YB2C2: A new additive for fabricating Si3N4 ceramics with superior mechanical properties and medium thermal conductivity
Source abstract
Abstract
Abstract Si3N4 ceramics were hot-pressed with MgO and self-synthesized YB2C2 as sintering additives at 1800 °C for 2 h under the pressure of 60 MPa. The addition of YB2C2 played a significant role in the simultaneous achievement of superior mechanical properties and medium thermal conductivity of Si3N4 ceramics. Due to the existence of multilayer YB2C2 nanoplatelets, the flexural strength and fracture toughness of Si3N4 ceramics reached up to 1189.6 ± 43.7 MPa and 9.46 ± 0.14 MPa m1/2, respectively. Owing to the reaction between YB2C2 and native SiO2 on the surface of Si3N4 powders, the lattice oxygen was removed and the thermal conductivity of Si3N4 ceramics was about 77.0 W/(m·K).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · MXene and MAX Phase Materials · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. Sintered reaction-bonded silicon nitrides with high thermal conductivity: the effect of the starting Si powder and Si3N4 diluents10.1016/j.jeurceramsoc.2013.11.040 ↗
2. Effect of particle size and oxygen content of Si on processing, microstructure and thermal conductivity of sintered reaction bonded Si3N410.1016/j.jallcom.2014.01.131 ↗
3. Effects of yttria and magnesia on densification and thermal conductivity of sintered reaction-bonded silicon nitrides10.1111/jace.16015 ↗
4. A strategy for fabricating textured silicon nitride with enhanced thermal conductivity10.1016/j.jeurceramsoc.2014.01.025 ↗
5. Effect of lattice defects on the thermal conductivity of beta- Si3N410.1016/S0955-2219(02)00374-6 ↗
6. Processing and properties of sintered reaction-bonded silicon nitride with Y2O3–MgSiN2: effects of Si powder and Li2O addition10.1016/j.actamat.2007.06.014 ↗
7. Comparative study of oxide and non-oxide additives in high thermal conductive and high strength Si3N4 ceramics10.1016/j.ceramint.2016.08.051 ↗
8. Enhanced thermal conductivity in Si3N4 ceramic with the addition of Y2Si4N6C10.1111/jace.15544 ↗
9. Mechanical properties and thermal conductivity of Si3N4 ceramics with YF3 and MgO as sintering additives10.1016/j.ceramint.2016.07.024 ↗
10. Extraordinary toughening enhancement and flexural strength in Si3N4 composites using graphene sheets10.1016/j.jeurceramsoc.2013.08.039 ↗
11. Enhancement of toughness and wear resistance in boron nitride nanoplatelet (BNNP) reinforced Si3N4 nanocomposites
12. Highly wear-resistant and low-friction Si3N4 composites by addition of graphene nanoplatelets approaching the 2D limit
13. Mechanical and thermodynamic properties of YB2C2 under pressure10.1016/j.physb.2017.09.026 ↗
14. YB2C2: a machinable layered ternary ceramic with excellent damage tolerance10.1016/j.scriptamat.2016.06.041 ↗
15. A tough silicon nitride ceramic with high thermal conductivity10.1002/adma.201102462 ↗
16. The α/β silicon nitride phase transformation
17. Effect of α/β phase ratio on microstructure and mechanical properties of silicon nitride ceramics10.1557/JMR.2001.0311 ↗
18. Improving thermal conductivity of polymer composites by reducing interfacial thermal resistance between boron nitride nanotubes10.1016/j.compscitech.2018.07.010 ↗
19. Low temperature pressureless sintering of silicon nitride ceramics for circuit substrates in powder electronic devices10.1016/j.ceramint.2017.12.033 ↗
20. Effect of microstructure on the thermal conductivity of hot-pressed silicon nitride materials10.1111/j.1151-2916.2002.tb00066.x ↗
21. Effect of grain size on the thermal conductivity of Si3N410.1111/j.1151-2916.1999.tb01835.x ↗
22. Effect of sintering additive composition on the processing and thermal conductivity of sintered reaction-bonded Si3N410.1111/j.1151-2916.2004.tb07747.x ↗
23. Microstructure and fracture toughness of Si3N4 + graphene platelet composites10.1016/j.jeurceramsoc.2012.04.022 ↗
24. The effect of graphene nanoplatelet thickness on the fracture toughness of Si3N4 composites10.1016/j.ceramint.2018.12.180 ↗
25. Fracture toughness and toughening mechanisms in graphene platelet reinforced Si3N4 composites10.1016/j.scriptamat.2012.02.009 ↗