Analysis of the performance of alumina ceramics

Today,the editor of Alumina Ceramics helps you understand the performance of Alumina Ceramics.Follow the editor to learn!

At an oxide melting point of more than 2000°C,alumina is the most flexible and inexpensive material.It is rich in natural resources and generally exists in two forms.Call a natural corundum,namely-Al 2O3,ruby and sapphire corundum are different from the color change,the other is bauxite.

Thermal spraying using alumina powder is pulverized to obtain high purity and practice fusion-AI2O3oa-AI2O3 crystal is the most stable and good heat dissipation cycle among different variants of hexagonal structure.

Alumina can be widely used in thermal insulation coatings,high temperature resistant,wear-resistant coatings and insulating coatings.The coating is in a thermal insulation coating.Nickel-chromium or nickel-clad aluminum should be used as a transition layer to improve the bonding strength And to prevent oxidation or corrosion corrosion of the workpiece substrate; as a wear-resistant coating,spraying should increase power to ensure that the powder is fully melted and reduce the coating material.Used as a tuyeres in blast furnaces and slag can increase its service life; for preventing high temperature air jets from eroding rocket nozzles; in recent years,chemical examples have been used to prevent corrosive media.

However,the aluminum oxide coating cannot withstand impact loads and local collisions,or the damage and loss caused by the coating.In order to improve the performance of alumina and increase the density of the coating,there are often titanium oxide or nickel aluminum composite materials.The toughness and impact resistance of the coating are better mixed than pure alumina.For example,adding a certain amount of titanium dioxide to the prepared aluminum oxide,Cr2O3,SiO2 film,through heating,cooling,phase change.As a result,the overall performance of the coating and the alkali and thermal cycling performance of the workpiece is improved.