Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multiphase microwave dielectric ceramic material and preparation method thereof
The invention belongs to the technical field of materials, and particularly relates to a multiphase microwave dielectric ceramic material and a preparation method thereof. Aluminum oxide whiskers aredoped in a composite ceramic main body, and the aluminum oxide whiskers have high mechanical strength and high elastic modulus, so that the aluminum oxide whiskers are properly added into the composite ceramic main body to achieve reinforcing and toughening effects, and the bending strength and thermal shock resistance of the composite ceramic main body can be greatly improved. The multiphase microwave dielectric ceramic material provided by the invention has good comprehensive performance, the dielectric constant [epsilon]r is 30-50, the temperature coefficient [tau]f of resonance frequency at the temperature of -40 DEG C-85 DEG C is +/-10 ppm/DEG C, the quality factor Qf is greater than or equal to 40000, the bending strength is greater than or equal to 200 MPa, the thermal shock temperature is 110 DEG C, the reliability is stronger, and the requirement of miniaturization development of dielectric resonators, filters and other microwave components can be met; and the multiphase microwave dielectric ceramic material can adapt to severe working environments such as large day and night temperature difference, and has a good application prospect.
本发明属于材料技术领域，具体涉及一种复相微波介质陶瓷材料及其制备方法。本发明通过在复相陶瓷主体中掺杂氧化铝晶须，由于氧化铝晶须具有较高的机械强度和较高的弹性模量，将其适量加入复相陶瓷主体中具有补强增韧的作用，可极大地改善复相陶瓷主体的抗弯强度和抗热震性能。本发明提供的复相微波介质陶瓷材料具有良好的综合性能，其介电常数εr为30‑50，在‑40℃～85℃下的谐振频率温度系数τf为±10ppm/℃，品质因数Qf≥40000，抗弯强度≥200MPa，热震温度为110℃，可靠性更强，可满足介质谐振器与滤波器等微波元器件向小型化发展的要求，还能够适应昼夜温差大等恶劣的工作环境，具有良好的应用前景。
Multiphase microwave dielectric ceramic material and preparation method thereof
The invention belongs to the technical field of materials, and particularly relates to a multiphase microwave dielectric ceramic material and a preparation method thereof. Aluminum oxide whiskers aredoped in a composite ceramic main body, and the aluminum oxide whiskers have high mechanical strength and high elastic modulus, so that the aluminum oxide whiskers are properly added into the composite ceramic main body to achieve reinforcing and toughening effects, and the bending strength and thermal shock resistance of the composite ceramic main body can be greatly improved. The multiphase microwave dielectric ceramic material provided by the invention has good comprehensive performance, the dielectric constant [epsilon]r is 30-50, the temperature coefficient [tau]f of resonance frequency at the temperature of -40 DEG C-85 DEG C is +/-10 ppm/DEG C, the quality factor Qf is greater than or equal to 40000, the bending strength is greater than or equal to 200 MPa, the thermal shock temperature is 110 DEG C, the reliability is stronger, and the requirement of miniaturization development of dielectric resonators, filters and other microwave components can be met; and the multiphase microwave dielectric ceramic material can adapt to severe working environments such as large day and night temperature difference, and has a good application prospect.
本发明属于材料技术领域，具体涉及一种复相微波介质陶瓷材料及其制备方法。本发明通过在复相陶瓷主体中掺杂氧化铝晶须，由于氧化铝晶须具有较高的机械强度和较高的弹性模量，将其适量加入复相陶瓷主体中具有补强增韧的作用，可极大地改善复相陶瓷主体的抗弯强度和抗热震性能。本发明提供的复相微波介质陶瓷材料具有良好的综合性能，其介电常数εr为30‑50，在‑40℃～85℃下的谐振频率温度系数τf为±10ppm/℃，品质因数Qf≥40000，抗弯强度≥200MPa，热震温度为110℃，可靠性更强，可满足介质谐振器与滤波器等微波元器件向小型化发展的要求，还能够适应昼夜温差大等恶劣的工作环境，具有良好的应用前景。
Multiphase microwave dielectric ceramic material and preparation method thereof
复相微波介质陶瓷材料及其制备方法
HUANG QINGHUAN (Autor:in) / WANG XIUHONG (Autor:in) / AI CHENXIA (Autor:in) / LIANG XIAOJIAN (Autor:in) / WANG BINHUA (Autor:in) / XU HAIXIN (Autor:in)
02.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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