Cobalt glass - Wikipedia
网页Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. Cobalt is a very intense colouring agent and very little is required to show a noticeable amount of colour.
Colored glass: From alchemy to empirical chemical design
网页2024年4月19日 · [Image above] The deep blue color of these bottles is due to the inclusion of cobalt oxide in the glass. Credit: cobalt123, Flickr (CC BY-NC-SA 2.0) By Becky Stewart. When humans first started making glass about 4,000 years ago in Mesopotamia, the final color was a mystery to glassmakers until they reached the end of production.
Elements of Color in Stained and Colored Glass - Geology.com
网页Some colors of glass are widely known. Perhaps the best example of this is "cobalt blue" that is produced by adding cobalt oxide to the glass melt. "Vaseline glass" is a fluorescent yellow-green glass that contains small amounts of uranium oxide. "Ruby gold" and "cranberry glass" are red glasses produced by the addition of gold.
How To Identify Cobalt Blue Glass | Storables
网页2024年2月6日 · Cobalt blue glass, often referred to as "smalt" in the art world, is a type of glass that is infused with cobalt oxide during the manufacturing process. This infusion of cobalt oxide is what gives the glass its distinctive deep blue color, ranging from a rich, intense hue to a more subtle, translucent shade.
The Chemistry of Coloured Glass - Compound Interest
网页2015年3月3日 · Coloured glass can actually be produced in a number of ways, but there are three main methods. The first involves introducing transition metal or rare earth metal oxides to the glass. This is usually achieved by the addition of metal oxides to the glass.
Chemistry of Colored Glass - Science Notes and Projects
网页2021年1月31日 · Impurities in the glass may require a decolorizer to precipitate out iron and sulfur compounds so the glass starts out clear. Two common decolorizers are manganese dioxide and cerium oxide. Even then the chemical composition of the glass plays a large role in the colors produced by additives.
Chemistry of Cobalt - Chemistry LibreTexts
网页2023年6月30日 · Cobalt compounds are commonly used to make colored glass, glazes, paints, rubber, inks, cosmetics, and pottery. These compounds compounds include: cobalt oxide, cobalt potassium nitrite, cobalt aluminate, and cobalt ammonium phosphate.
Colored Glass Chemistry: How Does It Work? - ThoughtCo
网页2018年7月27日 · Examples of popular colored glasses include ruby glass (invented in 1679, using gold chloride) and uranium glass (invented in the 1830s, glass that glows in the dark, made using uranium oxide). Sometimes it is necessary to remove unwanted color caused by impurities to make clear glass or to prepare it for coloring.
Cobalt glass - Wikiwand
网页Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. Cobalt is a very intense colouring agent and very little is required to show a noticeable amount of colour.
Cobalt Glass – Uses and Benefits - ThePipingMart Blog
网页2022年12月26日 · Cobalt glass is a type of colored glass made from cobalt oxide, which gives it its distinctive blue hue. It was first created by Englishman George Ravenscroft in 1675 when he discovered that adding cobalt oxide to …