Analyse de couches d'oxydation anodique d'acier inoxydable pour la conversion photothermique de l'énergie solaire

Aries, L.; Calsou, R.; Flores, J.A.; Traverse, J.P.

doi:10.1051/mmm:0199100204044300

Cited by 1 publication

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results are consistent with those obtained by electron diffraction on thin foil treated in the same conditions (3) However the major part of the coating is made of amorphous Cr3 substituted magnetite with a higher substitution level than in the superficial part (the only layer observed by RHEED), according to the chemical analysis and as demonstrated by direct and indirect investigation methods (5) (7). Crystallisation of this phase can be achieved by thermal treatment (5)or can be seen in ultrasonically obtained powder from thick coatings (7). Line indexation in the spinel structure allowed the formula to be determined as near to Fe 2.5 Cr 0.5 04.…”

Section: Compositionsupporting

confidence: 90%

“…The coatings are obtained by chemical transformation of the surface of stainless steels and they can be given remarkable properties which depend on the nature of the starting alloy and the conditions of preparation. Chemical transformation of the surface of ferritic stainless steel allows substituted magnethe based coatings to be obtained (3,5). This original process allows selective solar absorbers to be prepared for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

<title>Selective absorbers from substituted magnetite-based coatings</title>

Traverse

1992

Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XI: Selective Materials, Concentrators and Refle

View full text Add to dashboard Cite

Selective solar absorbers have been prepared for industrial applications with an original treatment -chemical conversion of the surface -of ferritic stainless steels. They present a high solar absorbance (a 0.95), a low emittance (c 0.20), a high thermal stability and a high resistance to corrosion by atmospheric agents. Characteristics of the material have been thoroughly analysed. Results are given and discussed. Physical chemical composition and texture of the coatings are very complex. The coating is a thin, microporous and rough medium presenting a fractal structure. The main component is Cr3 substituted magnetite. Optical properties have been studied with the help of a simple model. In spite of the complexity of the material, the spectral selectivity can be explained and predicted taking chemical composition, texture and depth of the coating into account.

show abstract

Section: Compositionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%