Lee Chang Chuan
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Lee Chang Chuan
Official Name
Lee, Chang Chuan
Alternative Name
Lee, Cc
Chuan, Lee Chang
Lee, C. C.
Chuan, Lee C.
Lee, Chang Chuan
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Scopus Author ID
55312531900

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  • Publication
    Mechanical properties and microstructural behaviour of microwave sintered WC–Co
    (Springer, 2019)
    Raihan Rumman
    ;
    Lee Chang Chuan
    ;
    Jamie S. Quinton
    ;
    Reza Ghomashchi
    Abstract: 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 effect on grain growth of materials still requires clear understanding. Three different types of particle size, ranging from 1–3 µm to 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 observed in the order of nearly 1800 Hv for submicron samples, sintered at 1250 °C. Fracture toughness on the samples reached a maximum 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 between grains demonstrates the presence of homogenous Co, confirming good mechanical behaviour. The microstructural features associated to the sintering process have also been focused as part of the study, highlighting some challenges in the research. Graphic Abstract: Line scanning of WC (1–3 μm)–7.5 wt% Co (1–3 μm) sample, microwave sintered at 1400 °C[Figure not available: see fulltext.].
      11  2
  • Publication
    Microwave synthesis of silicon carbide nanowhiskers: Effect of molar ratio
    ( 2020-01-01)
    Lee Chang Chuan
    ;
    Kahar S.M.
    ;
    Voon Chun Hong
    Silicon carbide (SiC) is an attractive material for its excellent properties such as wide band gap, high chemical stability and thermal conductivity. The conventional methods for the preparation of SiC are time and energy consuming. In this paper, SiC nanowhiskers were synthesized by utilizing microwave heating. Mixture of graphite and silica of various ratio was heated to 1400 °C for 30 min at a heating rate of 20 °C/min. It was found that almost complete conversion of graphite and silica to silicon carbide nanowhiskers was observed for sample of mixture in the ratio of 1:3. Vapor-solid mechanism was suggested to explain the formation of SiC nanowhiskers.
      6  32