Mullite whiskers derived from kaolin
Source abstract
Abstract
Abstract Short mullite whiskers prepared by firing compacts of kaolin and NH 4 Al(SO 4 ) 2 ·12H 2 O powders, with a small addition (0.8, 1.5 wt%) of NaH 2 PO 4 ·2H 2 O, in air 1300 and 1400 °C for 15 h have been characterized in terms of whisker morphology, composition and structure. Relatively uniform whisker shaped crystals grew within the silicate glass matrix. After chemically leaching the glass matrix with HF solution using a microwave heating source, the resulting whiskers were exposed as isolated crystals and exhibited an aspect ratio of >17 (∼0.5 μm in diameter). The mullite whiskers had a composition of 51.06 mol% Al 2 O 3 and 48.94 mol% SiO 2 , with an orthorhombic crystallographic structure.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Advanced ceramic materials synthesis · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
Show source-provided references
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