Corrosion Behavior of B₄C/6061Al Composite for Neution Absorption in Boric Acid Solution

General corrosion, crevice corrosion and encapsulated corrosion behavior in boric acid solution (90 ℃) of the B₄C/6061Al composite material by pickling, anodizing, shot peening treatment, respectively, was studied. The results show that the pickling, anodizing, and shot peening treated specimens had little change in quality, thickness, and density after corrosion for different times. After general corrosion, the anodizing and shot peening treated specimens showed no obvious corrosion traces, while the color of pickling treated specimen surface became darker with increasing corrosion time. After crevice corrosion, the surface of the non-simulated crevice corrosion area of the specimen was in good condition, while the corrosion of the simulated crevice corrosion area was relatively serious. After encapsulated corrosion, local corrosion occurred on the specimen, flocculent aluminum oxides were generated, and anodized film of the anodizing treated specimen was partially peeled off.