Accession Number : AD0699509

Title :   WEAR REACTIONS OCCURRING AT THE INTERFACES OF MECHANICAL FACE SEALS IN THE BOUNDARY LUBRICATION CONDITION.

Descriptive Note : Master's thesis,

Corporate Author : TENNESSEE UNIV KNOXVILLE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s) : Matthes,David Keith

Report Date : DEC 1969

Pagination or Media Count : 127

Abstract : The study of mechanical seal interfacial wear was made using dry nitrogen gas as the sealed fluid and both industrially pure nickel and some nickel-chromium alloys were used as seal ring materials. The experimentally produced wear reactions were studied metallurgically using optical and electron microscopy. For optical investigations, each seal ring was cut at an angle of five degrees to the worn surface in order to elongate the wear impressions. Surface replicas and chemically thinned sections were produced for electron microscopic studies. The data gathered for detailed investigation were photomicrographs of selected wear areas. Stereographic pairs of most wear areas were taken to aid in documenting the surface irregularities observed, by producing a three dimensional effect to the viewer. Photomicrographs of the thin films were taken to make possible the study of the sub-structure of the material immediately below the wear track. (Author)

Descriptors :   (*SHAFTS(MACHINE ELEMENTS), METAL SEALS), (*METAL SEALS, *WEAR RESISTANCE), (*LUBRICATION, MONOMOLECULAR FILMS), ROTARY SEALS, INTERFACES, LUBRICANTS, NICKEL, NICKEL ALLOYS, CHROMIUM ALLOYS, GAS SEALS, EXPERIMENTAL DESIGN, TEST EQUIPMENT, METALLOGRAPHY, SURFACE PROPERTIES, FRICTION, MICROSCOPY, PHOTOMICROGRAPHY, THESES

Subject Categories : Adhesives, Seals and Binders
      Lubricants and Hydraulic Fluids
      Machinery and Tools
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE