Effect of additives on the oxidation resistance of aluminum-carbon submerged nozzles

Effect of additives on the oxidation resistance of aluminum-carbon submerged nozzles
1. SiC can not play the role of anti-oxidation on aluminum carbon refractory materials, Si, Al, B4C and composite additives can play a certain degree of anti-oxidation effect on aluminum carbon submerged entry nozzle, among which B4C anti-oxidation effect is the best.Tundish Nozzle Well Block
2. The anti-oxidation mechanism of Si, B4C and Al powders is mainly based on their affinity for oxygen being greater than C, which is preferentially oxidized. In addition, they generate new phases during the oxidation process, change the microstructure of the material, reduce the porosity of the material, and improve the oxidation resistance of the material. Tundish Nozzle
3. Both Al and Si powder form a ceramic bond with other components in the refractory material during heat treatment, so they can increase the strength of the material to a certain extent, and Si powder increases the strength of the material to a greater extent.

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Yingkou Ruizhi Refractories Co., Ltd. is a professional China manufacturer of refractory material for high temperature melting furnaces.Ruizhi Refractories supply main products are: Refractory material, refractory brick, refractory castable,refractory nozzle, ceramic fiber, fire brick, insulation material for converter, electric arc furnace, ladle, LF furnace, tundish, foundry ladle, torpedo ladle, etc. Ruizhi has established technical cooperation relationship with some refractory research institutions and universities. Ruizhi Refractories products have been exported to such as South Africa, Australia, Canada, Malaysia, Bangladesh, Iran, Saudi Arabia, UAE, Iraq, Pakistan, Philippines, Vietnam, Singapore, Tajikistan, Indonesia, South Korea, Sri Lanka, Nigeria, Kenya, Ethiopia, etc.

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