The heat resistance corrosion resistant 99% alumina ceramic plate is a high - performance ceramic material plate. Here are its main characteristics:
• High - temperature resistance: It can work stably at high temperatures. Its melting point is as high as 2075℃, and it can be used for a long time below 1700℃ . The low thermal expansion coefficient ensures that it will not deform or soften easily at high temperatures .
• Corrosion resistance: It has extremely strong chemical stability and is highly resistant to acid, alkali, and organic solvents . For example, it can be immersed in 98% concentrated sulfuric acid for half a year without being corroded .
• High hardness and wear resistance: The Mohs hardness of 99% alumina ceramic can reach level 9 or higher . Its wear - resistance is 10 to 20 times that of stainless steel, which can effectively resist mechanical wear and scratching .
• Good electrical insulation: It has a high volume resistivity and dielectric strength, with a volume resistivity of ≥10¹⁴Ω・cm and a breakdown strength of ≥25kV/mm . It can be used as an ideal insulating material in electronic equipment.
These properties make 99% alumina ceramic plates widely used in semiconductor manufacturing, electronic industry, chemical industry, aerospace and other fields .
The heat - resistance corrosion - resistant 99% alumina ceramic plate is a high - performance ceramic product with the following notable features:
• High - temperature resistance: It has a high melting point of approximately 2050℃ and can be used for a long time at temperatures below 1700℃ . Its low thermal expansion coefficient ensures that it maintains good dimensional stability at high temperatures without deforming or softening easily .
• Corrosion resistance: With strong chemical stability, it is highly resistant to acids, alkalis, and organic solvents . It hardly reacts with common strong acids such as hydrochloric acid, sulfuric acid, and nitric acid, as well as strong bases like sodium hydroxide . Only hydrofluoric acid and concentrated alkalis at high temperatures can corrode it .
• High hardness and wear resistance: The Mohs hardness of 99% alumina ceramic can reach level 9 or higher . Its surface is dense, and its wear - resistance is much better than that of low - purity alumina ceramics .
• Good electrical insulation: It has a high volume resistivity of ≥10¹⁴Ω・cm and a breakdown strength of ≥25kV/mm . It can maintain stable insulation performance in high - voltage and high - frequency environments .
