THE NITRIC-HYDROFLUORIC ACID PICKLING OF ZIRCALOY-2
studied. Acid concentration, bath contamination, and temperature were the parameters investigated. Pickling rates were found to be linear with time. Pickling rates increased linearly with the HF concentration, but variations in the HNO/sub 3/ concentration had little or no effect on the rate. Contamination of the bath with metal ions found in Zircaloy-2 at concentrations below saturation also had little or no effect on the pickling rate. Temperature- dependency studies in the range of 40 to 160 deg F indicated an activation energy of 4.95 kcal per mole for the dissolution of Zircaloy-2 in HF -HNO/sub 3/. The surface appearance of the Zircaloy-2 used in the study was found to be dependent upon both the HF and HNO/sub 3/ concentrations. (auth)
- Research Organization:
- Battelle Memorial Inst., Columbus, Ohio
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-92
- NSA Number:
- NSA-12-012216
- OSTI ID:
- 4315007
- Report Number(s):
- BMI-1270
- Country of Publication:
- United States
- Language:
- English
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