scholarly journals Effect of MgO addition on the sinterability and mechanical properties of mullite ceramics

Cerâmica ◽  
2021 ◽  
Vol 67 (383) ◽  
pp. 261-268
Author(s):  
T. A. Olcoski ◽  
A. L. Chinelatto ◽  
A. S. A. Chinelatto
Keyword(s):  
Mechanical Properties ◽  
Mullite Ceramics

Thermo-mechanical properties of mullite ceramics: New data

2018 ◽  
Vol 102 (1) ◽  
pp. 416-426 ◽  
Author(s):  
Thomas F. Krenzel ◽  
Jürgen Schreuer ◽  
Derek Laubner ◽  
Michel Cichocki ◽  
Hartmut Schneider
Keyword(s):  
Mechanical Properties ◽  
Mullite Ceramics

Porous mullite ceramics with enhanced mechanical properties prepared by SLS using MnO2 and phenolic resin coated double-shell powders

2019 ◽  
Vol 45 (17) ◽  
pp. 21136-21143 ◽  
Author(s):  
An-Nan Chen ◽  
Jing-Yan Chen ◽  
Jia-Min Wu ◽  
Li-Jin Cheng ◽  
Rong-Zhen Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phenolic Resin ◽  
Porous Mullite ◽  
Mullite Ceramics

scholarly journals Mechanical Properties and Thermal Conductivity of Ytterbium-Silicate-Mullite Composites

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 671 ◽  
Author(s):  
Jie Xiao ◽  
Wenbo Chen ◽  
Liangliang Wei ◽  
Wenting He ◽  
Hongbo Guo
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Crack Deflection ◽  
Additive Concentration ◽  
Environmental Barrier Coatings ◽  
Pinning Effect ◽  
Al2o3 Phase ◽  
Ytterbium Silicate ◽  
Mullite Ceramics

Various Ytterbium-Silicate-Mullite composites were successfully fabricated by adding Yb2SiO5 into mullite ceramics and then using pressureless sintering at 1550 °C. The influence of Yb2SiO5 addition on the microstructure, mechanical properties, and thermal conductivity of ytterbium-silicate-mullite composites was investigated. Results show that the composites mainly consisted of a mullite matrix and some in situ formed Yb2Si2O7 and Al2O3 phases. By the addition of Yb2SiO5, the Vickers hardness of composites reached ~9.0 at an additive concentration of 5 mol %. Fracture toughness increased to ~2.7 MPa·m1/2 at the additive concentration of 15 mol %, owing to the trans-granular fracture and crack deflection of the pinning effect of the Al2O3 phase in the composites. With the increase of the Al2O3 phase in the composite, the thermal conductivity for the 15YbAM reached around 4.0 W/(m·K) at 1200 °C. Although the thermal conductivity increased, it is still acceptable for such composites to be used as environmental barrier coatings.

Sign in / Sign up

Export Citation Format

Share Document