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All posts in Alumina Ceramic Material

99.5 Alumina

99.5% alumina powder is white powder or fine sand, with good fluidity and stable performance. It is difficult to dissolve in acid-base solution and has good sintering performance. After the alumina material is isostatically pressed and dry pressed into various shapes and sintered, its color is still white. It is usually used as a raw material in high-alumina refractory materials, electromagnetic devices, and polishing and grinding products. The density of 99.5% alumina ceramics is greater than that of 95% and 99% alumina ceramics. It has strong impact resistance and can greatly improve the grinding efficiency. The main molding methods of 99.5% alumina ceramic products are dry pressing, isostatic pressing, and Read more

99 Alumina

99% alumina ceramics and 95% alumina material are the two most commonly used aluminum ceramics. Compared with 95% alumina ceramics, their mechanical properties are stronger and more wear-resistant. 99% alumina has a very high melting point, high hardness and high mechanical strength, and the thermal shock stability is reduced due to the increase in the relative thermal expansion coefficient. 99 alumina is an electrical insulating material with high resistivity. It also has good chemical stability, so its corrosion resistance is good. And alumina ceramics are insoluble in water, only slightly soluble in strong acid and alkaline aqueous solutions. It is usually used in chemical and physical grinding environments, so 99% Read more

998 Alumina

The 99.8% alumina ceramic is made of white alumina powder with a purity of 99.8%. The powder is mixed with a small amount of oxides such as Fe2O3 and Na2O. After alumina material molding and sintering, it becomes a white solid insoluble in water, odorless and tasteless. , High hardness, easy to absorb moisture but not deliquescence (burned does not absorb moisture). The density of 998 alumina ceramics is between 3.8-3.9g/cm3, its melting point is 2050℃, and its high temperature resistance is 1700℃. The compressive strength is 2550Mpa and the dielectric constant is 9.85. Compared with 95 porcelain, 99 porcelain and 995 porcelain, 998 alumina ceramics have stronger insulation properties Read more

95 Alumina

95% alumina ceramics is the most widely used type of structural ceramics. Because it has excellent electrical properties at high frequencies, it has low dielectric loss, high volume resistivity, high strength, high hardness, low linear expansion coefficient, and strong wear resistance and heat resistance. And in the same high temperature use environment, 95 porcelain has slightly stronger insulation performance than 99 porcelain, so it is recommended to use 95% alumina ceramics for higher insulation requirements at high temperatures, and its cost is also lower. But the disadvantage is that 95% alumina ceramics are more prone to collapse during processing, so you need to be very careful during processing! In addition, Read more