Three-dimensional morphology of (W,V)Cx in VC-doped WC-Co hard metals

I. Sugiyama; Y. Mizumukai; T. Taniuchi; K. Okada; F. Shirase; T. Tanase; Y. Ikuhara; T. Yamamoto

doi:10.1016/j.scriptamat.2013.06.002

Three-dimensional morphology of (W,V)C_x in VC-doped WC-Co hard metals

I. Sugiyama, Y. Mizumukai, T. Taniuchi, K. Okada, F. Shirase, T. Tanase, Y. Ikuhara, T. Yamamoto

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

28 Citations (Scopus)

Abstract

The actual three-dimensional morphology of WC grains and grain growth inhibitors ((W,V)C_x) on the grains are determined for VC-doped WC-Co hard metals. WC grains have a triangular prismatic shape with atomically sharp corners, and some trapezoidal prisms are formed on each prismatic plane. The plan view chemical mapping of a trapezoidal prism has revealed that (W,V)C _x phases form hemisphere shapes with some planar layers. The mechanism for forming islands is discussed in terms of lattice mismatch.

Original language	English
Pages (from-to)	473-476
Number of pages	4
Journal	Scripta Materialia
Volume	69
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2013.06.002
Publication status	Published - 2013 Sept
Externally published	Yes

Keywords

Energy dispersive
High-angle annular dark field (HAADF)
High-resolution electron microscopy (HREM)
Liquid-phase sintering
Refractory metals
X-ray spectroscopy (EDXS)

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2013.06.002

Cite this

@article{10e61cbc41d34e70993721f3903779e8,

title = "Three-dimensional morphology of (W,V)Cx in VC-doped WC-Co hard metals",

abstract = "The actual three-dimensional morphology of WC grains and grain growth inhibitors ((W,V)Cx) on the grains are determined for VC-doped WC-Co hard metals. WC grains have a triangular prismatic shape with atomically sharp corners, and some trapezoidal prisms are formed on each prismatic plane. The plan view chemical mapping of a trapezoidal prism has revealed that (W,V)C x phases form hemisphere shapes with some planar layers. The mechanism for forming islands is discussed in terms of lattice mismatch.",

keywords = "Energy dispersive, High-angle annular dark field (HAADF), High-resolution electron microscopy (HREM), Liquid-phase sintering, Refractory metals, X-ray spectroscopy (EDXS)",

author = "I. Sugiyama and Y. Mizumukai and T. Taniuchi and K. Okada and F. Shirase and T. Tanase and Y. Ikuhara and T. Yamamoto",

note = "Funding Information: This study was supported in part by the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) and Ministry of Education, Culture, Sports and Technology (MEXT) . I.S. is supported as a JSPS research fellow. This work was conducted in the research Hub for Advanced Nano Characterization, the University of Tokyo, supported by MEXT.",

year = "2013",

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doi = "10.1016/j.scriptamat.2013.06.002",

language = "English",

volume = "69",

pages = "473--476",

journal = "Scripta Materialia",

issn = "1359-6462",

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T1 - Three-dimensional morphology of (W,V)Cx in VC-doped WC-Co hard metals

AU - Sugiyama, I.

AU - Mizumukai, Y.

AU - Taniuchi, T.

AU - Okada, K.

AU - Shirase, F.

AU - Tanase, T.

AU - Ikuhara, Y.

AU - Yamamoto, T.

N1 - Funding Information: This study was supported in part by the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) and Ministry of Education, Culture, Sports and Technology (MEXT) . I.S. is supported as a JSPS research fellow. This work was conducted in the research Hub for Advanced Nano Characterization, the University of Tokyo, supported by MEXT.

PY - 2013/9

Y1 - 2013/9

N2 - The actual three-dimensional morphology of WC grains and grain growth inhibitors ((W,V)Cx) on the grains are determined for VC-doped WC-Co hard metals. WC grains have a triangular prismatic shape with atomically sharp corners, and some trapezoidal prisms are formed on each prismatic plane. The plan view chemical mapping of a trapezoidal prism has revealed that (W,V)C x phases form hemisphere shapes with some planar layers. The mechanism for forming islands is discussed in terms of lattice mismatch.

AB - The actual three-dimensional morphology of WC grains and grain growth inhibitors ((W,V)Cx) on the grains are determined for VC-doped WC-Co hard metals. WC grains have a triangular prismatic shape with atomically sharp corners, and some trapezoidal prisms are formed on each prismatic plane. The plan view chemical mapping of a trapezoidal prism has revealed that (W,V)C x phases form hemisphere shapes with some planar layers. The mechanism for forming islands is discussed in terms of lattice mismatch.

KW - Energy dispersive

KW - High-angle annular dark field (HAADF)

KW - High-resolution electron microscopy (HREM)

KW - Liquid-phase sintering

KW - Refractory metals

KW - X-ray spectroscopy (EDXS)

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DO - 10.1016/j.scriptamat.2013.06.002

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VL - 69

SP - 473

EP - 476

JO - Scripta Materialia

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