Mechanical and electrical properties of MoSi2-based ceramics with various ZrB2-20 vol% SiC as additives for ultra high temperature heating element
Source abstract
Abstract
Abstract MoSi 2 -(ZrB 2 -20 vol% SiC) ceramics were produced by pressureless sintering at 1700–1900 °C for 1 h. The amounts of ZrB 2 -20 vol% SiC were in the range of 0–80 vol%. Synergetic effects of ZrB 2 and SiC additives on flexure strength of MoSi 2 based ceramics were investigated in detail. A maximum strength of 279 ± 20 MPa was examined for the ceramic with 20 vol% (ZrB 2 -20 vol% SiC). The electrical resistivity of the ceramics decreased with the volume fraction of (ZrB 2 -20 vol% SiC) increasing. Microstructure analysis and topological transformation calculations were carried out, which further proved the flexure strength and electrical resistivity measurement results.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Intermetallics and Advanced Alloy Properties · Advanced materials and composites
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