Rapid Consolidation of WC?ZrSiO4 Hard Materials by Spark Plasma Sintering: Microstructure, Densification, and Mechanical Properties

Jeong‑Han Lee; Ik‑Hyun Oh; Ju‑Hun Kim; Sung‑Kil Hong; Hyun‑Kuk Park

doi:10.1007/s12540-021-00969-w

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자료유형: 학술저널

저자정보: Jeong‑Han Lee (Korea Institute of Industrial Technology (KITECH)) Ik‑Hyun Oh (Korea Institute of Industrial Technology (KITECH)) Ju‑Hun Kim (Korea Institute of Industrial Technology (KITECH)) Sung‑Kil Hong (Chonnam National University) Hyun‑Kuk Park (Korea Institute of Industrial Technology (KITECH))

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.9

발행연도: 2021.9

수록면: 3,409 - 3,416 (8page)

DOI: 10.1007/s12540-021-00969-w

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Densely consolidated WC-based hard materials with 5?20 vol% ZrSiO4was fabricated by spark plasma sintering at 1400 ℃ ata constant heating rate of 70 ℃/min?1. To achieve mechanical alloying of WC-ZrSiO4, planetary ball milling was carried outfor 12 h, during which the brittle-brittle components (WC-ZrSiO4) became fragmented and their particles became refined. Itwas observed that certain, specific, non-isothermal sintering kinetics, such as apparent activation energy, sintering exponents,and densification strain, affected the densification behavior. The evolution of phase structure from powder to compact wasfound to be related the lattice distortion and micro-strain in the basal planes of WC. By examining the mechanical propertiesof the samples, it was that the added zircon content leads to enhanced fracture toughness (12.9 MPa m1/2) owing to thepresence of WC-ZrSiO4 in the cemented carbide. In fact, the microcrack propagation of the fracture passed through zirconfrom a transgranular to a ductile component (fcc) where the crack tips could be absorbed.

#Cemented carbide #Zircon #Mechanical alloying #Spark plasma sintering #Sintering kinetics

참고문헌 (43)

참고문헌 신청

A. Rizzo / 2020 / Materials 13:1377

D. Kurniawan / 2010 / Mater. Manuf. Process 25:370

3 D. Dong / 2020 / Vaccum 179:109571

4 Q. Tang / 2016 / Ceram. Int 42:18100

Jeong‑Han Lee / 2019 / Characterization and Property Evaluation of Ti‑Based Target Materials and Their Nitride Nano‑composites Coating Layers / Metals and Materials International 25(1):268~276

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