Effect of Heat Treatment on the Corrosion Resistance for New Zirconium-Based Alloy

LIU Wen-qing; LI Qiang; ZHOU Bang-xin; YAN Qing-song; YAO Mei-yi

Volume 26 Issue 3

Jun. 2005

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LIU Wen-qing, LI Qiang, ZHOU Bang-xin, YAN Qing-song, YAO Mei-yi. Effect of Heat Treatment on the Corrosion Resistance for New Zirconium-Based Alloy[J]. Nuclear Power Engineering, 2005, 26(3): 249-253,287.

Citation:

LIU Wen-qing, LI Qiang, ZHOU Bang-xin, YAN Qing-song, YAO Mei-yi. Effect of Heat Treatment on the Corrosion Resistance for New Zirconium-Based Alloy[J]. Nuclear Power Engineering, 2005, 26(3): 249-253,287.

Citation:

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Effect of Heat Treatment on the Corrosion Resistance for New Zirconium-Based Alloy

Instrumental Analysis and Research Center, Shanghai University, 200436, China

Received Date: 2004-06-03
Rev Recd Date: 2004-08-27
Publish Date: 2005-06-15

Abstract

Abstract

After being treated in different ways, N18 zirconium alloy specimens are exposed in 0.01mol · L^-1 LiOH aqueous solution at 350℃, 16.8MPa. The microstructures of these specimens are carried out by high-resolution transmission electron microscopy （HRTEM）. The specimen treated by 800℃/C. R/ 500℃ has best corrosion resistance among all the specimens. TEM examination shows, in addition to Zr（Fe,Cr）₂, there exist Zr-Nb-Fe SPPs, which containing much more Nb element, in the specimen. The existence of Zr-Nb-Fe SPPs is helpful to the reduction of niobium content in αZr solid solution and results in an improvement in the corrosion resistance of N18 zirconium alloy.
- Heat treatment,
- Orrosion resistance,
- Microstructure,
- Second phase particles