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All colours of Greek black-red vase painting are produced by the different concentrations of iron in the clay, and the different degrees to which that iron is oxidised during firing. Iron has the special feature of forming oxides of various colours, including grey Iron(II) oxide (FeO), red Iron(III) oxide (Fe 2 O 3), and deep black magnetite ...
Pieces can be grey, red, or white, painted with iron oxide or decorated with glaze. Shino glaze ( 志野釉 , Shino uwagusuri ) is a generic term for a family of pottery glazes . They tend to range in color from milky white to orange, sometimes with charcoal grey spotting, known as "carbon trap" which is the trapping of carbon in the glaze ...
Alumina, often derived from clay, stiffens the molten glaze to prevent it from running off the piece. [7] Colorants, such as iron oxide, copper carbonate or cobalt carbonate, [7] and sometimes opacifiers including tin oxide and zirconium oxide, are used to modify the visual appearance of the fired glaze.
China painting, or porcelain painting, [a] is the decoration of glazed porcelain objects, such as plates, bowls, vases or statues. The body of the object may be hard-paste porcelain , developed in China in the 7th or 8th century, or soft-paste porcelain (often bone china ), developed in 18th-century Europe.
Terracotta flower pots with terracotta tiles in the background Due to its porosity, fired earthenware, with a water absorption of 5-8%, must be glazed to be watertight. [ 11 ] Earthenware has lower mechanical strength than bone china, porcelain or stoneware, and consequently articles are commonly made in thicker cross-section, although they are ...
Underglaze transfers are a technique that involves screenprinting or free handing a pattern onto a transfer paper (often rice paper or newspaper) which is then placed, dampened, and burnished onto the surface of a leather-hard piece of clay (similar to how a lick-and-stick tattoo might be applied). [21]
A suspension of clay, clay body or glaze in water.( Slip casting A technique for shaping an article by pouring a deflocculated, high-solids content slip into a porous, often plaster, mould Slipware pottery where decoration in slip is a main feature. Includes slip-painting, slip-trailing, and many other techniques Slop Another name for slurry ...
A series of analytical studies have shown that the striking black gloss with a metallic sheen, so characteristic of Greek pottery, emerged from the colloidal fraction of an illitic clay with very low calcium oxide content. This clay slip was rich in iron oxides and hydroxides, differentiating from that used for the body of the vase in terms of ...
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