Boron Nitride Nanotubes-Reinforced Glass Composites

• Published in: Journal of the American Ceramic Society Vol. 89; no. 1; pp. 388 - 390
• Main Authors: Bansal, Narottam P., Hurst, Janet B., Choi, Sung R.
• Format: Journal Article
• Language: English
• Published: Malden, USA Blackwell Science Inc 01.01.2006; Blackwell; Wiley Subscription Services, Inc
• Subjects: Applied sciences; Boron nitride; Building materials. Ceramics. Glasses; Calcium aluminate; Ceramic matrix composites; Chemical industry and chemicals; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fracture toughness; Glass; Glass matrix composites; Glasses; Glasses (including metallic glasses); Manufacture; Materials science; Mechanical properties; Modulus of rupture in bending; Nanomaterials; Nanostructure; Nanotubes; Physics; Specific materials; Scanning electron microscopy; Nanotube; Boron nitride; Mechanical properties; Aluminosilicate glass; Experimental study; Field emission microscopy; Composite material; Reinforced material
• ISSN: 0002-7820; 1551-2916
• DOI: 10.1111/j.1551-2916.2005.00701.x

Boron nitride nanotubes (BNNT) of significant lengths were synthesized by reaction of boron with nitrogen. Barium calcium aluminosilicate glass composites reinforced with∼4 wt% of BNNT were fabricated by hot pressing. Ambient‐temperature flexure strength and fracture toughness of the glass‐BNNT composites were determined. The strength and fracture toughness of the composite were higher by as much as 90% and 35%, respectively, than those of the unreinforced glass. Microscopic examination of the composite fracture surfaces showed pullout of the BNNT. The preliminary results on the processing and improvement in mechanical properties of BNNT‐reinforced glass matrix composites are being reported here for the first time.