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tcb2002315至尊木虫 (著名写手)
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[交流]
【求助】低温烧结微波介质陶瓷助烧剂（扔钱了大家都来参加啊）
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求助Ba6-3xR8+2xTi18O54微波介质陶瓷低温烧结助剂,要求有效的烧结助剂，用最低的量降最多温度的那种，最好是掺杂量小于10%， 希望大家不吝赐教，谢谢大家！！！ [ Last edited by tcb2002315 on 2008-9-26 at 17:43 ] |
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For your reference
★
tcb2002315(金币+1,VIP+0):这个我试过，没什么鸟用，这样的我都有，我都看过，不过还是谢谢你的热心
tcb2002315(金币+1,VIP+0):这个我试过，没什么鸟用，这样的我都有，我都看过，不过还是谢谢你的热心
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Journal of Alloys and Compounds xxx (2008) xxx–xxx Influence of glass additives on the sintering behavior and dielectric properties of BaO·(Nd0.8Bi0.2)2O3·4TiO2 ceramics Hsing-I. Hsiang ∗, Tai-How Chen Particulate Materials Research Center, Department of Resources Engineering, National Cheng Kung University, Tainan, Taiwan, ROC Received 19 October 2007; received in revised form 5 December 2007; accepted 6 December 2007 Abstract Effects of various glasses (Bi2O3–B2O3–ZnO–SiO2 (BBXSZ, where X = the mole fraction of Bi2O3 in the glass) glasses with different Bi2O3 content) on both the sintering behavior and microwave dielectric properties of BaO·(Nd1−xBix)2O3·4TiO2 (BNBT) ceramics were investigated in developing low-temperature-fired dielectric ceramics for microwave devices. Glass wetting characteristics on the BNBT surface, X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and a dilatometer were used to examine the effect of various glasses on BNBT densification and the chemical reaction between the glass and BNBT. The results indicate that BB25SZ glass can be used as a sintering aid to reduce the densification temperature of BNBT from 1300 to 900 ◦C without secondary phase formation. BNBT ceramics with 20 wt.% BB25SZ glass sintered at 900 ◦C show a relative density of 92%, a high-dielectric-constant of 84, a quality factor (Qxf) of 2999, and a temperature coefficient of resonant frequency of 23.7 ppm/◦C. |
14楼2008-10-24 11:24:39
tcb2002315
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2楼2008-09-26 17:42:12
jiamaolee
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3楼2008-09-26 18:52:35
tcb2002315
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4楼2008-09-26 18:58:09
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