Effect of Y3Al5O12 addition on the microstructural evaluation and mechanical properties of spark plasma sintered ZrB2-SiC composites | Zendy

Kübra Gürcan Bayrak | Zendy; Erhan Ayas | Zendy; İlker Yurdabak | Zendy; Safa Güngören | Zendy

Open Access

Effect of Y3Al5O12 addition on the microstructural evaluation and mechanical properties of spark plasma sintered ZrB2-SiC composites

Author(s) -

Kübra Gürcan Bayrak,

Erhan Ayas,

İlker Yurdabak,

Safa Güngören

Publication year - 2022

Publication title -

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.

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