Laser synthesis of Al2TiO5 and Y3Al5O12 ceramics from powder mixtures Al2O3-TiO2 and Al2O3-Y2O3

Science of Sintering

关键词: Al2O3;    TiO2;    Y2O3;    laser treatment;    α-, β-Al2TiO5;    α-Al2O3;    Y3Al5O12;   

DOI  :  10.2298/SOS1201017V

来源: DOAJ

【 摘 要 】

The phase formation process in the zone of laser irradiation of 60 wt.%Al2O3-40 wt.% TiO2 and 60 wt.% Al2O3- 40 wt.% Y2O3 compacts has beeninvestigated by the XRD, electron microscopy, and atomic force microscopymethods. In the laser irradiation zone the ceramic track is formed. Due to nouniformity of heating of the powder mixture Al2O3-TiO2 the ceramic trackconsists of a surface layer of the α-Al2TiO5 and the bulk layer from the β-Al2TiO5. Ceramic track formed during irradiation of Al2O3-Y2O3 mixtureconsists of a surface amorphous layer of Y3Al5O12 with inclusions of α-Al2O3domains and the bulk layer consisting of a mixture of dendrites α-Al2O3 andY3Al5O12.

【 授权许可】

Unknown