Annealing-induced improvement in thermal conductivity of Si3N4 specimens produced by vat photopolymerization: A comparative study of vat photopolymerization and cold isostatic pressing
Source abstract
Abstract
This study addressed challenges in manufacturing high-quality silicon nitride (Si3N4) products using vat photopolymerization (VPP), a method enabling precise and complex manufacturing that was previously not feasible. A comparison of VPP and cold isostatic pressing (CIP) showed that the intergranular phases of VPP samples exhibited continuous network assembly, while the intergranular phases of CIP samples are dispersed and aggregated. VPP samples required more aggressive sintering conditions. Furthermore, they required a higher MgO content for densification, and this prolonged densification process adversely affected thermal conductivity that reached a maximum of 70.91 W·m–1·K–1. Finally, annealing improved the thermal conductivity of VPP samples by 72.44%, closing the gap with CIP samples (90.28 W·m–1·K–1) and reaching up to 96.20 W·m–1·K–1. Si3N4 samples with a high flexural strength of 908.28 ± 46.90 MPa were thus prepared by VPP. This study offers a solution for producing high-performance Si3N4 heat exchangers and other complex devices via VPP.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Additive Manufacturing and 3D Printing Technologies · Thermal properties of materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (53)
Show source-provided references
1. Silicon nitride: the engineering material of the future10.1007/s10853-011-5942-5 ↗
2. Effect of additive content on texture evolution and mechanical properties of Si3N4 ceramics prepared by hot pressing10.1016/j.msea.2024.146348 ↗
3. Effects of sintering additives on mechanical properties and microstructure of Si3N4 ceramics by microwave sintering10.1016/j.msea.2016.12.031 ↗
4. A tough silicon nitride ceramic with high thermal conductivity10.1002/adma.201102462 ↗
5. High temperature ceramic radomes (HTCR)-A review10.1016/j.ceramint.2021.04.203 ↗
6. Hot pressed Si3N4 ceramics using MgO-Al2O3 as sintering additive for vehicle engine parts10.1007/s11148-020-00490-4 ↗
7. Mechanical properties and biological activity of 3D printed silicon nitride materials10.1016/j.ceramint.2024.02.041 ↗
8. Micro-fabrication of ceramics: additive manufacturing and conventional technologies10.1007/s40145-020-0422-5 ↗
9. Near-net shaping of silicon nitride via aqueous room-temperature injection molding and pressureless sintering10.1016/j.ceramint.2017.05.097 ↗
10. Pressureless sintering of high performance silicon nitride ceramics at 1620°C10.1016/j.ceramint.2021.07.104 ↗
11. Additive manufacturing of SiOC, SiC, and Si3N4 ceramic 3D microstructures10.1002/adem.202300639 ↗
12. Effect of polystyrene addition on properties of porous Si3N4 ceramics fabricated by digital light processing10.1016/j.ceramint.2023.05.246 ↗
13. Si3N4 slurry with high solid phase, low viscosity prepared via surface-oxidation and silane coupling agent modification hybrid method10.1016/j.jeurceramsoc.2023.08.056 ↗
14. Preparation and properties of Si3N4 ceramics via digital light processing using Si3N4 powder coated with Al2O3-Y2O3 sintering additives
15. Review of additive manufacturing and densification techniques for the net- and near net-shaping of geometrically complex silicon nitride components10.1016/j.jeurceramsoc.2021.11.001 ↗
16. Fabrication processing and mechanical properties of Si3N4 ceramic turbocharger wheel10.1016/j.ceramint.2018.03.084 ↗
17. Microstructure and mechanical properties of dense Si3N4 ceramics prepared by direct coagulation casting and cold isostatic pressing10.1016/j.msea.2022.143782 ↗
18. Preparation of Si3N4 ceramics with high strength and high reliability via a processing strategy10.1016/S0955-2219(01)00438-1 ↗
19. Conventional versus additive manufacturing in the structural performance of dense alumina-zirconia ceramics: 20 years of research, challenges and future perspectives10.1016/j.jmapro.2022.02.041 ↗
20. Nacre-like carbon fiber-reinforced biomimetic ceramic composites: fabrication, microstructure, and mechanical performance10.1016/j.ceramint.2024.04.270 ↗
21. Four-dimensional printing of polymer-derived ceramics with high-resolution, reconfigurability, and shape memory effects
22. Research progress of the defects and innovations of ceramic vat photopolymerization
23. Effect of TMAH as a modifier on the performance of Si3N4 stereolithography pastes10.1016/j.ceramint.2024.02.028 ↗
24. Digital light processing 3D printing of surface-oxidized Si3N4 coated by silane coupling agent10.1080/21870764.2021.2009096 ↗
25. Capillary forces between spheres during agglomeration and liquid phase sintering10.1007/BF02646216 ↗
26. Kingery · 1990 · 395
27. Processing and thermal conductivity of sintered reaction‐bonded silicon nitride: (II) effects of magnesium compound and yttria additives10.1111/j.1551-2916.2006.01462.x ↗
28. Microstructure and thermal conductivity of gas-pressure-sintered Si3N4 ceramic: the effects of Y2O3 additive content10.1016/j.jeurceramsoc.2020.08.035 ↗
29. Molecular dynamics calculation of the ideal thermal conductivity of single-crystal α- and β-Si3N410.1103/PhysRevB.65.134110 ↗
30. Thermal conductivity of β‐Si3N4: II, effect of lattice oxygen10.1111/j.1151-2916.2000.tb01501.x ↗
31. Effect of aluminum content on mechanical properties and thermal conductivities of sintered reaction‐bonded silicon Nitride10.1111/ijac.12035 ↗
32. Thermal conductivity of β‐Si3N4: I, effects of various microstructural factors10.1111/j.1151-2916.1999.tb02209.x ↗
33. Effect of the binary nonoxide additives on the densification behavior and thermal conductivity of Si3N4 ceramics10.1111/jace.17282 ↗
34. Thermal conductivity improvement in silicon nitride ceramics via grain purification10.1111/jace.19478 ↗
35. Laser powder bed fusion for the fabrication of triply periodic minimal surface lattice structures: synergistic macroscopic and microscopic optimization10.1016/j.jmapro.2024.03.081 ↗
36. Advanced reaction-bonded SiC ceramics for space mirror blanks10.1016/j.jmapro.2024.01.069 ↗
37. Effects of particle size and color on photocuring performance of Si3N4 ceramic slurry by stereolithography10.1016/j.jeurceramsoc.2020.11.032 ↗
38. Rheological characterisation of ceramic inks for 3D direct ink writing: a review10.1016/j.jeurceramsoc.2021.08.031 ↗
39. Roles of solid loading in stereolithography additive manufacturing of ZrO2 ceramic10.1016/j.ijrmhm.2021.105604 ↗
40. Particle packing and rheological property of highly-concentrated ceramic suspensions: φm determination and viscosity prediction10.1023/A:1004885432221 ↗
41. Effect of sintering aids content and powder characteristics on gas pressure sintered Si3N4 ceramics10.1016/j.ceramint.2023.12.159 ↗
42. Experimental evidence for the anisotropic ostwald ripening of β‐silicon nitride10.1111/j.1151-2916.1999.tb02183.x ↗
43. The α-β transformation in silicon nitride single crystals10.1111/j.1151-2916.1997.tb02876.x ↗
44. Observations on the influence of secondary Me oxide additives (Me=Si, Al, Mg) on the microstructural evolution and mechanical behavior of silicon nitride ceramics containing RE2O3(RE=La, Gd, Lu)10.1111/j.1551-2916.2009.03435.x ↗
45. Thermal conductivity: IX, experimental investigation of effect of porosity on thermal conductivity10.1111/j.1551-2916.1954.tb20108.x ↗
46. Enhanced thermal conductivity of Si3N4 ceramics through pyrolytic carbon prepared by gel casting using DMAA10.1016/j.jmrt.2023.05.251 ↗
47. Effects of yttria and magnesia on densification and thermal conductivity of sintered reaction‐bonded silicon nitrides10.1111/jace.16015 ↗
48. High‐temperature vaporization behavior of oxides II. Oxides of Be, Mg, Ca, Sr, Ba, B, Al, Ga, in, Tl, Si, Ge, Sn, Pb, Zn, Cd, and Hg10.1063/1.555799 ↗
49. Microstructure in silicon nitride containing β‐phase seeding: III, grain growth and coalescence10.1111/j.1151-2916.2001.tb00932.x ↗
50. Effect of lattice defects on the thermal conductivity of β-Si3N410.1016/S0955-2219(02)00374-6 ↗
51. A study on the effects of liquid phase formation temperature and the content of sintering aids on the sintering of silicon nitride ceramics10.3390/cryst13071099 ↗
52. Fabrication of high performance silicon nitride ceramics with TiO2 additive by annealing process10.1016/j.ceramint.2022.11.059 ↗
53. Mechanical properties and thermal conductivity of Si3N4 ceramics with YF3 and MgO as sintering additives10.1016/j.ceramint.2016.07.024 ↗