ZnO–B_2O_3掺杂BaAl_2Si_2O_8陶瓷的结构及微波介电性能
|
摘要
采用固相反应法制备BaAl_2Si_2O_8–x%ZnO–B_2O_3(x=0,1,2,3,4,质量分数)陶瓷。探究了不同含量的ZnO–B_2O_3(ZB)烧结助剂对BaAl_2Si_2O_8(BAS)陶瓷的烧结温度、结构及微波介电性能的影响。结果表明:ZB烧结助剂可降低BAS陶瓷的烧结温度。并且能够促进BAS晶体结构由六方相转变为单斜相,当x=1时,六方相BAS全部转变为单斜相BAS,并且ZB烧结助剂添加量在4%以内,无第二相生成。添加1%的ZB烧结助剂可促进样品晶粒长大,密度、介电常数和品质因数增大,谐振频率温度系数的绝对值减小。在x=1,烧结温度为1 350℃时,能够获得品质因数较高的单斜相BAS,其介电性能为:ε_r=6.45,Q×f=40 608 GHz,τf=–22.46×10~(–6) K~(–1)。
BaAl_2Si_2O_8 ceramics with a samll amount of ZnO–B_2O_3(ZB)as sintering additives were prepared by solid-state sintering.The sintering temperature,structure and microwave dielectric properties of BaAl_2Si_2O_8(BAS)with ZB were investigated.The results show that the ZB sintering additives can reduce the sintering temperature and promote the transition of crystal structure of BAS.As x=1,all the hexacelsian transforms into celsian,and the second phase does not appear as x≤4.The sintering additives of 1% ZB can promote the grain growth,increase the bulk density,dielectric constant and Q×f value,and decrease the absolute value of τ_f.The BAS with 1% ZB sintered at 1 350℃shows a high Q×f of 40 608 GHz,and the dielectric properties are ε_r=6.45 and τ_f=–22.46×10~(–6 )K~(–1).
BaAl_2Si_2O_8 ceramics with a samll amount of ZnO–B_2O_3(ZB)as sintering additives were prepared by solid-state sintering.The sintering temperature,structure and microwave dielectric properties of BaAl_2Si_2O_8(BAS)with ZB were investigated.The results show that the ZB sintering additives can reduce the sintering temperature and promote the transition of crystal structure of BAS.As x=1,all the hexacelsian transforms into celsian,and the second phase does not appear as x≤4.The sintering additives of 1% ZB can promote the grain growth,increase the bulk density,dielectric constant and Q×f value,and decrease the absolute value of τ_f.The BAS with 1% ZB sintered at 1 350℃shows a high Q×f of 40 608 GHz,and the dielectric properties are ε_r=6.45 and τ_f=–22.46×10~(–6 )K~(–1).
引文
[1]SONG X Q,LU W Z,WANG X C,et al.Sintering behaviour and microwave dielectric properties of BaAl2-2x(ZnSi)x Si2O8 ceramics[J].JEur Ceram Soc,2018,38(4):1529-1534.
[2]LANSMANN V,JANSEN M.Application of the glass-ceramic process for the fabrication of whisker reinforced celsian-composites[J].J Mater Sci,2001,36(6):1531-1538.
[3]BAHAT D.Kinetic study on the hexacelsian-celsian phase transformation[J].J Mater Sci,1970,5(9):805-810.
[4]YOSHIKI B,MATSUMOTO K.High-Temperature modification of barium feldspar[J].J Am Ceram Soc,1951,34(9):283-286.
[5]YANG X J,ZHANG Y,DING S H,et al.Structure and dielectric properties of Ca doped BaAl2Si2O8[J].Ceram Int,2018,44:S43-S45.
[6]CHEN M,LEE W E,JAMES P F.Synthesis of monoclinic celsian glass-ceramic from alkoxides[J].J Non-Cryst Solids,1992,147:532-536.
[7]HAN L C,DING S H,SONG T X,et al.ZBAS on the structure and dielectric property of Ba Al2Si2O8[J].J Inorg Mater,2018,33(8):883-888.
[8]KIM J R,KIM D W,CHO I S,et al.Low temperature sintering and microwave dielectric properties of Ba3Ti5Nb6O28 with ZnO-B2O3 glass additions for LTCC applications[J].J Eur Ceram Soc,2007,27(8-9):3075-3079.
[9]LEE Y C,LEEB W H,SHIEUC F S.Microwave dielectric properties and microstructures of Ba2Ti9O20-based ceramics with 3ZnO-B2O3addition[J].J Eur Ceram Soc,2005,25(15):3459-3468.
[10]KIM D W,LEE D G,HONG K S.Low-temperature firing and microwave dielectric properties of Ba Ti4O9 with Zn-B-O glass system[J].Mater Res Bull,2001,36(3-4):585-595.
[11]YANG H,LI E,YANG H,et al.Synthesis of Zn0.5Ti0.5NbO4microwave dielectric ceramics with Li2O-B2O3-SiO2 glass for LTCCapplication[J].Int J Appl Glass Sci,2018,9(3):392-402.
[12]SHIH Y T,JEAN J H.Low-fire processing of microwave(Ca1-x Srx)(Zr1-y Mny)O3 dielectric with Li2O-B2O3-SiO2 glass in H2/N2[J].Ceram Int,2017,43:S306-S311.
[13]YOON K H,PARK M S,CHO J Y,et al.Effect of B2O3-Li2O on microwave dielectric properties of(Ca0.275Sm0.4Li0.25)TiO3 ceramics[J].J Eur Ceram Soc,2003,23(14):2423-2427.
[14]LEE K T,ASWATH P B.Role of mineralizers on the hexacelsian to celsian transformation in the barium aluminosilicate(BAS)system[J].Mater Sci Eng A,2003,352(1):1-7.
[15]HYATT M J,BANSAL N P.Crystal growth kinetics in BaOAl2O3·2Si O2and SrOAl2O3·2SiO2 glasses[J].J Mater Sci,1996,31(1):172-184.
[16]LI E,NIU N,WANG J,et al.Effect of Li-B-Si glass on the low temperature sintering behaviors and microwave dielectric properties of the Li-modified ss-phase Li2O-Nb2O5-TiO2 ceramics[J].J Mater Sci:Mater Electron,2015,26(5):3330-3335.
[17]ZHANG S,SU H,ZHANG H,et al.Microwave dielectric properties of Ca WO4-Li2Ti O3 ceramics added with LBSCA glass for LTCCapplications[J].Ceram Int,2016,42(14):15242-15246.
[18]KIM J R,KIM D W,JUNG H S,et al.Low-temperature sintering and microwave dielectric properties of Ba5Nb4O15 with ZnB2O4 glass[J].JEur Ceram Soc,2006,26(10-11):2105-2109.
[2]LANSMANN V,JANSEN M.Application of the glass-ceramic process for the fabrication of whisker reinforced celsian-composites[J].J Mater Sci,2001,36(6):1531-1538.
[3]BAHAT D.Kinetic study on the hexacelsian-celsian phase transformation[J].J Mater Sci,1970,5(9):805-810.
[4]YOSHIKI B,MATSUMOTO K.High-Temperature modification of barium feldspar[J].J Am Ceram Soc,1951,34(9):283-286.
[5]YANG X J,ZHANG Y,DING S H,et al.Structure and dielectric properties of Ca doped BaAl2Si2O8[J].Ceram Int,2018,44:S43-S45.
[6]CHEN M,LEE W E,JAMES P F.Synthesis of monoclinic celsian glass-ceramic from alkoxides[J].J Non-Cryst Solids,1992,147:532-536.
[7]HAN L C,DING S H,SONG T X,et al.ZBAS on the structure and dielectric property of Ba Al2Si2O8[J].J Inorg Mater,2018,33(8):883-888.
[8]KIM J R,KIM D W,CHO I S,et al.Low temperature sintering and microwave dielectric properties of Ba3Ti5Nb6O28 with ZnO-B2O3 glass additions for LTCC applications[J].J Eur Ceram Soc,2007,27(8-9):3075-3079.
[9]LEE Y C,LEEB W H,SHIEUC F S.Microwave dielectric properties and microstructures of Ba2Ti9O20-based ceramics with 3ZnO-B2O3addition[J].J Eur Ceram Soc,2005,25(15):3459-3468.
[10]KIM D W,LEE D G,HONG K S.Low-temperature firing and microwave dielectric properties of Ba Ti4O9 with Zn-B-O glass system[J].Mater Res Bull,2001,36(3-4):585-595.
[11]YANG H,LI E,YANG H,et al.Synthesis of Zn0.5Ti0.5NbO4microwave dielectric ceramics with Li2O-B2O3-SiO2 glass for LTCCapplication[J].Int J Appl Glass Sci,2018,9(3):392-402.
[12]SHIH Y T,JEAN J H.Low-fire processing of microwave(Ca1-x Srx)(Zr1-y Mny)O3 dielectric with Li2O-B2O3-SiO2 glass in H2/N2[J].Ceram Int,2017,43:S306-S311.
[13]YOON K H,PARK M S,CHO J Y,et al.Effect of B2O3-Li2O on microwave dielectric properties of(Ca0.275Sm0.4Li0.25)TiO3 ceramics[J].J Eur Ceram Soc,2003,23(14):2423-2427.
[14]LEE K T,ASWATH P B.Role of mineralizers on the hexacelsian to celsian transformation in the barium aluminosilicate(BAS)system[J].Mater Sci Eng A,2003,352(1):1-7.
[15]HYATT M J,BANSAL N P.Crystal growth kinetics in BaOAl2O3·2Si O2and SrOAl2O3·2SiO2 glasses[J].J Mater Sci,1996,31(1):172-184.
[16]LI E,NIU N,WANG J,et al.Effect of Li-B-Si glass on the low temperature sintering behaviors and microwave dielectric properties of the Li-modified ss-phase Li2O-Nb2O5-TiO2 ceramics[J].J Mater Sci:Mater Electron,2015,26(5):3330-3335.
[17]ZHANG S,SU H,ZHANG H,et al.Microwave dielectric properties of Ca WO4-Li2Ti O3 ceramics added with LBSCA glass for LTCCapplications[J].Ceram Int,2016,42(14):15242-15246.
[18]KIM J R,KIM D W,JUNG H S,et al.Low-temperature sintering and microwave dielectric properties of Ba5Nb4O15 with ZnB2O4 glass[J].JEur Ceram Soc,2006,26(10-11):2105-2109.