期刊
JOURNAL OF MATERIALS SCIENCE
卷 48, 期 18, 页码 6269-6275出版社
SPRINGER
DOI: 10.1007/s10853-013-7424-4
关键词
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资金
- UK Engineering and Physical Sciences Research Council (EPSRC)
- Centre for Advanced Structural Ceramics (CASC) at Imperial College London
- University of Sheffield
- EPSRC [EP/K008749/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K008749/1] Funding Source: researchfish
Homogeneous titanium carbide (TiC) coatings were prepared on carbon black (CB) particles by firing them with metallic titanium (Ti) powder in KCl or KCl-LiCl for 4 h at 750-850 A degrees C. As-prepared TiC-coated CB retained the spherical shape of as-received CB, indicating that the 'template-growth' mechanism had dominated the reaction process. TiC coating thickness could be readily tailored by simply adjusting the Ti to CB ratio (Ti/C) of the initial starting mixture. The true density of TiC-coated CB particles increased with Ti/C, reducing the density difference between them and other aggregates used in castable systems and potentially improving the castables consistency. Zeta potential measurement, sedimentation comparison and rheology testing revealed that water-wettability and dispersivity of CB were improved significantly after TiC coating.
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