Aluminum Alloy (6061-O, 5052-O, and 1100) Dissolution Rate Testing

Technical Report · Mon Aug 16 04:00:00 EDT 2021

DOI:https://doi.org/10.2172/1844189· OSTI ID:1844189

Gogolski, Jarrod M. ^[1]

---

1. Savannah River Nuclear Solutions (SRNS), Aiken, SC (United States); Savannah River National Laboratory (SRNL), Aiken, SC (United States)

The dissolution rates of two aluminum alloys (6061-O and 5052-O) were tested to determine which would be able to replace an aluminum alloy that was difficult to procure (6063-T6). The findings of this memo conclude that the dissolution rates of 6061-O and 5052-O are two orders of magnitude slower than 6063-T6. Therefore, it is unlikely that 6061-O and 5052-O would be adequate replacements for 6063-T6 based on similar dissolution rates in a Hg-catalyzed, nitric acid solution. Another area of interest was how temperature variation would influence the dissolution rate of an aluminum alloy (specifically 1100). This separate study found that the dissolution rate of the aluminum alloy below 86 °C was approximately 0.0014 % of the dissolution rate at 94.5°C and above. Therefore, at or below 86 °C the dissolution rate reduces significantly which translates to much longer dissolution times.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States); Savannah River National Lab (SRNL), Aiken, SC (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: 89303321CEM000080
• OSTI ID: 1844189
• Report Number(s): SRNL-L6200-2021-00002
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY