Microstructure and mechanical properties of W-reinforced Ti(CN) prepared by spark plasma sintering of premixed Ti(CN)-W powder

Hanjung Kwon; Sun A. Jung; Chang Yul Suh; Wonbaek Kim

doi:10.1016/j.ceramint.2016.02.111

Microstructure and mechanical properties of W-reinforced Ti(CN) prepared by spark plasma sintering of premixed Ti(CN)-W powder

Hanjung Kwon
, Sun A. Jung
, Chang Yul Suh
, Wonbaek 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

2 Scopus citations

Abstract

W-reinforced Ti(CN) with enhanced mechanical properties was prepared by spark plasma sintering of premixed Ti(CN)-W powder. The powder was prepared by milling and subsequent heat treatment of the TiO₂-WO₃-C mixture. The low affinity between W and C/N enabled the W particles to be embedded in the Ti(CN) matrix during heat-treatment. The uniformly distributed W particles in the Ti(CN) had a role in interrupting the crack propagation and enhancing the fracture toughness (K_IC: 7.65 MPa m^1/2). The high hardness of W, compared to those of other metals (Ni, Co), hardens the W-Ti(CN) cermet over other conventional Ti(CN)-based cermets (H_V: 30.8 GPa). The mechanical properties of the W-Ti(CN) were comparable to those of B-based superhard cermets. The W-Ti(CN) cermet could have considerable potential for use in structural applications.

Original language	English
Pages (from-to)	8750-8753
Number of pages	4
Journal	Ceramics International
Volume	42
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2016.02.111
State	Published - 2016.05.15

Keywords

Carbides
Hardness
Sintering
Toughness and toughening

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@article{a5975efdcbdc4d7db0fbcbe0e14b54f3,

title = "Microstructure and mechanical properties of W-reinforced Ti(CN) prepared by spark plasma sintering of premixed Ti(CN)-W powder",

abstract = "W-reinforced Ti(CN) with enhanced mechanical properties was prepared by spark plasma sintering of premixed Ti(CN)-W powder. The powder was prepared by milling and subsequent heat treatment of the TiO2-WO3-C mixture. The low affinity between W and C/N enabled the W particles to be embedded in the Ti(CN) matrix during heat-treatment. The uniformly distributed W particles in the Ti(CN) had a role in interrupting the crack propagation and enhancing the fracture toughness (KIC: 7.65 MPa m1/2). The high hardness of W, compared to those of other metals (Ni, Co), hardens the W-Ti(CN) cermet over other conventional Ti(CN)-based cermets (HV: 30.8 GPa). The mechanical properties of the W-Ti(CN) were comparable to those of B-based superhard cermets. The W-Ti(CN) cermet could have considerable potential for use in structural applications.",

keywords = "Carbides, Hardness, Sintering, Toughness and toughening",

author = "Hanjung Kwon and Jung, \{Sun A.\} and Suh, \{Chang Yul\} and Wonbaek Kim",

year = "2016",

month = may,

day = "15",

doi = "10.1016/j.ceramint.2016.02.111",

language = "English",

volume = "42",

pages = "8750--8753",

journal = "Ceramics International",

issn = "0272-8842",

number = "7",

}

TY - JOUR

T1 - Microstructure and mechanical properties of W-reinforced Ti(CN) prepared by spark plasma sintering of premixed Ti(CN)-W powder

AU - Kwon, Hanjung

AU - Jung, Sun A.

AU - Suh, Chang Yul

AU - Kim, Wonbaek

PY - 2016/5/15

Y1 - 2016/5/15

N2 - W-reinforced Ti(CN) with enhanced mechanical properties was prepared by spark plasma sintering of premixed Ti(CN)-W powder. The powder was prepared by milling and subsequent heat treatment of the TiO2-WO3-C mixture. The low affinity between W and C/N enabled the W particles to be embedded in the Ti(CN) matrix during heat-treatment. The uniformly distributed W particles in the Ti(CN) had a role in interrupting the crack propagation and enhancing the fracture toughness (KIC: 7.65 MPa m1/2). The high hardness of W, compared to those of other metals (Ni, Co), hardens the W-Ti(CN) cermet over other conventional Ti(CN)-based cermets (HV: 30.8 GPa). The mechanical properties of the W-Ti(CN) were comparable to those of B-based superhard cermets. The W-Ti(CN) cermet could have considerable potential for use in structural applications.

AB - W-reinforced Ti(CN) with enhanced mechanical properties was prepared by spark plasma sintering of premixed Ti(CN)-W powder. The powder was prepared by milling and subsequent heat treatment of the TiO2-WO3-C mixture. The low affinity between W and C/N enabled the W particles to be embedded in the Ti(CN) matrix during heat-treatment. The uniformly distributed W particles in the Ti(CN) had a role in interrupting the crack propagation and enhancing the fracture toughness (KIC: 7.65 MPa m1/2). The high hardness of W, compared to those of other metals (Ni, Co), hardens the W-Ti(CN) cermet over other conventional Ti(CN)-based cermets (HV: 30.8 GPa). The mechanical properties of the W-Ti(CN) were comparable to those of B-based superhard cermets. The W-Ti(CN) cermet could have considerable potential for use in structural applications.

KW - Carbides

KW - Hardness

KW - Sintering

KW - Toughness and toughening

UR - https://www.scopus.com/pages/publications/84977839345

U2 - 10.1016/j.ceramint.2016.02.111

DO - 10.1016/j.ceramint.2016.02.111

M3 - Journal article

AN - SCOPUS:84977839345

SN - 0272-8842

VL - 42

SP - 8750

EP - 8753

JO - Ceramics International

JF - Ceramics International

IS - 7

ER -

Microstructure and mechanical properties of W-reinforced Ti(CN) prepared by spark plasma sintering of premixed Ti(CN)-W powder

Abstract

Keywords

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