激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2011年
5期
32-34
,共3页
田得雨%晁明举%张俊吉%李明玉%钱华丽
田得雨%晁明舉%張俊吉%李明玉%錢華麗
전득우%조명거%장준길%리명옥%전화려
激光烧结%高频介质陶瓷%CaTiO3-CaTiSiO5%介电性能
激光燒結%高頻介質陶瓷%CaTiO3-CaTiSiO5%介電性能
격광소결%고빈개질도자%CaTiO3-CaTiSiO5%개전성능
Laser sintering%High- frequency dielectric ceramics%CaTiO3 - CaTiSi05%dielectric properties
采用激光烧结技术成功制备致密、高介电常数的CaTiO3-CaTiSiO5高频介质陶瓷。使用X射线衍射仪、扫描电子显微镜分析样品的晶相组成和显微组织，利用精密阻抗分析仪测试陶瓷样品的介电性能。结果表明，激光烧结CaTiO3-CaTiSiO5介质陶瓷致密、介电常数（εr=376）高达固相烧结样品的5倍，这应归因于激光烧结CaTiO3-CaTiSiO5介质陶瓷的特殊晶相结构——逆热流方向择优生长、尺寸达数μm的定向排列结构。
採用激光燒結技術成功製備緻密、高介電常數的CaTiO3-CaTiSiO5高頻介質陶瓷。使用X射線衍射儀、掃描電子顯微鏡分析樣品的晶相組成和顯微組織，利用精密阻抗分析儀測試陶瓷樣品的介電性能。結果錶明，激光燒結CaTiO3-CaTiSiO5介質陶瓷緻密、介電常數（εr=376）高達固相燒結樣品的5倍，這應歸因于激光燒結CaTiO3-CaTiSiO5介質陶瓷的特殊晶相結構——逆熱流方嚮擇優生長、呎吋達數μm的定嚮排列結構。
채용격광소결기술성공제비치밀、고개전상수적CaTiO3-CaTiSiO5고빈개질도자。사용X사선연사의、소묘전자현미경분석양품적정상조성화현미조직，이용정밀조항분석의측시도자양품적개전성능。결과표명，격광소결CaTiO3-CaTiSiO5개질도자치밀、개전상수（εr=376）고체고상소결양품적5배，저응귀인우격광소결CaTiO3-CaTiSiO5개질도자적특수정상결구——역열류방향택우생장、척촌체수μm적정향배렬결구。
High- frequency dielectric ceramics CaTi03 - CaTiSiO5 with high dielectric constant was successfully prepared by laser sintering. The mierastructure observation and phase analysis of the CaTiO3 - CaTiSiO5 ceramics were performed by a scanning electron microscopy and X - ray diffiractometer. And the dielectric property was measured by precision impedance analyzer. The results show that the CaTiO3 - CaTiSiO5 ceramics by laser sintering has high dielectric constant （ εr = 376 ）, which is as high as 5 times that of one sintered with a furnace. This could be attributed to the CaTiO3 - CaTiSiO5 by laser sintering possesses a special mierostructure, namely an oriented dendrites growing against the heat exchange, which size can be hundreds of micron.
