Pressureless sintering of TiN/Y-(alpha/beta)-sialon ceramics from SHS powder

摘要

TiN/Y-(alpha/beta)-sialon ceramics with good mechanical properties were successfully obtained by pressureless sintering from SHS powder. XRD results showed the main phases of SHS powder to be a-sialon (68.5 wt. percent) and beta-sialon (29.3 wt. percent). The microhardness, flexural strength and fracture toughness of the pressureless densified sialon ceramic reached 14.22 GPa, 651 MPa and 5.09 MPa m~(1/2), respectively.