Alumina electronic piezo ceramic substrate

Publish Time: 2018-08-30     Origin: Site

Electronic piezo ceramic transducer includes other materials such as device porcelain, electric vacuum porcelain, piezoelectric porcelain, capacitor porcelain, semiconductor porcelain and magnetic porcelain.PZT materials are various piezo ceramics used in the electronic technology. The main characteristics of electronic ceramics are detection, conversion, mismatch, transmission and storage of information such as electricity, magnetism, sound, light, heat, force, chemistry and biology in the communications, electronics, computer, automatic control, laser, machinery, It is a key material in many high-tech fields such as automotive, medical, aerospace, aviation, nuclear energy and biotechnology. Electronic piezo ceramics are also known as ceramics for the electronics industry. It has a general structure, chemical composition and electrical properties. Engineering ceramics have fundamental differences. These differences are due to a series of special technical requirements of the electronics industry. The most important of piezo ceramic sensor is that electronic ceramics need to have high mechanical strength, high temperature resistance, high resistance humidity , radiation resistance, electrical strength and insulation resistance. Can be varied within a wide range and excellent anti-aging properties.


Alumina piezo ceramic is a ceramic material mainly composed of alumina, which is the most stable substance in oxide.it is quality, high temperature resistance, corrosion resistance, wear resistance, high mechanical strength, high hardness, high electrical insulation performance and low dielectric loss widely used in the mechanical electronics, chemical engineering, electronic power, biomedicine, aerospace and other fields.For example, in the field of mechanical devices, various piezo ceramic tools, ceramic nails, grinding wheels, ball valves, bearings can be manufactured in the field of electronic power, ceramic substrates, ceramic substrates, ceramic films, various electronic materials, and electrical piezoelectric materials acoustic transducer can be fabricated. Magnetic materials can be made into piezoceramics filler in the chemical engineering; artificial joints, artificial teeth, artificial bones can be manufactured in the medicine in the aerospace industry,which can prepare high temperature heat-resistant fibers for flexible insulation materials and thermal insulation tiles on the space shuttle.


Alumina electronic piezoelectric ceramic products substrates is prepared by adding an appropriate amount of mineral raw material to the 99% alumina ceramic material.The utility model has the function of supporting as a base in the external component and the membrane circuit component. Alumina piezo ceramic substrates are widely used in thick film mixing because of their high temperature resistance, high electrical insulation properties, low dielectric loss, high thermal conductivity, strong chemical stability, and similar thermal expansion coefficients of components. Integrated circuits, thin films, and various thin film components (such as thin film capacitors, PTC resistors ). On the one hand, the thickness and surface quality of alumina piezoelectric ceramic element substrates as substrate materials are important indicators .However, the alumina ceramics obtained by sintering cannot be guaranteed in the flatness and thickness, and the surface roughness is difficult to control. On the other hand, the alumina ceramic substrate is often covered with an amorphous glass body after sintering.The device requires high-quality high-temperature enamel to ensure the perfect  appearance and performance parameters of the device. However, due to the industrial application requirements of alumina ceramics, it is necessary to metallize them, and it is also necessary to remove the glaze layer on the piezo ceramic surface. Therefore, it is of great significance to mechanically process alumina ceramic sheets to obtain a desired thickness and surface roughness, and a ceramic substrate is having good surface uniformity.


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