Fabrication of β-Si3N4 whiskers from a GPSed-RBSN sponge using 6Y2O3–2MgO additives
Source abstract
Abstract
Abstract In this study, β-Si 3 N 4 whiskers with a diameter of 0.05–1.5 μm and length of about 70 μm were successfully fabricated using a gas pressure sintered (GPSed)-reaction boned silicon nitride (RBSN) process at 1550 °C for 9 h. The β-Si 3 N 4 whiskers grew on the frame and filled fully in the pores of the GPSed-RBSN sponge. 6Y 2 O 3 –2MgO additives played a significant role in the growth of β-Si 3 N 4 whiskers and α-Si 3 N 4 whiskers, while α-Si 3 N 4 whiskers, which were grown inside the RBSN sponge through the vapor–solid mechanism, had a diameter ranging from 50 to 100 nm and length of about 80 μm.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced Surface Polishing Techniques · Semiconductor materials and devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. Synthesis of Si3N4 whiskers in porous SiC bodies10.1016/j.matlet.2007.03.063 ↗
2. Hot compressive deformation behavior of a eutectic Al–Si alloy based composite reinforced with α-Si3N4 whiskeer10.1016/S0254-0584(03)00323-7 ↗
3. Preparation of silicon nitride single crystals by chemical vapor deposition10.1016/0022-0248(74)90301-7 ↗
4. Matsubara · J. Mater. Sci. Lett. · 1987 · 6 · 131310.1007/BF01794601 ↗
5. Microstructure and growth model for Rice–Hull-derived SiC whiskers10.1111/j.1151-2916.1988.tb05021.x ↗
6. Reinforcement of silicon nitride ceramics by β-Si3N4 whiskers10.1016/0955-2219(89)90027-7 ↗
7. Microstructure control of silicon nitride by seeding with rod-like10.1111/j.1151-2916.1994.tb07062.x ↗
8. Tochigi · Scripta Metall. Mater. · 1995 · 32 · p.180110.1016/0956-716X(95)00010-S ↗
9. Separate growth of α-Si3N4 and β-Si3N4 whiskers on or near a carbon substrate by carbothermal reduction10.1111/j.1151-2916.2001.tb01031.x ↗
10. Crystal growth of silicon nitride whiskers through a VLS mechanism using SiO2–Al2O3–Y2O3 oxides as liquid phase10.1016/S0272-8842(97)00042-4 ↗
11. Formation of α-Si3N4 whiskers with addition of NaN3 as catalyst10.1016/S0022-0248(01)01690-6 ↗
12. Size effect of raw Si powder on microstructures and mechanical properties of RBSN and GPSed-RBSN bodies10.1016/S0921-5093(01)01855-X ↗
13. Nitridation mechanism of Si compacts studied by transmission electron microscopy10.2320/matertrans1989.37.1547 ↗
14. Formation of rod-like Si3N4 grains in porous SRBSN bodies using 6Y2O3–2MgO sintering additives10.1016/j.ceramint.2009.01.010 ↗
15. Effects of processing method and additive composition on microstructure and thermal conductivity of Si3N4 ceramics10.1016/j.jeurceramsoc.2005.07.027 ↗
16. Development of microstructure during the fabrication of Si3N4 by nitridation and pressureless sintering of Si: Si3N4 compacts10.1007/BF01113761 ↗
17. Growth of silicon nitride whisker from polytitanosilazane10.1016/j.matlet.2003.12.032 ↗
18. Synthesis and photoluminescence of belt-shaped Si3N4 whiskers10.1016/j.matlet.2006.12.047 ↗
19. Mukasyan · Combust. Explos. Shock Waves · 1986 · 22 · 53410.1007/BF00755521 ↗