X-ray photoelectron spectroscopy study of radiofrequency-sputtered titanium carbide, molybdenum carbide, and titanium boride coatings and their friction properties

Technical Report · Sat Oct 01 04:00:00 EDT 1977

OSTI ID:6849279

Brainard, W A; Wheeler, D R

Radiofrequency sputtered coatings of titanium carbide, molybdenum carbide and titanium boride were tested as wear resistant coatings on stainless steel in a pin on disk apparatus. X-ray photoelectron spectroscopy (XPS) was used to analyze the sputtered films with regard to both bulk and interface composition in order to obtain maximum film performance. Significant improvements in friction behavior were obtained when properly biased films were deposited on deliberately preoxidized substrates. XPS depth profile data showed thick graded interfaces for bias deposited films even when adherence was poor. The addition of 10 percent hydrogen to the sputtering gas produced coatings with thin poorly adherent interfaces. Results suggest that some of the common practices in the field of sputtering may be detrimental to achieving maximum adherence and optimum composition for these refractory compounds.

• Research Organization: National Aeronautics and Space Administration, Cleveland, Ohio (USA). Lewis Research Center
• OSTI ID: 6849279
• Report Number(s): N-77-33348; NASA-TP-1033; E-9102
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALLOYS
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
COATINGS
CORROSION RESISTANT ALLOYS
DEPOSITION
ELECTROMAGNETIC RADIATION
FRICTION
IRON ALLOYS
IRON BASE ALLOYS
MOLYBDENUM CARBIDES
MOLYBDENUM COMPOUNDS
PROTECTIVE COATINGS
RADIATIONS
RADIOWAVE RADIATION
SPUTTERING
STAINLESS STEELS
STEELS
TITANIUM BORIDES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS