Toughening of SiC matrix with in-situ created TiB2 particles
Source abstract
Abstract
Abstract SiC–TiB 2 composites with up to 50 vol% TiB 2 were fabricated by in-situ reaction between TiO 2 , B 4 C and C. The densification of the uniaxially pressed samples was done using pressureless sintering in the presence of sintering aids consisting of Al 2 O 3 and Y 2 O 3 . The influence of the volume fraction of TiB 2 and sintering temperature on density and fracture toughness was examined. It was found that fracture toughness is strongly affected by the volume fraction of TiB 2 . The presence of TiB 2 particles suppresses the grain growth of SiC and facilitates different toughening mechanisms to operate which, in turn, increases fracture toughness of the composite. The highest value for fracture toughness of 5.7 MPa m 1/2 was measured in samples with 30 vol% TiB 2 sintered at 1940 °C.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
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References (18)
Show source-provided references
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