@article{SHI2021, author = {Lin-Kun SHI and Xiaobing ZHOU and Jian-Qing DAI and Ke CHEN and Zhengren HUANG and Qing HUANG}, title = {Microstructure and properties of nano-laminated Y3Si2C2 ceramics fabricated via in situ reaction by spark plasma sintering}, year = {2021}, journal = {Journal of Advanced Ceramics}, volume = {10}, number = {3}, pages = {578-586}, keywords = {spark plasma sintering (SPS), properties, Y3Si2C2, rare earth silicide carbides, ternary layered structure ceramic}, url = {https://www.sciopen.com/article/10.1007/s40145-021-0459-0}, doi = {10.1007/s40145-021-0459-0}, abstract = {A nano-laminated Y3Si2C2 ceramic material was successfully synthesized via an in situ reaction between YH2 and SiC using spark plasma sintering technology. A MAX phase-like ternary layered structure of Y3Si2C2 was observed at the atomic-scale by high resolution transmission electron microscopy. The lattice parameters calculated from both X-ray diffraction and selected area electron diffraction patterns are in good agreement with the reported theoretical results. The nano-laminated fracture of kink boundaries, delamination, and slipping were observed at the tip of the Vickers indents. The elastic modulus and Vickers hardness of Y3Si2C2 ceramics (with 5.5 wt% Y2O3) sintered at 1500 ℃ were 156 and 6.4 GPa, respectively. The corresponding values of thermal and electrical conductivity were 13.7 W·m-1·K-1 and 6.3×105 S·m-1, respectively.} }