bone black的意思|示意

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Bone black, also known as animal black, is a form of carbon black used in art and industry that is produced by burning bones or various other animal products. It has a deep, glossy black color and an oily consistency and is used as an artist's pigmant, in lithography, and as a protective coating on metal, stone, and other surfaces.

Bone black is produced when bone is heated to very high temperatures in the absence of oxygen, a process known as pyrolysis. The bone is initially heated to a temperature of 500-600°C, which causes the proteins and acids to be removed, leaving behind carbon and other elements. The carbon is then heated above 900°C in an oxidizing atmosphere, causing the carbon to combine with oxygen and form a black pigment.

This type of black pigment is used in many ways. It is popular as an artist's pigmant, and is used in oil, acrylic, and watercolor paints, as well as in printing inks and lithography. Additionally, it is used as a protective coating on metal, stone, and other surfaces. Bone black can also be used as a filter in certain chemical processes, and as a binding agent in pottery glazes.

Bone black has many advantages as a pigment. It has a deep black color, it is non-toxic, and it does not fade over time. Additionally, it is very versatile, and can be used for a number of different purposes.