Investigation on laser sintering of Bi4Ti3O12 ceramics - Details

Author：

Gao, Yi (Gao, Yi.) | Ji, Lingfei (Ji, Lingfei.) (Scholars：季凌飞) | Jiang, Yijian (Jiang, Yijian.) (Scholars：蒋毅坚)

Indexed by：

EI Scopus PKU CSCD

Abstract：

The　investigation　on　laser　sintering　of　Bi4Ti3O12　ceramics　is　reported.　The　green　patch　of　Bi4Ti3O12　ceramic　was　sintered　by　a　CO2　laser,　with　power　density　2030　W/cm2　and　sintering　temperature　around　1000C.　Compared　with　that　sintered　by　conventional　solid-state　reaction　technique,　the　density　of　Bi4Ti3O12　ceramic　sintered　by　laser　is　higher,　reaches　95%　of　the　theoretical　one,　the　piezoelectric　constant　was　increased　by　60%,　the　decrease　of　coercive　field　and　easier　polarization　indicated　that　the　enhancement　of　the　ferroelectric　properties.　By　using　the　X-ray　diffraction　(XRD),　scanning　electron　microscope　(SEM),　the　phase,　microstructure,　and　the　mechanism　of　property　modification　in　laser　sintered　Bi4Ti3O12　ceramics　were　analyzed.　It＇s　indicated　that　the　measure　of　laser　sintering　could　be　regarded　as　one　of　the　ways　to　sinter　the　functional　ceramics.

Keyword：

Ferroelectricity Carbon dioxide lasers Bismuth compounds Solid state reactions Scanning electron microscopy Laser heating Ferroelectric ceramics Titanium compounds Sintering

Author Community：

[ 1 ] [Gao, Yi]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Ji, Lingfei]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Jiang, Yijian]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China