Temperature Resistance Of Alumina Ceramic Bars In Heat Treatment

Time:2019/5/17 11:54:02 Click on:

Do you know the temperature resistance and toughness of alumina alumina ceramic rollers under heat treatment? It doesn't matter if you don't know about it. Today, Xiaobian will give you a detailed introduction on this issue. Let's take a look at the following articles.

Alumina ceramic rollers have the best comprehensive properties, which include sufficient strength, excellent plasticity and low hardness. This is one of the reasons why they are widely used.

The tensile strength, yield strength and hardness of alumina ceramic roller increase with the decrease of temperature, while the plasticity of alumina ceramic roller decreases with the decrease of temperature. The tensile strength increases rapidly in the temperature range of 15 - 80 C, but changes slowly when the temperature decreases further, while the yield strength increases uniformly.

More importantly, as the temperature of alumina ceramic roller decreases, its impact toughness decreases slowly, and there is no brittle transition temperature. Therefore, the 1818-8 non-alumina ceramic roller can maintain enough plasticity and toughness at low temperature. For example, the impact absorption energy can reach 392J at 196 C, and even at liquid helium temperature (1 2700C), it has the ability to prevent brittle fracture at the stress concentration site.

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