Corrosion Resistance of Zr-1Nb Alloy in Lithium Hydroxide Aqueous Solution

• 出 处: Rare Metals
• 发表日期: 2001年02期
• 关键词: cladding Philadelphia zirconium compensated Nuclear exposed ternary hexagonal so

The corrosion resistance of Zr-1Nb alloy was compared with that of Zr-Sn-Nb-Fe and Zr-4 alloys, and the effect of hydrochemistry on the corrosion resistance of Zr-1Nb alloy was discussed. Experimental results show that niob- ium oxide is partly soluble in LiOH aqueous solution. Therefore, when Zr-1Nb alloy is corroded in LiOH aqueous solution, a soluble niobate produced by the reaction between the corrosion products of β-Nb particles and LiOH results in the formation of pores in the zirconium oxide films and causes the degradation of the corrosion resistance of Zr-1Nb alloy tested in LiOH aqueous solution.

The corrosion resistance of Zr-1Nb alloy was compared with that of Zr-Sn-Nb-Fe and Zr-4 alloys, and the effect of hydrochemistry on the corrosion resistance of Zr-1Nb alloy was discussed. Experimental results show that niob-ium When, Zr-1Nb alloy is corroded in LiOH aqueous solution, a soluble niobate produced by the reaction between the corrosion products of β-Nb particles and LiOH results in the formation pores in the zirconium oxide films and causes the degradation of the corrosion resistance of Zr-1 Nb alloy tested in LiOH aqueous solution.