Preparation Of Silicon Titanium Sponge Production Process

In titanium alloys,Si element is usually added in the form of alloys,and titanium sponge were pressed electrodes,melting,and ultimately into the titanium alloys,commonly used way is to join Al-Si alloy ingots.Since the Al-Si alloy ingots can not directly add,and Al-Si alloy powder has a higher cost,the use of aluminum-silicon ingot often use planer will be added after crushing,such operations to use a great deal of inconvenience,but a mixed problem of uneven.This issue is by obtaining a certain content in titanium sponge raw silicon by melting titanium into titanium alloys,to save production costs,increase productivity titanium,titanium alloy to ensure the accuracy of the Si element in the distribution and uniformity has a very important significance.This will be done through the carbon tetrachloride and silicon tetrachloride uniform mixing,the use of magnesium silicon prepared by thermal reduction of titanium sponge,titanium sponge and then get silicon by vacuum distillation of the way.Of silicon tetrachloride and titanium tetrachloride in a 0.06%to 0.02%,the mixing proportion of 0.10%,the reduction temperature is controlled at 840 ℃,for the preparation of silicon-containing titanium sponge at 860 ℃,880 ℃.The products were characterized by XRD,and by plasma-atomic emission spectroscopy,titanium tetrachloride and silicon tetrachloride by mixing uniformly mixed,Si content of 0.01 to 0.1%after mixing.When the concentration of silicon in the raw material in the 0.02-0.06%by XRD phase analysis of silicon in the form of titanium sponge in the presence of titanium-silicon alloy,when the silicon concentration is 0.1%,the silicon in the titanium sponge and titanium-silicon alloy elemental silicon exists in two forms.Reduction temperature has some influence on the final product,when the reduction temperature from 840 ℃,860 ℃ to 88 ℃,the discovery phase analysis by XRD,Si diffraction peak intensity gradually weakened to disappear.Increase in temperature promotes the reaction to elemental silicon alloy titanium silicon.