Changes in the optical properties of thin iron oxide coatings during etching

1975 ◽  
Vol 23 (5) ◽  
pp. 1509-1511
Author(s):  
Yu. I. Kol'tsov
Keyword(s):  
Optical Properties ◽  
Iron Oxide ◽  
Oxide Coatings ◽  
Iron Oxide Coatings

scholarly journals Friction and Wear Characteristics of Iron Oxide coatings

2003 ◽  
Vol 2003.41 (0) ◽  
pp. 281-282
Author(s):  
Yoshiki YAMAMOTO ◽  
Yasuo KONDO ◽  
Fumio OBATA ◽  
Kouitsu MIYACHIKA ◽  
Takao KOIDE ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Friction And Wear ◽  
Oxide Coatings ◽  
Wear Characteristics ◽  
Iron Oxide Coatings ◽  
Friction And Wear Characteristics

Characterization of iron oxide coatings prepared by MOCVD method from Fe(CO)5

2020 ◽  
Vol 30 ◽  
pp. 434-438 ◽  
Author(s):  
Polina G. Bespalova ◽  
Alexandr A. Vorobyev ◽  
Tatyana S. Kunkel ◽  
Alexandr L. Shakhmin ◽  
Maxim V. Mishin
Keyword(s):  
Iron Oxide ◽  
Oxide Coatings ◽  
Iron Oxide Coatings

THE EFFECTS OF ORGANIC MATTER, IRON OXIDES AND MOISTURE ON THE COLOR OF TWO AGRICULTURAL SOILS OF QUEBEC

1979 ◽  
Vol 59 (2) ◽  
pp. 191-202 ◽  
Author(s):  
S. CHOMCHAN ◽  
R. G. LEGER ◽  
G. J. F. MILLETTE
Keyword(s):  
Organic Matter ◽  
Iron Oxide ◽  
Iron Oxides ◽  
Agricultural Soils ◽  
Area Ratio ◽  
Oxide Coatings ◽  
Soil Color ◽  
Amorphous Iron ◽  
Reflectance Curve ◽  
Iron Oxide Coatings

A new spectrophotometric interpretation of the influence of organic matter, iron oxides and moisture on the soil color of the Ste-Sophie sand and the Ste-Rosalie clay is reported. The method is based on calculation of the area ratio of the reflected (area under the reflectance curve) against the absorbed (area over the reflectance curve). The higher the ratio the lighter is the soil. After treatment to remove organic matter and iron oxide coatings, both soils presented colors significantly lighter than those observed in untreated soils. Organic matter and amorphous iron oxide contributed for 78% and 64% of the color in the Ste-Sophie sand and in the Ste-Rosalie clay, respectively. Moisture tends to mask the effects of organic matter and iron oxides on soil color. Air-dried soils when compared to moistened soils were lighter in color.

Carbonate rocks in the Mojave Desert as an analogue for Martian carbonates

2011 ◽  
Vol 10 (4) ◽  
pp. 349-358 ◽  
Author(s):  
Janice L. Bishop ◽  
Rachel T. Schelble ◽  
Christopher P. McKay ◽  
Adrian J. Brown ◽  
Kaysea A. Perry
Keyword(s):  
Iron Oxide ◽  
Mojave Desert ◽  
Carbonate Rocks ◽  
Thermal Emission ◽  
Soil Environment ◽  
X Ray Diffraction ◽  
Oxide Coatings ◽  
Imaging Spectrometer ◽  
Iron Oxide Coatings ◽  
Rock Coatings

AbstractCarbonate rocks in the Mojave Desert are presented as potential analogues for the carbonates on Mars. Rocks collected from the Little Red Hill site contain iron oxide-bearing coatings that greatly suppress the spectral features due to carbonate of the underlying material and impart a spectral slope. The Mojave Desert was formerly a lush pedogenic soil environment that, over time, transformed into the current arid climate with abundant rock varnish. One niche for microbes in the current desolate environment is inside and underneath the rocks where the microbes profit from solar protection by the iron oxide rock coatings. Carbonates were long predicted to be present on Mars and have recently been detected by instruments on Phoenix and MER and using hyperspectral orbiters such as the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), the Planetary Fourier Spectrometer (PFS) and the Thermal Emission Spectrometer (TES). We describe here the results of a study of carbonate rocks from the Little Red Hill site of the Mojave Desert that includes X-ray diffraction (XRD), chemistry and visible-infrared reflectance spectroscopy. Coatings on the carbonate rocks greatly reduced the strength of the carbonate bands and caused changes in the shape of some bands. We compare these data with a carbonate outcrop at Nili Fossae, Mars. If microbes once inhabited Mars, similar carbonate rocks with iron oxide coatings could have provided a UV-protected niche there as well. Thus, analysis of carbonate-bearing regions on Mars by future landers would be useful sites to search for biosignatures.

Phase transformation in plasma-sprayed iron oxide coatings

1987 ◽  
Vol 154 (1-2) ◽  
pp. 57-64 ◽  
Author(s):  
L. Parent ◽  
J.P. Dodelet ◽  
S. Dallaire
Keyword(s):  
Phase Transformation ◽  
Iron Oxide ◽  
Oxide Coatings ◽  
Iron Oxide Coatings ◽  
Plasma Sprayed

Photocatalytic Iron Oxide Coatings Produced by Thermal Spraying Process

2015 ◽  
Vol 24 (8) ◽  
pp. 1487-1497 ◽  
Author(s):  
A. H. Navidpour ◽  
M. Salehi ◽  
M. Amirnasr ◽  
H. R. Salimijazi ◽  
M. Azarpour Siahkali ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Thermal Spraying ◽  
Oxide Coatings ◽  
Iron Oxide Coatings ◽  
Spraying Process
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