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Control of alumina ceramics combustion temperature
Posted by:admin  Date:2013-1-6 19:53:38  Click:1127

When we use the alumina ceramics were burning, we need to control the temperature, can't make out the finished product may be not satisfactory. Let's say characteristics of alumina ceramic sintering machine what are.
Alumina ceramics is generally composed of corundum, glass and porosity. Sintering temperature is too high or the holding time is too long will promote the crystal growth, liquid volume increase, this will make the strength of the alumina ceramic, wear-resisting performance will be weakened, and alumina content discretion for increasing the wear resistance of the material has no fixed.
Specifically, its wear resistance depends on the phase composition and microstructure, so, if you want to get high wear resistance of alumina ceramics, should not only consider the high density, bending and compression strength, but also to improve its hardness and fracture toughness.
Alumina ceramics in general can be summarized as three major advantages:
1. Light weight: the density of 3.5 g/cm3, is only half of the iron and steel, can greatly reduce equipment load.
2. Hardness: the rockwell hardness of HRA80-90, hardness is second only to the diamond, but wearability is far more than wear resistant steel and stainless steel.
3. Good abrasion resistance, its wearability is equivalent to 266 times of manganese steel, high chromium cast iron of 171.5 times. (figure/

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