Composition profiling of solar coatings and materials with AES and ESCA. Progress report, April 16, 1976--December 31, 1976

Technical Report · Wed Dec 01 00:00:00 EST 1976

DOI:https://doi.org/10.2172/7214016· OSTI ID:7214016

Wehner, G. K.

The major accomplishments during the first nine months of this grant are the following: (a) Heat treatment of stainless steel in air at 900/sup 0/C produces a Cr/sub 2/O/sub 3/ coating which is an excellent diffusion barrier for preventing SS components at elevated temperatures to enter into a thermal absorber coating stack like Honeywell's AMA on Mo coating. This simple-to-apply oxide coating allowed to raise the operating temperature (in vacuum) from <500/sup 0/C to >800/sup 0/C without noticeable diffusion of constituents from SS into the coating. (b) The experiments with a torus magnetically enhanced ring-gap discharge showed that it should be possible to coat by sputtering rather economically SS tubing with the AMA-Mo stack. (c) A rather unexpected turn of events occurred when it was discovered that one can enrich metal isotopes by sputtering. (d) In support of other ERDA's grantees, various Auger and ESCA services were provided.

• Research Organization: Minnesota Univ., Minneapolis (USA). Dept. of Electrical Engineering
• DOE Contract Number: EY-76-S-02-2953
• OSTI ID: 7214016
• Report Number(s): COO-2953-1
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR COLLECTORS
COATINGS
CHEMICAL COMPOSITION
CHROMIUM OXIDES
DIFFUSION
ELECTRON SPECTROSCOPY
HEAT TREATMENTS
RESEARCH PROGRAMS
SPUTTERING
STAINLESS STEELS
ALLOYS
CHALCOGENIDES
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CORROSION RESISTANT ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
STEELS
TRANSITION ELEMENT COMPOUNDS
141000* - Solar Collectors &amp; Concentrators