The Advantages & Disadvantages Of Alumina Ceramic Sheets

01 Jul.,2024

 

The Advantages & Disadvantages Of Alumina Ceramic Sheets

The Advantages & Disadvantages Of Alumina Ceramic Sheets

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Alumina ceramic sheets are also known as wear-resistant alumina ceramic linings, high-alumina linings, wear-resistant ceramic linings, alumina ceramic patches. Alumina ceramic sheets are mainly made of al2o3 as raw materials and rare metal oxides as solvents. It is calcined at a high temperature of ° C. So how do we identify alumina ceramic sheets?

First of all, we have to look at the surface of the alumina ceramic sheet. The surface of a good alumina ceramic sheet is very smooth, without black spots on the surface, and the color is uniform. Secondly, we can identify the alumina ceramic sheet by measuring the density. Knowing the content of alumina, there is another way to identify the quality of alumina ceramic sheets by doing a wear test.

Any product has its front and back, and the alumina ceramic sheet also has its front and back. Next, I will briefly introduce the advantages and disadvantages of the alumina ceramic sheet: First, let&#;s talk about the advantages: the alumina ceramic sheet has high mechanical strength, wear resistance, resistance to Good corrosion resistance, good impact resistance, good thermal stability, abundant raw materials, low price, environmental protection and pollution-free products.

Let&#;s talk about the shortcomings of alumina ceramic sheets: the ability of post-processing is low, and the product is not suitable for recycling.

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Properties and Applications of Black Alumina Ceramics

black alumina ceramic

Black alumina ceramics, black in appearance, similar in performance to traditional alumina ceramics, microscopic porous structure, referred to as &#;black porcelain&#;.

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Properties of  Black Alumina Ceramics

Advantages of alumina ceramics

Like traditional alumina ceramics,  black alumina ceramics have good insulation properties, small expansion coefficient, high thermal conductivity, high mechanical strength, good light-proof, wear resistance, low dielectric loss and other excellent characteristics. Due to its unique properties, it has received extensive attention and attracted more researchers to develop and study it. In the future, the application of black alumina ceramics in air pollution control and smelting metal filtration is already possible.

Disadvantages of alumina ceramics

Although black alumina ceramics have unique and excellent properties, because they are porous products,  black alumina ceramics have great brittleness, and severe cracks often occur during the sintering process. These performances are very To a large extent, it limits the application and popularization of black alumina ceramics. Therefore, in the research industry, this problem has been plaguing scientific researchers for a long time, but until now, no effective and obvious improvement method has been found. If a solution cannot be found in time, its use will definitely be affected.

At present, in the market of ceramic preparation, there are many ways of toughening black corundum ceramics, such as particle toughening, toughening transformation, and adding an appropriate amount of ductility to its toughening. While designing black alumina ceramics, we should also look for new ways and means.

Application of black alumina ceramics

Black alumina ceramic substrate

Black alumina ceramic substrates are mostly used in semiconductor integrated circuits and electronic products. This is mainly due to the high light sensitivity of most electronic products. Packaging materials need to have strong shading properties to ensure the clarity of the digital display. It is packaged on a black alumina ceramic substrate. With the continuous upgrading of modern electronic components, the demand for black aluminum oxide packaging substrates is also expanding. At present, research on the manufacturing process of black alumina ceramics is being actively carried out at home and abroad.

The black alumina ceramic substrate for electronic product packaging is based on the needs of its application field. The selection of black coloring materials needs to combine the properties of ceramic raw materials. For example, ceramic raw materials need to be considered for better electrical insulation.

Therefore, in addition to the final coloration and mechanical strength of the ceramic substrate, the black coloring material must also consider electrical insulation, thermal insulation and electronic properties. Other functions of packaging materials. During the ceramic coloring process, the low temperature environment may affect the volatility of the coloring material and keep it warm for a certain period of time. During this process, free coloring materials may aggregate into spinel compounds, preventing the continued existence of coloring materials in high temperature environments. Volatility guarantees a coloring effect.

Other Applications for Black Alumina Ceramics

In addition to being used in semiconductor integrated circuits and electronic products, black alumina ceramics can also be used in electronic bases, ceramic metallization, ceramic heating plates for hair straighteners, ceramic heating rods for faucets, and food processing machinery and equipment.

Summarize

With the continuous improvement and development of science and technology and related ceramics, in the near future, the brittleness problem of black alumina ceramics will be solved in time, and its porous characteristics will be more widely used in alumina ceramics. 

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