Characterization of ZrB2–TiC composites reinforced with short carbon fibers
Source abstract
Abstract
Abstract Solid solution formation, phase evolution, microstructure development, and mechanical behavior of ZrB2–TiC composites with/without carbon fiber additive were investigated. Fully dense composites were manufactured by spark plasma sintering route under 40 MPa load at 1900 °C for 420 s. FESEM and XRD studies were carried out to unveil the densification and toughening mechanisms in the sintered specimens. Results showed that the addition of only 1 wt% short carbon fibers increased the hardness from 21.8 GPa to 23.5 GPa. Moreover, a 3 % enhancement in the indentation fracture toughness was also observed due to the incorporation of short carbon fibers. The in-situ formation of ZrC and TiB2 phases were identified and related to a chemical reaction between the ZrB2 and TiC constituents. The solid solution development between the ZrB2 matrix and the in-situ formed TiB2 was also proved by the microstructural observation and the shifted peaks of ZrB2 in the XRD patterns.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Boron and Carbon Nanomaterials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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