Zirconia toughened alumina for heat treatment

Metal heat treatment this everyone should be more clear, but structural ceramics also need to be heat treatment this should not be very familiar, today, Kezhong Industrial Ceramics factory to introduce a structural ceramics in a "zirconia toughened alumina" heat treatment method.

When the production of zirconia toughened alumina, it is necessary to carry out a certain heat treatment, so what is the purpose of doing this? The following content will give you a detailed explanation.

1, in order to improve the hardness, thereby enhancing the wear resistance of zirconia toughened alumina, prolong the life of the workpiece: this kind of zirconia toughened alumina because of high carbon and high chromium, the two elements are a pair of contradictions, due to the carbon content and chromium content is too high, so easy to cause the uneven distribution of chromium elements, thereby affecting the product performance.

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2. The purpose of heat treatment of zirconia toughened alumina is to remove the magnetic force, because zirconia toughened alumina in the process of cold heading or grinding ball will produce working magnetic, metalloid structure from austenite to martensite slowly change, corrosion resistance will become worse, so through heat treatment can on the one hand can remove magnetism, on the other hand can also be converted into the original austenite, With proper heat treatment, the furnace temperature is raised to 850 degrees, zirconia toughened alumina is held for 1-2 hours, and then poured into cold water to cool quickly, which usually removes the magnetism. 2. The purpose of heat treatment of zirconia toughened alumina is to remove the magnetic force, because zirconia toughened alumina in the process of cold heading or grinding ball will produce working magnetic, metalloid structure from austenite to martensite slowly change, corrosion resistance will become worse, so through heat treatment can on the one hand can remove magnetism, on the other hand can also be converted into the original austenite, With proper heat treatment, the furnace temperature is raised to 850 degrees, zirconia toughened alumina is held for 1-2 hours, and then poured into cold water to cool quickly, which usually removes the magnetism.