Hard and tough boron suboxide based composites

• Published in: Ceramics international Vol. 34; no. 7; pp. 1713 - 1717
• Main Authors: Shabalala, T.C., McLachlan, D.S., Sigalas, I., Herrmann, M.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.09.2008; Elsevier Science
• Subjects: Abrasives and cutting tools; Applied sciences; Boron suboxide; Building materials. Ceramics. Glasses; Ceramic industries; Chemical industry and chemicals; Cross-disciplinary physics: materials science; rheology; Cutting tools (E); Exact sciences and technology; Hot pressing (A); Materials science; Other materials; Physics; Specific materials; Technical ceramics; Toughness and toughening (C); Cutting tools (E); Boron suboxide; Hot pressing (A); Toughness and toughening (C); Ceramic matrix composite; Scanning electron microscopy; Mechanical properties; Hardness; Experimental study; X ray diffraction; Oxide ceramics; Composite material; Hard material; Powder; Fracture toughness; Hot pressing; Transmission electron microscopy; Boron Oxides; Technical ceramics; Cutting tool; Manufacturing; Microstructure; Alumina

Boron suboxide (B 6O) powder was synthesized at temperatures of about 1400 °C from the reaction of amorphous boron powder with boric acid. The synthesized B 6O powders were hot pressed at temperatures up to 1900 °C and at pressures of 50 MPa. Additionally to pure B 6O materials, composites with alum...