Spark plasma sintering and pressureless sintering of SiC using aluminum borocarbide additives

Preparation and properties of Sip/Al composites by spark plasma sintering

“…The Si and Al powders in various volume fractions (9,18,30, and 45 vol.% Si) were mixed in a high-speed planetary miller (QM-3SP2) for 7 h at a rotation speed of 146 rpm, using agate balls as the milling medium. Fig.…”

“…By discharging between the powder particles, it can produce local high temperature, which will make some components soften or even partly melted and then fill the gaps between particles. As a result, SPS is beneficial to the densification of composites with much different melting temperatures between the matrix and the reinforced phase [8][9][10][11], including SiAl system. In the present study, Si p /Al composites were therefore prepared by spark plasma sintering and the densification behavior was mainly studied.…”

Chemical composition and microstructure of Al3BC3 prepared by different densification methods

“…1 In addition, the application field of the materials has been expanded to a sintering additive. 2 Consequently, intensive researches have been performed about the ternary materials during the last decades. 3,4 The ternary compound was described as Al 4 B 1-3 C 4 by Matkovich et al at 1964.…”

Wet Processing and Low‐Temperature Pressureless Sintering of SiC Using a Novel Al3BC3Sintering Additive

“…The sintering mechanism of the SiC–Al 3 BC 3 was discussed elsewhere in detail (S. H. Lee and H. Tanaka, unpublished data) 26 . In a previous report, the present authors observed that the sintering behavior, microstructure, and mechanical properties of SiC sintered with Al 3 BC 3 additive were very similar to those obtained using the Al–B–C additive 26 …”

“…SiC sintered with the Al–B–C system was reported to have high fracture toughness due to the formation of elongated microstructure 2,29 . Although the same microstructure was reproduced in the present study using Al 3 BC 3 powder as an additive, the fracture toughness was much lower than those reported in Yuan et al 2 and Flinders et al 29 This finding is in agreement of our previous report of the same system in which the Al–B–C system was also used as an additive for comparison 26 . The reason for the fracture toughness discrepancy is presently unknown.…”