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논문 기본 정보

자료유형
학술저널
저자정보
Raihan Rumman (Flinders University) Lee C. Chuan (University Malaysia Perlis) Jamie S. Quinton (Flinders University) Reza Ghomashchi (The University of Adelaide)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.26 No.6
발행연도
2020.1
수록면
844 - 853 (10page)

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Cemented carbides have been of great interest within industrially manufacturable hard materials for their mechanical properties. Microwave sintering is known for its application on a range of hard materials. Although it has been widely used, its effecton grain growth of materials still requires clear understanding. Three different types of particle size, ranging from 1–3 μmto 100 nm were used for microwave sintering where temperature was used in this study within the range of 1000–1400 °C,while pressure during initial compaction of powder particles was kept constant. The maximum hardness was observedin the order of nearly 1800 Hv for submicron samples, sintered at 1250 °C. Fracture toughness on the samples reached amaximum of 16 MPa √m for micron samples sintered at 1400 °C. Grain growth in all samples was not more than 1–3 μm,even without the presence of any commercial grain growth inhibitors as part of the composition. Line scanning betweengrains demonstrates the presence of homogenous Co, confirming good mechanical behaviour. The microstructural featuresassociated to the sintering process have also been focused as part of the study, highlighting some challenges in the research.

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