Oxidation behavior of microwave absorbing SiCf/Si3N4 composites by incorporating self-healing phase
Source abstract
Abstract
In this work, two types self-healing phases, SiBCN and SiB 6 , with low complex permittivity were introduced into SiC f/Si 3N 4 composite to improve the oxidation resistance. The oxidation behavior of composites depends on the cracking degree and crack-healing ability of the matrix. With the incorporation of SiBCN and SiB 6 , a large amount of glass phase can be generated, and the cracks can be better filled even the serious matrix crack. After the oxidation of 1200 ℃, the residual strength of SiC f/Si 3N 4 composite incorporating SiBCN and SiB 6 can reach 227 MPa, while that of SiC f/Si 3N 4 was as low as 120 MPa.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · MXene and MAX Phase Materials · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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