![]() ![]() Capable, by its superior brilliancy and contrast, to subdue the brightness of other blues." Watercolorist John Varley suggested cobalt blue as a good substitution for ultramarine for painting skies, writing in his "List of Colours" from 1818: "Used as a substitute for ultramarine in its brightness of colour, and superior when used in skies and other objects, which require even tints used occasionally in retrieving the brightness of those tints when too heavy, and for tints in drapery, etc.Cobalt blue was the primary blue pigment used for centuries in Chinese blue and white porcelain, beginning in the late eighth or early ninth century.Germany also was famous for production of it, especially the blue colour works ( Blaufarbenwerke) in the Ore Mountains of Saxony. The leading world manufacturer of cobalt blue in the nineteenth century was Benjamin Wegner's Norwegian company Blaafarveværket (" blue colour works" in Dano-Norwegian). Commercial production began in France in 1807. It was independently discovered as a pure alumina-based pigment by Louis Jacques Thénard in 1802. The first recorded use of cobalt blue as a color name in English was in 1777. Transparent glasses are tinted with the silica-based cobalt pigment smalt.Ĭobalt blue in impure forms had long been used in Chinese porcelain. ![]() It is extremely stable and historically has been used as a coloring agent in ceramics (especially Chinese porcelain), jewelry, and paint. Cobalt blue is lighter and less intense than the (iron-cyanide based) pigment Prussian blue. Chemically, cobalt blue pigment is cobalt(II) oxide-aluminium oxide, or cobalt(II) aluminate, CoAl 2O 4. All in all, I might consider buying another of these cars if it had the features and appearance I wanted on one.Cobalt blue is a blue pigment made by sintering cobalt(II) oxide with aluminum(III) oxide (alumina) at 1200 ☌. A few random cons for the Cobalt are: Trunk is hard to open, and lid is heavy mouth of trunk is too small to take in larger items that might otherwise fit backseat is very cramped with little legroom so plan on anyone other than a child or dwarf hating it. UNLIKE the Cavalier, which tend to fall apart piece by piece unless they are babied. I have noticed that the Cobalts have really good body integrity-usually even the 10 year old Cobalts still look good with no rust or bumpers falling off, etc. These cars have a smooth enjoyable ride but if you go over a raised bump you will definitely feel it, and do your best to avoid bumps as the front suspension is somewhat fragile in my opinion. If you do buy any year Chevy Cobalt, make sure you check that it has had the recalls taken care of, as all Cobalts were subject to a few recalls pertaining to the ignition/steering column. The Cobalt is a solid, attractive car that gets good gas mileage. It's possible that an 05-07 could have gotten them as an option, but most likely not. I would recommend getting a 2008-2010 Cobalt if you are concerned about the side crash test scores because … they automatically came with side curtain airbags as a standard feature. The issues they have are similar to ones the Cavalier had, which are a cheap front suspension which will most likely require a few repairs, and a few safety issues, namely side crash test scores (poor without side curtain airbags). Overall, I think Chevy Cobalts are good cars.
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