WC-5Co Cemented Carbides Fabricated by SPS

• Autorzy: Siwak P. , Grabiec D.

Identyfikatory

DOI

10.24425/amm.2018.125140

• Języki publikacji: EN

Abstrakty

EN

New graphite tools were designed and produced to fabricate a semi-finished product from which nine cutting inserts were obtained in one spark plasma sintering process. As a result, WC-5Co cemented carbides were spark plasma sintered and the effect of various sintering parameters such as compacting pressure, heating rate and holding time on the main mechanical properties were investigated. It was shown that WC-5Co cemented carbides spark plasma sintered at 1200°C, 80 MPa, 400°C/min, for 5 min are characterized by the best relation of hardness (1861±10 HV₃₀ ) and fracture toughness (9.30 MPa·m^1/2). The microstructure of these materials besides the WC ceramic phase and Co binder phase consists of a synthesized Co₃ W₃ C complex phase. Comparison with a commercial WC-6Co cutting insert fabricated by conventional powder metallurgy techniques shows that spark plasma sintering is a very effective technique to produce materials characterized by improved mechanical properties.

Słowa kluczowe

EN

spark plasma sintering; cemented carbides; WC-5Co; hardness; fracture toughness

• 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: 2018
• Tom: Vol. 63, iss. 4
• Strony: 2031--2037
• Opis fizyczny: Bibliogr. 50 poz., fot., rys., tab., wzory

Twórcy

autor

Siwak P.

• Uslugi Slusarskie, 147a Ostrowska Str., 63-405 Sieroszewice, Poland

autor

Grabiec D.

• Metal Forming Institute, 14 Jana Pawła II Str., 61-139 Poznan, Poland

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Uwagi

EN

The research studies were co-financed by The National Centre for Research and Development as part of the project no. POIR.01.01.01-00-0267/16 entitled "Fabrication of innovative electrodes for heating and hardening of wire tools for machining of hard materials from spark plasma sintered nanocrystalline WC-Co powders”.