Consolidation and Oxidation of Ultra Fine WC-Co-HfB₂ Hard Materials by Spark Plasma Sintering

• Autorzy: Park Hyun-Kuk , Oh Ik-Hyun , Kim Ju-Hun , Hong Sung-Kil , Lee Jeong-Han

Identyfikatory

DOI

10.24425/amm.2021.136413

• Języki publikacji: EN

Abstrakty

EN

In this study, a novel composite was fabricated by adding the Hafnium diboride (HfB₂) to conventional WC-Co cemented carbides to enhance the high-temperature properties while retaining the intrinsic high hardness. Using spark plasma sintering, high density (up to 99.4%) WC-6Co-(1, 2.5, 4, and 5.5 wt. %) HfB₂ composites were consolidated at 1300°C (100°C/min) under 60 MPa pressure. The microstructural evolution, oxidation layer, and phase constitution of WC-Co-HfB₂ were investigated in the distribution of WC grain and solid solution phases by X-ray diffraction and FE-SEM. The WC-Co-HfB₂ composite exhibited improved mechanical properties (approximately 2,180.7 kg/mm²) than those of conventional WC-Co cemented carbides. The high strength of the fabricated composites was caused by the fine-grade HfB₂ precipitate and the solid solution, which enabled the tailoring of mechanical properties.

Słowa kluczowe

EN

WC cemented carbide; hafnium diboride; spark plasma sintering; oxidation; mechanical property

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2021
• Tom: Vol. 66, iss. 4
• Strony: 997--1000
• Opis fizyczny: Bibliogr. 8 poz., tab., rys., wzory

Twórcy

autor

Park Hyun-Kuk

• Korea Institute of Industrial Technology, Smart Mobility Materials and Components R&D Group, 6, Cheomdan-Gwagiro 208-Gil, Buk-gu, Gwang-ju, 61012, Korea

• https://orcid.org/0000-0002-6207-6217

autor

Oh Ik-Hyun

• Korea Institute of Industrial Technology, Smart Mobility Materials and Components R&D Group, 6, Cheomdan-Gwagiro 208-Gil, Buk-gu, Gwang-ju, 61012, Korea

• https://orcid.org/0000-0001-5773-197X

autor

Kim Ju-Hun

• Korea Institute of Industrial Technology, Smart Mobility Materials and Components R&D Group, 6, Cheomdan-Gwagiro 208-Gil, Buk-gu, Gwang-ju, 61012, Korea
• Chonnam National University, Materials Science & Engineering, 77, Yong-bongro, Buk-gu, Gwang-ju, 61186, Korea

• https://orcid.org/0000-0002-3385-9984

autor

Hong Sung-Kil

• Chonnam National University, Materials Science & Engineering, 77, Yong-bongro, Buk-gu, Gwang-ju, 61186, Korea

• https://orcid.org/0000-0001-6890-3626

autor

Lee Jeong-Han

• Korea Institute of Industrial Technology, Smart Mobility Materials and Components R&D Group, 6, Cheomdan-Gwagiro 208-Gil, Buk-gu, Gwang-ju, 61012, Korea
• Chonnam National University, Materials Science & Engineering, 77, Yong-bongro, Buk-gu, Gwang-ju, 61186, Korea

• https://orcid.org/0000-0002-8347-277X

Bibliografia

• [1] J. H. Lee, I. H. Oh, J. H. Jang, S. K. Hong, H. K. Park, J. Alloys Compd. 786, 1-10 (2019).
• [2] J. Garcia, V. C. Cipres, A. Blomqvist, B. Kaplan, Int. J. Refract. Met. Hard Mater. 80, 40-68 (2019).
• [3] S. A. Shalmani, M. Sobhani, O. Mirzaee, M. Zakeri, Ceram. Int. 46 (16), 25106-25112 (2020).
• [4] M. D. Brut, D. Tetard, C. Tixier, C. Faure, E. Chabas, 10th International Conference of The European Ceramic Society, Berlin, 1315-1320 (2007).
• [5] A. K. Kumar, K. Kurokawa, Books: Tungsten carbide - Processing and applications, chapter 2: Spark plasma sintering of ultrafine WC powders: A combined kinetic and microstructural study (2012).
• [6] R. G. Crookes, B. Marz, H. Wu, Mater. Des. 187, 108360 (2020).
• [7] C. Bargeron, R. Benson, R. Newman, A. N. Jette, T.E. Phillips, Mater. Sci. (1993).
• [8] C. Bagnall, J. Capo, W. J. Moorhead, Metallography Microstructure Analysis 7, 661-679 (2018).

Uwagi

1. This study has been conducted with the support of the Korea Institute of Industrial Technology (KITECH), Production Industry Leading Core Technology Developement Project as the “Development of an on-site facility attached cryogenic machining integrated system (KITECH EH-21-0010)”.

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).