CN107867859A - Li0.8Mg4.1V3O12微波介质陶瓷的制备方法 - Google Patents

Li0.8Mg4.1V3O12微波介质陶瓷的制备方法 Download PDF

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CN107867859A
CN107867859A CN201610841899.9A CN201610841899A CN107867859A CN 107867859 A CN107867859 A CN 107867859A CN 201610841899 A CN201610841899 A CN 201610841899A CN 107867859 A CN107867859 A CN 107867859A
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施海月
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Abstract

本申请公开了一种Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,包括:(1)、以Li2CO3、MgO、NH4VO3为原料进行混料;(2)、一次球磨;(3)、烘干、过筛;(4)、预烧;(5)、二次球磨;(6)、烘干、过筛;(7)造粒;(8)、干压成型:将造粒好的陶瓷粉料压制成圆柱形陶瓷生坯或圆片;(9)、烧结:在550℃排胶1小时,然后按照3~5℃/min速率升至850℃保温4小时;(10)、冷却至室温。本发明通过Li取代Mg可以明显的降低材料的烧结温度,陶瓷的介电性能得到明显优化,其微波介电性能为:介电常数=13,品质因数=22000GHz,温度系数=2ppm/℃。

Description

Li0.8Mg4.1V3O12微波介质陶瓷的制备方法
技术领域
本申请属于通信技术领域,特别是涉及一种Li0.8Mg4.1V3O12微波介质陶瓷的制备方法。
背景技术
微波介质陶瓷是指应用于微波频段电路中作为介质材料并完成一种或多种功能的陶瓷,是近三十年迅速发展起来的新型功能陶瓷,被广泛应用于介质谐振器、介质滤波器、双工器、微波介质天线、介质稳频振荡器、介质波导传输线等微波器件。作为微波通讯中的关键材料,微波介质陶瓷的各项性能在很大程度上决定了整体现代通信技术系统的性能。因此开发高品质的微波介质陶瓷是整个微波通讯的关键工作。
发明内容
本发明的目的在于提供一种Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,以克服现有技术中的不足。
为实现上述目的,本发明提供如下技术方案:
本申请实施例公开一种Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,包括:
(1)、以Li2CO3、MgO、NH4VO3为原料进行混料;
(2)、一次球磨:将按配方称好的原始粉料放入聚氨酯球磨罐中,以无水乙醇作为球磨介质,氧化锆为磨球,利用变频式行星球磨机球磨,球磨转速365rpm,按照原料:磨球:无水乙醇=1:2:1比例球磨3小时;
(3)、烘干、过筛:将球磨后浆料在真空干燥箱中进行干燥,干燥温度80~100℃,干燥时间20min,干燥完成后采用100目的筛子过筛;
(4)、预烧;
(5)、二次球磨:将预烧的料放入聚氨酯球磨罐中,以无水乙醇作为球磨介质,氧化锆为磨球,利用变频式行星球磨机球磨,球磨转速365rpm,按照原料:磨球:无水乙醇=1:2:1比例球磨3小时;
(6)、烘干、过筛:将二次球磨后浆料在干燥箱中进行干燥,干燥温度100℃,干燥时间20min,干燥完成后采用60目的筛子过筛,获得陶瓷粉料;
(7)造粒;
(8)、干压成型:将造粒好的陶瓷粉料压制成圆柱形陶瓷生坯或圆片;
(9)、烧结:在550℃排胶1小时,然后按照3~5℃/min速率升至850℃保温4小时;
(10)、冷却至室温。
优选的,在上述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法中,所述步骤(4)中,预烧具体包括:在氧化铝坩埚中于750℃预烧3小时。
优选的,在上述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法中,所述步骤(7)中,造粒包括:在陶瓷粉料中加入5wt%的聚乙烯醇作为粘结剂进行造粒。
优选的,在上述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法中,所述步骤(8)中,将造粒好的陶瓷粉料在70MPa的压力下压制成圆柱形陶瓷生坯或圆片。
优选的,在上述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法中,所述步骤(10)中,冷却至室温包括:首先以1℃/min的速率降到700℃,再以100℃/小时的速率降到500℃,然后自然冷却至常温。
与现有技术相比,本发明的优点在于:本发明通过Li取代Mg可以明显的降低材料的烧结温度,陶瓷的介电性能得到明显优化,其微波介电性能为:介电常数=13,品质因数=22000GHz,温度系数=2ppm/℃。
具体实施方式
本发明通过下列实施例作进一步说明:根据下述实施例,可以更好地理解本发明。然而,本领域的技术人员容易理解,实施例所描述的具体的物料比、工艺条件及其结果仅用于说明本发明,而不应当也不会限制权利要求书中所详细描述的本发明。
本实施例中,Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,包括:
(1)、以Li2CO3、MgO、NH4VO3为原料进行混料;
(2)、一次球磨:将按配方称好的原始粉料放入聚氨酯球磨罐中,以无水乙醇作为球磨介质,氧化锆为磨球,利用变频式行星球磨机球磨,球磨转速365rpm,按照原料:磨球:无水乙醇=1:2:1比例球磨3小时;
(3)、烘干、过筛:将球磨后浆料在真空干燥箱中进行干燥,干燥温度80~100℃,干燥时间20min,干燥完成后采用100目的筛子过筛;
(4)、预烧:在氧化铝坩埚中于750℃预烧3小时;
(5)、二次球磨:将预烧的料放入聚氨酯球磨罐中,以无水乙醇作为球磨介质,氧化锆为磨球,利用变频式行星球磨机球磨,球磨转速365rpm,按照原料:磨球:无水乙醇=1:2:1比例球磨3小时;
(6)、烘干、过筛:将二次球磨后浆料在干燥箱中进行干燥,干燥温度100℃,干燥时间20min,干燥完成后采用60目的筛子过筛,获得陶瓷粉料;
(7)造粒:在陶瓷粉料中加入5wt%的聚乙烯醇作为粘结剂进行造粒;
(8)、干压成型:将造粒好的陶瓷粉料在70MPa的压力下压制成圆柱形陶瓷生坯或圆片;
(9)、烧结:在550℃排胶1小时,然后按照3~5℃/min速率升至850℃保温4小时;
(10)、冷却至室温:首先以1℃/min的速率降到700℃,再以100℃/小时的速率降到500℃,然后自然冷却至常温。
本发明通过Li取代Mg可以明显的降低材料的烧结温度,陶瓷的介电性能得到明显优化,其微波介电性能为:介电常数=13,品质因数=22000GHz,温度系数=2ppm/℃。
最后,还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。

Claims (5)

1.一种Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,其特征在于,包括:
(1)、以Li2CO3、MgO、NH4VO3为原料进行混料;
(2)、一次球磨:将按配方称好的原始粉料放入聚氨酯球磨罐中,以无水乙醇作为球磨介质,氧化锆为磨球,利用变频式行星球磨机球磨,球磨转速365rpm,按照原料:磨球:无水乙醇=1:2:1比例球磨3小时;
(3)、烘干、过筛:将球磨后浆料在真空干燥箱中进行干燥,干燥温度80~100℃,干燥时间20min,干燥完成后采用100目的筛子过筛;
(4)、预烧;
(5)、二次球磨:将预烧的料放入聚氨酯球磨罐中,以无水乙醇作为球磨介质,氧化锆为磨球,利用变频式行星球磨机球磨,球磨转速365rpm,按照原料:磨球:无水乙醇=1:2:1比例球磨3小时;
(6)、烘干、过筛:将二次球磨后浆料在干燥箱中进行干燥,干燥温度100℃,干燥时间20min,干燥完成后采用60目的筛子过筛,获得陶瓷粉料;
(7)造粒;
(8)、干压成型:将造粒好的陶瓷粉料压制成圆柱形陶瓷生坯或圆片;
(9)、烧结:在550℃排胶1小时,然后按照3~5℃/min速率升至850℃保温4小时;
(10)、冷却至室温。
2.根据权利要求1所述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,其特征在于:所述步骤(4)中,预烧具体包括:在氧化铝坩埚中于750℃预烧3小时。
3.根据权利要求1所述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,其特征在于:所述步骤(7)中,造粒包括:在陶瓷粉料中加入5wt%的聚乙烯醇作为粘结剂进行造粒。
4.根据权利要求1所述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,其特征在于:所述步骤(8)中,将造粒好的陶瓷粉料在70MPa的压力下压制成圆柱形陶瓷生坯或圆片。
5.根据权利要求1所述的Li0.8Mg4.1V3O12微波介质陶瓷的制备方法,其特征在于:所述步骤(10)中,冷却至室温包括:首先以1℃/min的速率降到700℃,再以100℃/小时的速率降到500℃,然后自然冷却至常温。
CN201610841899.9A 2016-09-22 2016-09-22 Li0.8Mg4.1V3O12微波介质陶瓷的制备方法 Pending CN107867859A (zh)

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CN113024249A (zh) * 2021-03-29 2021-06-25 三峡大学 微波介质陶瓷复合材料及制备方法
CN113579861A (zh) * 2021-07-05 2021-11-02 广东风华高新科技股份有限公司 一种ltcc片式陶瓷滤波器的倒角方法

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