Aligned Single‐Crystalline β‐Si₃N₄ Whiskers Prepared with SHS Process

Abstract

M. Xia et al./Aligned Single-Crystalline b-Si 3 N 4 Whiskers Fig. 4. Images shows mechanical resonance of individual as-synthesized b-Si 3 N 4 whiskers.

Synthesis of sillimanite whiskers

“…The anisotropic growth of whiskers induced by a metal catalyst bead is called the vapor-liquid-solid (VLS) growth mechanism [9][10][11][12][13][14][15], while the second growth method is called the vapor-solid (VS) mechanism [16][17][18]. As shown in Fig.…”

Self-propagating high-temperature synthesis of advanced materials and coatings

“…For example, SHS of fine uniform SiAlON whiskers (Figure 7a) obtained using α-Si 3 N 4 as a diluent in the Si–Al–N 2 system were reported [77]. Synthesis of thin (diameter ∼ 100 nm) single-crystal β-Si 3 N 4 fibres (Figure 7b) was accomplished by adding a tungsten as a catalyst [78]. Although the potential for SHS synthesis of β-Si 3 N 4 whickers has known since 1980 [79,80] using catalysts to control the property of the synthesised material is an important recent achievement in the field of SHS.…”

Ti-assisted β-SiC nanowhiskers by pyrolysis of PTFE: synthesis and mechanical properties

“…We applied an approach [2,[16][17][18][19] that uses in-situ TEM as an effective tool for measuring the elastic bending modulus of individual SiC whiskers. This technique is based on the electric field induced dynamic resonance phenomenon.…”