Bench test method for rating the corrosion inhibiting ability of

Details Bench test method for rating the corrosion inhibiting ability of Bench test method for rating the corrosion inhibiting ability of

1992-05-06

1994-01-11

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Process or composition for determination of physical state...

Corrosion resistance or power

422 53, 73 5306, G01N 1700, G01N 3326

Patent

active

052780716

ABSTRACT:
A bench-test method which correlates well with other more costly engine test methods, and which can be used to screen oleaginous formulation prior to performing expensive engine tests. The method comprises a) contacting ball bearing(s) having a smooth surface area with an oleaginous fluid to be screened; b) treating the oleaginous fluid during contacting with corrosive vapor for a period of time and at a temperature sufficient to form a metal oxide coating on the ball bearing(s) surface; and c) visually rating the metal oxide coating on the ball bearings.

REFERENCES:
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patent: 3110567 (1963-11-01), Hughes
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patent: 4347285 (1982-08-01), Batdorf
patent: 4846986 (1989-07-01), Trivett
patent: 5012116 (1991-04-01), Russell
Perry, John H., Chemical Engineers' Handbook, pp. 23-48-23-49, 1963.
ASTM-Multicylinder Test Sequences for Evaluating Automotive Engine Oils, Part 1: Sequence 11D, STP 315H (1980).
ASTM D 665-83, "Standard Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water", pp. 244-250 (1983).
ASTM D 664-87, "Standard Test Method for Acid Number of Petroleum Products by Potentiometic Titration", pp. 237-243 w/2 p. Appendix (1987).

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