Investigation of the conditions required for the formation of (Ti,W)(CN) during carburization of titanium under nitrogen

Hanjung Kwon; Ahram Moon; Wonbaek Kim; Jiwoong Kim

doi:10.1016/j.matlet.2017.08.024

Investigation of the conditions required for the formation of (Ti,W)(CN) during carburization of titanium under nitrogen

Hanjung Kwon
, Ahram Moon
, Wonbaek Kim
, Jiwoong Kim^*

^*Corresponding author for this work

Metallurgical System Engineering

Korea Institute of Geoscience and Mineral Resources
University of Science and Technology UST

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

1 Scopus citations

Abstract

Phase stability diagrams for a Ti–W–C–N system were constructed as a function of carbon activity and nitrogen pressure. It was found that the stability domains of titanium carbonitride (Ti(CN)) and W disappeared due to the high stability of the (Ti,W)(CN) phase when the Ti:W molar ratio was 3:1. When the Ti:W molar ratio was changed to 1:1, the phase stability domain of (Ti,W)(CN) reduced and the phase stability diagram consisted of Ti, W, Ti(CN), and (Ti,W)(CN). Finally, when the Ti:W molar ratio was 1:3, the stable region of (Ti,W)(CN) phase disappeared due to the low affinity between W and N. The results of this study can be used as a practical guideline for preparing a toughened (Ti,W)(CN) phase using Ti/W mixtures.

Original language	English
Pages (from-to)	287-290
Number of pages	4
Journal	Materials Letters
Volume	209
DOIs	https://doi.org/10.1016/j.matlet.2017.08.024
State	Published - 2017.12.15

Keywords

Ceramics
Phase diagrams
Stability domain
Thermodynamics
Titanium carbonitride

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10.1016/j.matlet.2017.08.024

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@article{13043af8e7874bdb97874bdde92e696c,

title = "Investigation of the conditions required for the formation of (Ti,W)(CN) during carburization of titanium under nitrogen",

abstract = "Phase stability diagrams for a Ti–W–C–N system were constructed as a function of carbon activity and nitrogen pressure. It was found that the stability domains of titanium carbonitride (Ti(CN)) and W disappeared due to the high stability of the (Ti,W)(CN) phase when the Ti:W molar ratio was 3:1. When the Ti:W molar ratio was changed to 1:1, the phase stability domain of (Ti,W)(CN) reduced and the phase stability diagram consisted of Ti, W, Ti(CN), and (Ti,W)(CN). Finally, when the Ti:W molar ratio was 1:3, the stable region of (Ti,W)(CN) phase disappeared due to the low affinity between W and N. The results of this study can be used as a practical guideline for preparing a toughened (Ti,W)(CN) phase using Ti/W mixtures.",

keywords = "Ceramics, Phase diagrams, Stability domain, Thermodynamics, Titanium carbonitride",

author = "Hanjung Kwon and Ahram Moon and Wonbaek Kim and Jiwoong Kim",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = dec,

day = "15",

doi = "10.1016/j.matlet.2017.08.024",

language = "English",

volume = "209",

pages = "287--290",

journal = "Materials Letters",

issn = "0167-577X",

}

TY - JOUR

T1 - Investigation of the conditions required for the formation of (Ti,W)(CN) during carburization of titanium under nitrogen

AU - Kwon, Hanjung

AU - Moon, Ahram

AU - Kim, Wonbaek

AU - Kim, Jiwoong

PY - 2017/12/15

Y1 - 2017/12/15

N2 - Phase stability diagrams for a Ti–W–C–N system were constructed as a function of carbon activity and nitrogen pressure. It was found that the stability domains of titanium carbonitride (Ti(CN)) and W disappeared due to the high stability of the (Ti,W)(CN) phase when the Ti:W molar ratio was 3:1. When the Ti:W molar ratio was changed to 1:1, the phase stability domain of (Ti,W)(CN) reduced and the phase stability diagram consisted of Ti, W, Ti(CN), and (Ti,W)(CN). Finally, when the Ti:W molar ratio was 1:3, the stable region of (Ti,W)(CN) phase disappeared due to the low affinity between W and N. The results of this study can be used as a practical guideline for preparing a toughened (Ti,W)(CN) phase using Ti/W mixtures.

AB - Phase stability diagrams for a Ti–W–C–N system were constructed as a function of carbon activity and nitrogen pressure. It was found that the stability domains of titanium carbonitride (Ti(CN)) and W disappeared due to the high stability of the (Ti,W)(CN) phase when the Ti:W molar ratio was 3:1. When the Ti:W molar ratio was changed to 1:1, the phase stability domain of (Ti,W)(CN) reduced and the phase stability diagram consisted of Ti, W, Ti(CN), and (Ti,W)(CN). Finally, when the Ti:W molar ratio was 1:3, the stable region of (Ti,W)(CN) phase disappeared due to the low affinity between W and N. The results of this study can be used as a practical guideline for preparing a toughened (Ti,W)(CN) phase using Ti/W mixtures.

KW - Ceramics

KW - Phase diagrams

KW - Stability domain

KW - Thermodynamics

KW - Titanium carbonitride

UR - https://www.scopus.com/pages/publications/85029678078

U2 - 10.1016/j.matlet.2017.08.024

DO - 10.1016/j.matlet.2017.08.024

M3 - Journal article

AN - SCOPUS:85029678078

SN - 0167-577X

VL - 209

SP - 287

EP - 290

JO - Materials Letters

JF - Materials Letters

ER -

Investigation of the conditions required for the formation of (Ti,W)(CN) during carburization of titanium under nitrogen

Abstract

Keywords

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