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Science of Sintering
Effect Ga 2 O 3 addition on the densification and properties of Y 2 O 3 -doped AlN ceramics was investigated under the constraint of total sintering additives (Y 2 O 3 and Ga 2 O 3 ) of 4.5 wt%. Ga was detected in the AlN grain as well as the grain boundary phases. YAlO 3 and Y 4 Al 2 O 9 were observed as the secondary crystalline phases in all of the investigated compositions. As the substitution of Ga 2 O 3 for Y 2 O 3 increased, the quantity of the Y 4 Al 2 O 9 phase decreased while that ofdoi:10.2298/sos1501023s fatcat:b55vlgtdxrao5ormslwauirro4