抄録
The Titanium Sheet used in this study was prepared from the home-made Titanium Sponge. The melting of the Sponge was carried out with the specially designed tungsten tipped argon arc furnace. The slab obtained was hot forged and rolled at about 800° and the cold rolled into the sheet having the thickness of 0.5 m/m: the final rate of reduction was about 38%. The Titanium Sheet, as rolled condition, was exposed to the corrosive action of HCl, H2SO4, HNO3, H3PO4, HF, aqua regia, picric acid, NaOH, FeCl3, CuCl2 having various concentrations respectively at room temperature. In order to obtain a basis for comparison, 18-8 Stainless Steel, Aluminium, Phosphorous Bronze, Nickel Silver and Lead were also subjected to the same corrosion test. The results of the corrosion test showed in general the superiority of the Titanium Sheet compared with other metals and alloys as shown in Table 2. Except conc HCl, conc H2SO4 and HF, the weight-decrease of the Titanium Sheet against various corrosive reagents was found to be negligiblly small. These results agreed in general with previous works well, except slight difference observed in the corrosive action of 70% H2SO4 reported by L.B. Golden.
