Reactive and non-reactive preparation of B6O materials by FAST/SPS. Issue 1 (January 2015)

• Record Type: Journal Article
• Authors: Thiele, M.; Hermann, M.; Müller, C.; Gestrich, T.; Michaelis, A.
• Is Part Of: Journal of the European Ceramic Society. Volume 35:Issue 1(2015:Jan.)
• Page Start: 47
• Page End: 60
• Publication Date: 2015-01
• Subjects: Boron suboxide -- Mechanical properties -- Microstructure-final -- Wear parts; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2014.08.003
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: B6 O materials were prepared by a reactive and a non-reactive sintering routine using FAST/SPS and sintering temperatures of 1850 °C. Their sintering behavior, phase and microstructure formation and the mechanical properties are comparatively discussed. We demonstrate that the reactive sintering of B/B2 O3 -mixtures with oxide sintering additives is a promising and cost-effective alternative to the densification of pre-synthesized B6 O with a resulting hardness of up to 22 GPa (HV5 ) and a fracture toughness of up to 3 MPa m (SEVNB) similar to non-reactive prepared B6 O materials. The flexure strength is up to 360 MPa and 540 MPa for the reactive and non-reactive sintered materials, respectively, and substantially affected by the amount of B2 O3 in the sintering liquid.