Kinetics of corrosion action of aluminum in sodium hydroxide solution

In fabrication of high conversion efficiency hohlraums, one of the most important steps is using sodium hydroxide solution to etch away the aluminum mandrel. In order to grip the corrosion action of aluminum in sodium hydroxide solution, we use weight loss method to investigate the corrosion action of aluminum in 1-5 mol/L sodium hydroxide solution at 30 ℃ and that in 3 mol/L sodium hydroxide solution in the condition of 30-50 ℃. Through disposing the experiment data by experience formula, we obtain the kinetic parameters, i.e. reaction rate constant, order of reaction, apparent activation energy, and pre-exponential factor. Moreover, the reaction products are analyzed by means of X-ray diffraction.