IMPROVEMENTS IN OR RELATING TO THE OPERATION OF MACHINERY WHICH IS EXPOSED TO ATOMIC RADIATION

Patent · Wed Aug 31 04:00:00 EDT 1960

OSTI ID:4131557

Petroleum hydrocarbon lubricants can be protected against radioinduced increases of viscosity by incorporation of an oil-soluble organic cadmium. lead. or iron salt. Such a salt may be a salt of a fatty acid containing at least 12 carbon atoms, but the best salt for viscosity protection is a cadmium dithiocarbamate with two or more N-alkyl groups having 3 to 20 carbon atoms each. The concentration of the salt in the lubricant is generally between 1 and 4 wt. %. Typical light turbine oils without a salt. with cadinium diamyldithiocarbamate, with iron naphthenate, and with lead naphthenate were irradiated at doses up to 275 megarads and their kinematic viscosities (KV) compared at 100 and 210 deg F; the data for 100 deg F are plotted on a% increase in KV vs. meparads graph. For a 210megarad exposure. the oil without a salt gave 16% incresse in KV (100 deg F): whereas. the oil with cadmium diamyldithiocarbamate gave >3% increase. (D.L.C.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-026022
• OSTI ID: 4131557
• Report Number(s): GB 846798
• Country of Publication: United Kingdom
• Language: English

Related Subjects

ALKYL RADICALS
ATOMS
CADMIUM COMPOUNDS
CARBON
HYDROCARBONS
IRON COMPOUNDS
LEAD COMPOUNDS
LUBRICANTS
LUBRICATION
METALS, CERAMICS, AND OTHER MATERIALS
MIXING
NAPHTHALENE
OILS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PETROLEUM
QUANTITY RATIO
RADIATION EFFECTS
RADIATION PROTECTION
SALTS
SOLUBILITY
TURBINES
VISCOSITY