电子元件与材料
電子元件與材料
전자원건여재료
ELECTRONIC COMPONENTS & MATERIALS
2015年
6期
8-10,27
,共4页
黄芳%谢文涛%祁宏庆%钱磊%钱怡潇%周洪庆
黃芳%謝文濤%祁宏慶%錢磊%錢怡瀟%週洪慶
황방%사문도%기굉경%전뢰%전이소%주홍경
Mg2TiO4%MgO%微观结构%介电常数%品质因数%温度系数
Mg2TiO4%MgO%微觀結構%介電常數%品質因數%溫度繫數
Mg2TiO4%MgO%미관결구%개전상수%품질인수%온도계수
Mg2TiO4%MgO%microstructure%dielectric constant%quality factor%temperature coefficient
借助典型的固相反应烧结机制,研究了MgO含量对微波高品质因数瓷介材料微观结构与介电性能参数影响的规律。结果表明:高温烧结的镁钛系瓷介质中,随着MgO含量增加,Mg 2 TiO 4晶相的含量逐渐降低、瓷体晶粒由尖晶石型演变为氯化钠型结构,对应的微波介电常数出现缓慢降低,在10.10~13.37范围连续可调。当x=16时,在1525℃/2 h烧成,可获得性能优良的(2+x)MgO-TiO2陶瓷,其ρ=3.49g·cm–3,εr=10.37,Q·f=118747 GHz(f=10.47 GHz),τf=–53.35×10–6℃–1。
藉助典型的固相反應燒結機製,研究瞭MgO含量對微波高品質因數瓷介材料微觀結構與介電性能參數影響的規律。結果錶明:高溫燒結的鎂鈦繫瓷介質中,隨著MgO含量增加,Mg 2 TiO 4晶相的含量逐漸降低、瓷體晶粒由尖晶石型縯變為氯化鈉型結構,對應的微波介電常數齣現緩慢降低,在10.10~13.37範圍連續可調。噹x=16時,在1525℃/2 h燒成,可穫得性能優良的(2+x)MgO-TiO2陶瓷,其ρ=3.49g·cm–3,εr=10.37,Q·f=118747 GHz(f=10.47 GHz),τf=–53.35×10–6℃–1。
차조전형적고상반응소결궤제,연구료MgO함량대미파고품질인수자개재료미관결구여개전성능삼수영향적규률。결과표명:고온소결적미태계자개질중,수착MgO함량증가,Mg 2 TiO 4정상적함량축점강저、자체정립유첨정석형연변위록화납형결구,대응적미파개전상수출현완만강저,재10.10~13.37범위련속가조。당x=16시,재1525℃/2 h소성,가획득성능우량적(2+x)MgO-TiO2도자,기ρ=3.49g·cm–3,εr=10.37,Q·f=118747 GHz(f=10.47 GHz),τf=–53.35×10–6℃–1。
The effect of MgO content on microstructure and dielectric properties of highQ ceramics were studied. Samples were prepared by solid state reaction. The results show that with the increase amount of MgO, Mg2TiO4 crystal content reduces and some particles of sodium chloride structure replace spinel ones. Corresponding with this, adjustableεr decrease slowly from 13.37 to 10.10. Sintered at 1 525℃ for 2 h, the dielectric properties of (2+x)MgO-TiO2(x=16) ceramics are more excellent:ρ=3.49 g·cm–3,εr=10.37,Q·f=118 747 GHz(f=10.47 GHz),τf=–53.35×10–6℃–1.