J. Mater. Sci. Technol. ›› 2023, Vol. 150: 96-103.DOI: 10.1016/j.jmst.2022.11.043

• Research Article • Previous Articles     Next Articles

lerating the design of multicomponent rare earth silicates for SiCf/SiC CMC by combinatorial material chip design and high throughput screening

Xirui Lva,b, Yiming Leia, Zhao Zhanga,b, Jie Zhanga,*, Jingyang Wanga   

  1. aShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
    bSchool of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
  • Received:2022-09-09 Revised:2022-11-23 Accepted:2022-11-26 Published:2023-07-01 Online:2023-02-07
  • Contact: * E-mail address: tjiezhang@imr.ac.cn (J. Zhang).

Abstract: High throughput experimentation is employed to establish a ternary system with the compositional range of 30.8 mol.%-75.7 mol.% SiO2, 16.6 mol.%-61.7 mol.% Yb2O3, and 6.3 mol.%-14.1 mol.% Ho2O3 through co-sputtering deposition on one combinatorial material chip. Considering their application in advanced SiCf/SiC CMC, the phase composition and mechanical properties of samples with various RE/Si ratios and Yb/Ho ratios are comprehensively investigated. Chemical stability and thermal expansion compatibility between SiC and RE silicates with different compositions are also validated. Optimized materials for the application of environmental barrier coating and interphase for SiCf/SiC CMC are screened respectively according to the above trends and data. This work is a case study to establish a composition-property library for RE2O3-SiO2 compounds. It is inspired more complicated multicomponent RE silicates could be prepared and characterized by high throughput experimentation, accelerating the design and screening of promising optimal candidates.

Key words: High throughput experimentation, RE silicates, Phase stability, Mechanical properties