INTERMEDIATE-TEMPERATURE OXIDATION OF BERYLLIDES. Final Report

Technical Report · Sun Sep 01 04:00:00 EDT 1963

OSTI ID:4119188

Perkins, F C

The oxidation characteristics of ZrBe/sub 13/, Zr/sub 2/Be/sub 13/, NbBe/ sub 1 and Nb/sub 2/Be/sub 17/ were investigated at 550to 1100 deg C. The zirconium beryllides tended to disintegrate and/or oxidize at very rapid rates under wet air at 650 to 900 deg C, while the niobium beryllides exhibited severe oxidation at 900 to 1050 deg C. The zirconium beryllides were susceptible to serious oxidation under wet air, dry air, and wet argon atmospheres, the minor variations in sensitive temperatures and oxidation rates being dependent upon the characteristics and protective qualities of the oxide coatings which were formed. The rapid oxidation rates at intermediate temperatures appeared to be related to the metastability of some of the oxidation products formed. Disintegration andd metallic spalling effects of beryllide materials in the intermediate-temperature range were associated with the stresses generated by the formation of the oxide coatings. The immunity of modified beryllide materials containing aluminum alloy additions to severe oxidation in this temperature range was attributed to the protective qualities and stability of the thin oxide coatings which were obtained. (auth)

• Research Organization: Denver. Univ. Denver Research Inst.
• NSA Number: NSA-18-007136
• OSTI ID: 4119188
• Report Number(s): DRI-2128
• Country of Publication: United States
• Language: English

Related Subjects

AIR
ALUMINUM ALLOYS
ARGON
BERYLLIUM ALLOYS
COATING
CORROSION PROTECTION
DECOMPOSITION
HIGH TEMPERATURE
HUMIDITY
INTERMETALLIC COMPOUNDS
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
OXIDATION
OXIDES
TEMPERATURE
THICKNESS
ZIRCONIUM ALLOYS