

A. S. Bolokang, M. J. Phasha

Council for Scientific and Industrial Research

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

The initially globular-shaped Ti powder particles were flattened to 'pan-cake' like shape after 12, 16, and thin flakes after 20 h of mechanical milling. Although no change peak positions of HCP Ti crystal structure, the increase in peak intensity with milling time was evident. It is found that the greater surface to volume ratio of the milled Ti powders accelerated the N ₂ uptake and subsequent formation of TiN at lower temperatures (884, 856 and 833 °C for 12, 16 and 20 h, respectively) than in the unmilled powder (∼ 1100 °C). Higher nitrogen content of 41-44 at.% by EDS analysis confirmed the high rate of dissolution on the milled powders.

Original language	English
Pages (from-to)	610-615
Number of pages	6
Journal	International Journal of Refractory Metals and Hard Materials
Volume	28
Issue number	5
DOIs	https://doi.org/10.1016/j.ijrmhm.2010.05.008
Publication status	Published - Sept 2010
Externally published	Yes

Keywords

Mechanical milling
Nitridation
Thermal analysis
Titanium

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.ijrmhm.2010.05.008

Cite this

@article{b50635c2f7a9490e8c2a8704c05fa660,

title = "Formation of titanium nitride produced from nanocrystalline titanium powder under nitrogen atmosphere",

abstract = "The initially globular-shaped Ti powder particles were flattened to 'pan-cake' like shape after 12, 16, and thin flakes after 20 h of mechanical milling. Although no change peak positions of HCP Ti crystal structure, the increase in peak intensity with milling time was evident. It is found that the greater surface to volume ratio of the milled Ti powders accelerated the N 2 uptake and subsequent formation of TiN at lower temperatures (884, 856 and 833 °C for 12, 16 and 20 h, respectively) than in the unmilled powder (∼ 1100 °C). Higher nitrogen content of 41-44 at.% by EDS analysis confirmed the high rate of dissolution on the milled powders.",

keywords = "Mechanical milling, Nitridation, Thermal analysis, Titanium",

author = "Bolokang, {A. S.} and Phasha, {M. J.}",

year = "2010",

month = sep,

doi = "10.1016/j.ijrmhm.2010.05.008",

language = "English",

volume = "28",

pages = "610--615",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0263-4368",

publisher = "Elsevier BV",

number = "5",

}

TY - JOUR

T1 - Formation of titanium nitride produced from nanocrystalline titanium powder under nitrogen atmosphere

AU - Bolokang, A. S.

AU - Phasha, M. J.

PY - 2010/9

Y1 - 2010/9

N2 - The initially globular-shaped Ti powder particles were flattened to 'pan-cake' like shape after 12, 16, and thin flakes after 20 h of mechanical milling. Although no change peak positions of HCP Ti crystal structure, the increase in peak intensity with milling time was evident. It is found that the greater surface to volume ratio of the milled Ti powders accelerated the N 2 uptake and subsequent formation of TiN at lower temperatures (884, 856 and 833 °C for 12, 16 and 20 h, respectively) than in the unmilled powder (∼ 1100 °C). Higher nitrogen content of 41-44 at.% by EDS analysis confirmed the high rate of dissolution on the milled powders.

AB - The initially globular-shaped Ti powder particles were flattened to 'pan-cake' like shape after 12, 16, and thin flakes after 20 h of mechanical milling. Although no change peak positions of HCP Ti crystal structure, the increase in peak intensity with milling time was evident. It is found that the greater surface to volume ratio of the milled Ti powders accelerated the N 2 uptake and subsequent formation of TiN at lower temperatures (884, 856 and 833 °C for 12, 16 and 20 h, respectively) than in the unmilled powder (∼ 1100 °C). Higher nitrogen content of 41-44 at.% by EDS analysis confirmed the high rate of dissolution on the milled powders.

KW - Mechanical milling

KW - Nitridation

KW - Thermal analysis

KW - Titanium

UR - http://www.scopus.com/inward/record.url?scp=77955551437&partnerID=8YFLogxK

U2 - 10.1016/j.ijrmhm.2010.05.008

DO - 10.1016/j.ijrmhm.2010.05.008

M3 - Article

AN - SCOPUS:77955551437

SN - 0263-4368

VL - 28

SP - 610

EP - 615

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

IS - 5

ER -

Formation of titanium nitride produced from nanocrystalline titanium powder under nitrogen atmosphere

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this