STP1181

    Evaluation of Plasma Cleaning, an Environmentally Friendly Process, for Removing Lubricants from Metallic Surfaces

    Published: Jan 1993


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    Abstract

    The effectiveness of plasma cleaning as a substitute for CFCs was compared to two alternative methods, CO2 snow and detergent cleaning. The proposed ASTM G XYZ standard test coupon described in “Standard Practice for Preparation of Contaminated Test Coupons for the Evaluation of Cleaning Agents for Use in Oxygen-Enriched Systems and Components” was used to compare all three cleaning methods. The cleaning experiments employed two different hydrocarbon oils, Precision-D and 3-in-1, which were applied to the test coupons by either dipping the coupons into a lubricant and solvent mixture or spraying the mixture onto the coupons. Also, three different test coupons were chosen for the experiments: AL3003 (aluminum), C1018 (carbon-steel), and CDA706 (brass alloy).

    Plasma, CO2 snow, and detergent cleaning were demonstrated to be effective in removing oil contamination from metallic surfaces. CO2 snow and detergent cleaning methods are most beneficial in removing gross oil contamination from rough surfaces. Plasma cleaning which can also be used to remove gross oil contamination is recommended over the other methods when oil contamination must be reduced to very low levels.

    Keywords:

    Plasma Cleaning, CO, 2, Snow Cleaning, Detergent Cleaning, Environmental Scanning Microscopy, Laser Profilometry, Chlorofluorocarbons, Oxygen Compatibility, Hydrocarbon Oil, Metals


    Author Information:

    Paciej, R
    Section managers, The BOC Group Inc., Group Technical Center, Murray Hill, NJ

    Jansen, F
    Staff engineer, The BOC Group Inc., Group Technical Center, Murray Hill, NJ

    Krommenhoek, S
    Section managers, The BOC Group Inc., Group Technical Center, Murray Hill, NJ


    Paper ID: STP15958S

    Committee/Subcommittee: G04.02

    DOI: 10.1520/STP15958S


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