Crystallization and microstructure formation of glass with Y2Si2O7-mullite eutectic composition

Improved mechanical properties and toughening mechanism of mullite ceramics reinforced by introducing Ti3AlC2 particles

“…Additionally, the Y 2 Si 2 O 7 (PDF#74‐1994) phase can be detected in all samples. According to the phase diagram of Y 2 O 3 –Al 2 O 3 –SiO 2 , the silicate liquid phase of Y 2 Si 2 O 7 was formed at about 1300°C on the surfaces of mullite particles, which is resulting from the reaction of the sintering additive of Y 2 O 3 and Si–O phase in mullite during sintering 23 . The existence of Y 2 Si 2 O 7 and Al 2 TiO 5 liquid phase is not only beneficial to promote the diffusion of particles, but also conducive to fill the porosity in the matrix, thus improving the densification of mullite–Ti 3 AlC 2 composites.…”

“…The authors thank the financial support of Science Research Project of Hunan Provincial Department of Education (Grant No. 19B146) and Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin University of Technology (20)(21)(22)(23)(24)(25)(26)(27)(28).…”