Low-temperature densification by plasma activated sintering of Mg2Si-added Si3N4
Source abstract
Abstract
Abstract In this study, highly dense Si 3 N 4 ceramics with excellent mechanical properties were fabricated using Mg 2 Si as a sintering additive by plasma-activated sintering at 1400–1500 °C. The effects of the sintering temperature and content of Mg 2 Si on the densification, microstructures, and mechanical properties of the Si 3 N 4 ceramics were investigated. The mechanism responsible for the effect of Mg 2 Si in the promotion of the sinterability of Si 3 N 4 is discussed. The results showed that the addition of Mg 2 Si could effectively remove the oxide layers on the Si 3 N 4 particles and form a liquid phase during the sintering, promoting the densification and phase transition of the Si 3 N 4 ceramics. The Si 3 N 4 ceramic sintered at 1450 °C with 6.0 wt% of Mg 2 Si exhibited the maximum strength of 1050 MPa.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · MXene and MAX Phase Materials · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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