CN110483030A - 一种5g通信用铁氧体材料及其制备方法 - Google Patents

一种5g通信用铁氧体材料及其制备方法 Download PDF

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CN110483030A
CN110483030A CN201910870130.3A CN201910870130A CN110483030A CN 110483030 A CN110483030 A CN 110483030A CN 201910870130 A CN201910870130 A CN 201910870130A CN 110483030 A CN110483030 A CN 110483030A
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龙克文
胡锦文
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Sanqiaohui Foshan New Material Co ltd
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Abstract

本发明公开了一种5G通信用铁氧体材料及其制备方法,所述5G通信用铁氧体材料包括下述重量份的原料:Y203 36‑38份、Fe203 43‑45份、Gd2O3 6‑9份、MnCO3 0.4‑0.6份、SnO2 0.2‑0.3份;所述5G通信用铁氧体材料的原料还包括1‑1.5重量份烧结助剂,所述烧结助剂包括下述原料:CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3。所述烧结助剂中,CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为(40‑60):(20‑30):(10‑20):(0.02‑0.03):(0.04‑0.05):(5‑10)。本发明制得的铁氧体材料具有低损耗、综合性能高的优点,有利于提高讯号传输的稳定性和器件的小型化、集成化。

Description

一种5G通信用铁氧体材料及其制备方法
技术领域
本发明涉及铁氧体材料技术领域,尤其涉及一种5G通信用铁氧体材料及其制备方法。
背景技术
近年来,随着移动互联网的发展,越来越多的设备接入到移动网络中,新的服务和应用层出不穷,对移动通信网络容量的需求日益增长。第五代移动通信系统5G已经成为通信业和学术界探讨的热点。5G通信要求所用电子材料和电子元器件等具有高频、高速和大容量存储的功能,为了满足对高性能的要求,开发适用于5G的微波材料成为一个重要的研究方向。由于5G对设备小型化、高度集成有较高的要求,而且5G采取更高的频率,对材料的损耗性能也提出了更高的要求,所以开发具有低损耗、综合性能高的5G通信用铁氧体材料具有十分重要的意义。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种5G通信用铁氧体材料及其制备方法,制得的铁氧体材料具有低损耗、综合性能高的优点,有利于提高讯号传输的稳定性和器件的小型化、集成化。
本发明是通过以下技术方案实现的:
一种5G通信用铁氧体材料,包括下述重量份的原料:
Y203 36-38份、Fe203 43-45份、Gd2O3 6-9份、MnCO3 0.4-0.6份、SnO2 0.2-0.3份;
所述5G通信用铁氧体材料的原料还包括1-1.5重量份烧结助剂,所述烧结助剂包括下述原料:CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3
优选地,所述烧结助剂中,CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为(40-60):(20-30):(10-20):(0.02-0.03):(0.04-0.05):(5-10)。
优选地,所述5G通信用铁氧体材料包括下述重量份的原料:
Y203 37份、Fe203 44份、Gd2O3 8份、MnCO3 0.5份、SnO2 0.25份;
所述5G通信用铁氧体材料的原料还包括1.2重量份烧结助剂,所述烧结助剂包括下述原料:CaCO3、SiO2,V2O5、Nb2O5、Ta2O5、Bi2O3,所述CaCO3,SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为50:25:15:0.025:0.045:7.5。
优选地,所述CaCO3、Nb2O5、Ta2O5的粒度为5-8μm,SiO2、V2O5、Bi2O3的粒度为20-50nm。
一种5G通信用铁氧体材料的制备方法,包括下述步骤:
(1)按以下重量份的成分配料:Y203 36-38份、Fe203 43-45份、Gd2O3 6-9份、MnCO30.4-0.6份、SnO2 0.2-0.3份;
(2)将步骤(1)的配料加入球磨机进行一次球磨,然后烘干,在1220-1280℃进行预烧,冷却得到预烧料;
(3)将步骤(2)的预烧料加入球磨机中进行二次球磨,然后烘干,加入1-1.5重量份烧结助剂和2-3重量份粘结剂造粒,过40-60目筛,得到粒料,所述烧结助剂包括CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3,其中CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为(40-60):(20-30):(10-20):(0.02-0.03):(0.04-0.05):(5-10);
(4)将步骤(3)的粒料在50-100MPa下压制成型,得到坯料;
(5)将步骤(4)的坯料进行烧结,冷却后即得5G通信用铁氧体材料。
优选地,所述粘结剂为质量分数为3-5%的聚乙烯醇水溶液。
优选地,所述聚乙烯醇为聚乙烯醇1588、聚乙烯醇1788和聚乙烯醇2088按重量比(2-3):(3-5):(1-1.5)的混合物。
优选地,所述步骤(5)中,烧结的具体条件为:先以0.75-1℃/min的升温速率升温至500-520℃,保温3-4h,然后以1.5-2℃/min的升温速率升温至850-950℃,保温1-2h,最后以2.5-3.5℃/min的升温速率升温至1060-1100℃,保温4-6h。
本发明的优点是:
本发明的原料中,Sn4+可以降低材料的磁晶各向异性,从而降低材料的铁磁共振线宽,增大材料的饱和磁化强度;Mn2+可以取代八面体a位Fe3+,减少导电离子对Fe2+-Fe3+,从而提高晶粒电阻率,降低涡流损耗,但是,Mn2+的添加会导致气孔增加,磁性能下降;Nb2O5、V2O5添加后集中在晶界处,适量的Nb2O5、V2O5配合,能起到晶粒细化、均匀化和致密化的作用,降低晶粒尺寸和涡流损耗,并且降低材料中的气孔率;SiO2、CaCO3、Nb2O5、Ta2O5配合,能在晶界形成高阻层,提高晶界的电阻率,降低涡流损耗;V2O5、Bi2O3配合,还能形成液相烧结,降低烧结温度,提高烧结密度,降低晶粒和晶界间的气孔率。纳米SiO2能阻止Nb、Ca等原子进入铁氧体晶格,促进晶界高阻层的形成,纳米V2O5,Bi2O3具有更高的液相烧结反应活性,从而进一步提高材料的致密性,两者共同作用进一步降低了材料的涡流损耗。通过对原料以及用量的选择,以及烧结助剂粒度的级配,使得到的铁氧体材料具有均匀、细小且致密的晶粒微结构,气孔率低,同时晶粒与晶界的电阻率高,有效降低了铁氧体材料的介电损耗和磁损耗,提高材料的饱和磁化强度。
本发明的工艺中,通过选择合适比例的聚乙烯醇1588、聚乙烯醇1788和聚乙烯醇2088复配作为粘结剂,能有效调节烧结过程中气体的排出速率,避免气体排出过快而增加气孔,从而起到降低气孔率的效果;通过合适的烧结曲线选择,既能调节烧结过程中气体的排出速率,降低气孔率,又能起到晶粒细化、均匀化的作用。通过上述工艺的配合,能更有效地降低气孔率、细化晶粒,从而进一步降低了材料的涡流损耗。
综上所述,本发明通过原料和工艺的配合,能大大降低铁氧体材料的损耗,使制得的铁氧体材料具有低损耗、综合性能高的优点,有利于提高讯号传输的稳定性和器件的小型化、集成化,从而满足5G通信的性能需求。
具体实施方式
实施例1
(1)按以下重量份的成分配料:Y203 36份、Fe203 43份、Gd2O3 6份、MnCO3 0.4份、SnO2 0.2份;
(2)将步骤(1)的配料加入球磨机进行一次球磨,然后烘干,在1220℃进行预烧,冷却得到预烧料;
(3)将步骤(2)的预烧料加入球磨机中进行二次球磨,然后烘干,加入1重量份烧结助剂和2重量份质量分数为3%的聚乙烯醇水溶液造粒,过40目筛,得到粒料,所述烧结助剂包括CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3,其中CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为40:20:10:0.02:0.04:5;
(4)将步骤(3)的粒料在50MPa下压制成型,得到坯料;
(5)将步骤(4)的坯料进行烧结,烧结的具体条件为:先以0.75℃/min的升温速率升温至500℃,保温3h,然后以1.5℃/min的升温速率升温至850℃,保温1h,最后以2.5℃/min的升温速率升温至1060℃,保温4h,冷却后即得5G通信用铁氧体材料。
所述聚乙烯醇为聚乙烯醇1588、聚乙烯醇1788和聚乙烯醇2088按重量比2:3:1的混合物。
实施例2
(1)按以下重量份的成分配料:Y203 37份、Fe203 44份、Gd2O3 8份、MnCO3 0.5份、SnO2 0.25份;
(2)将步骤(1)的配料加入球磨机进行一次球磨,然后烘干,在1260℃进行预烧,冷却得到预烧料;
(3)将步骤(2)的预烧料加入球磨机中进行二次球磨,然后烘干,加入1.2重量份烧结助剂和2.5重量份质量分数为4%的聚乙烯醇水溶液造粒,过50目筛,得到粒料,所述烧结助剂包括CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3,所述CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为50:25:15:0.025:0.045:7.5;
(4)将步骤(3)的粒料在80MPa下压制成型,得到坯料;
(5)将步骤(4)的坯料进行烧结,烧结的具体条件为:先以0.9℃/min的升温速率升温至510℃,保温3.5h,然后以1.8℃/min的升温速率升温至900℃,保温1.5h,最后以3℃/min的升温速率升温至1080℃,保温5h,冷却后即得5G通信用铁氧体材料。
所述聚乙烯醇为聚乙烯醇1588、聚乙烯醇1788和聚乙烯醇2088按重量比2.5:4:1.2的混合物。
实施例3
(1)按以下重量份的成分配料:Y203 38份、Fe203 45份、Gd2O3 9份、MnCO3 0.6份、SnO2 0.3份;
(2)将步骤(1)的配料加入球磨机进行一次球磨,然后烘干,在1280℃进行预烧,冷却得到预烧料;
(3)将步骤(2)的预烧料加入球磨机中进行二次球磨,然后烘干,加入1.5重量份烧结助剂和3重量份质量分数为5%的聚乙烯醇水溶液造粒,过60目筛,得到粒料,所述烧结助剂包括CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3,其中CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为60:30:20:0.03:0.05:10;
(4)将步骤(3)的粒料在100MPa下压制成型,得到坯料;
(5)将步骤(4)的坯料进行烧结,烧结的具体条件为:先以1℃/min的升温速率升温至520℃,保温4h,然后以2℃/min的升温速率升温至950℃,保温2h,最后以3.5℃/min的升温速率升温至1100℃,保温6h,冷却后即得5G通信用铁氧体材料。
所述聚乙烯醇为聚乙烯醇1588、聚乙烯醇1788和聚乙烯醇2088按重量比3:5:1.5的混合物。
将实施例1-3制得的铁氧体材料进行性能测试,测试结果如下表所示:
铁磁共振线宽(Oe) 饱和磁化强度(Gs) 介电损耗
实施例1 19.7 1620 0.62×10<sup>-4</sup>
实施例2 18.5 1644 0.54×10<sup>-4</sup>
实施例3 21.8 1607 0.67×10<sup>-4</sup>
市售铁氧体材料 54.2 1350 2.07×10<sup>-4</sup>

Claims (8)

1.一种5G通信用铁氧体材料,其特征在于,包括下述重量份的原料:
Y203 36-38份、Fe203 43-45份、Gd2O3 6-9份、MnCO3 0.4-0.6份、SnO2 0.2-0.3份;
所述5G通信用铁氧体材料的原料还包括1-1.5重量份烧结助剂,所述烧结助剂包括下述原料:CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3。
2.根据权利要求1所述的一种5G通信用铁氧体材料,其特征在于,所述烧结助剂中,CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为(40-60):(20-30):(10-20):(0.02-0.03):(0.04-0.05):(5-10)。
3.根据权利要求1所述的一种5G通信用铁氧体材料,其特征在于,包括下述重量份的原料:Y203 37份、Fe203 44份、Gd2O3 8份、MnCO3 0.5份、SnO2 0.25份;
所述5G通信用铁氧体材料的原料还包括1.2重量份烧结助剂,所述烧结助剂包括下述原料:CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3,所述CaCO3,SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为50:25:15:0.025:0.045:7.5。
4.根据权利要求1所述的一种5G通信用铁氧体材料,其特征在于,所述CaCO3、Nb2O5、Ta2O5的粒度为5-8μm,SiO2、V2O5、Bi2O3的粒度为20-50nm。
5.根据权利要求1所述的一种5G通信用铁氧体材料的制备方法,其特征在于,包括下述步骤:
(1)按以下重量份的成分配料:Y203 36-38份、Fe203 43-45份、Gd2O3 6-9份、MnCO30.4-0.6份、SnO2 0.2-0.3份;
(2)将步骤(1)的配料加入球磨机进行一次球磨,然后烘干,在1220-1280℃进行预烧,冷却得到预烧料;
(3)将步骤(2)的预烧料加入球磨机中进行二次球磨,然后烘干,加入1-1.5重量份烧结助剂和2-3重量份粘结剂造粒,过40-60目筛,得到粒料,所述烧结助剂包括CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3,其中CaCO3、SiO2、V2O5、Nb2O5、Ta2O5、Bi2O3的重量比为(40-60):(20-30):(10-20):(0.02-0.03):(0.04-0.05):(5-10);
(4)将步骤(3)的粒料在50-100MPa下压制成型,得到坯料;
(5)将步骤(4)的坯料进行烧结,冷却后即得5G通信用铁氧体材料。
6.根据权利要求5所述的一种5G通信用铁氧体材料的制备方法,其特征在于,所述粘结剂为质量分数为3-5%的聚乙烯醇水溶液。
7.根据权利要求6所述的一种5G通信用铁氧体材料的制备方法,其特征在于,所述聚乙烯醇为聚乙烯醇1588、聚乙烯醇1788和聚乙烯醇2088按重量比(2-3):(3-5):(1-1.5)的混合物。
8.根据权利要求5所述的一种5G通信用铁氧体材料的制备方法,其特征在于,所述步骤(5)中,烧结的具体条件为:先以0.75-1℃/min的升温速率升温至500-520℃,保温3-4h,然后以1.5-2℃/min的升温速率升温至850-950℃,保温1-2h,最后以2.5-3.5℃/min的升温速率升温至1060-1100℃,保温4-6h。
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