Effects of Seeding with β-Si_3N4 Rod Crystals on Mechanical Properties of Silicon Nitride Ceramics
Source abstract
Abstract
In this paper, the effects of seeding β-Si3N4 rod crystals prepared by self-propagating high-temperature synthesis on the mechanical properties of silicon nitride ceramic were investigated. The experimental results showed that with the increase of β-Si3N4 rod crystals content, the fracture toughness increases, while the flexile strength decreases. The fracture toughness can increase from 4.0MPa·m1/2 to 6.7MPa·m1/2 when 8wt%·-Si3N4 rod crystal was added compared with that without seeding. The improvement of fracture toughness results from the grain pullout and bridging, branching of elongated grains.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced Surface Polishing Techniques · MXene and MAX Phase Materials
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