Open AccessEffect of Y3Al5O12 addition on the microstructural evaluation and mechanical properties of spark plasma sintered ZrB2-SiC composites
Author(s) -
Kübra Gürcan,
Erhan Ayas,
İlker Yurdabak,
Safa Güngören
Publication year - 2022
Publication title -
science of sintering/science of sintering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 25
eISSN - 1820-7413
pISSN - 0350-820X
DOI - 10.2298/sos2201001g
Subject(s) - spark plasma sintering , materials science , composite material , fracture toughness , sintering , composite number , elastic modulus , microstructure , modulus , relative density , phase (matter) , plasma , chemistry , organic chemistry , physics , quantum mechanics
In the present study, the addition of Y3Al5O12 (YAG) into the ZrB2-SiC composites was investigated. Composites were densified by spark plasma sintering (SPS) at 1850?C under a uniaxial pressure of 50 MPa for 20 min. Microstructural evaluation and mechanical properties were evaluated with a various content of YAG (1-5 wt%). Obtained results showed that sintering mechanism changed from solid state to liquid phase sintering with incorporation of YAG. The highest density (99.81 % RD) and fracture toughness (6.44 ? 0.23 MPa.m1/2) were obtained for the composite containing 5 wt% YAG after the SPS process. Although hardness and elastic modulus of samples were decreased with the increasing of YAG amount, measured values were comparable with the literature.