This is my new Teajar, covered with a ten moku glaze, tian mu in chinese- fired in reduction ( when the air in the kiln is reduced) and we crash cooled it to get this deep black..
"Tenmoku (also spelled "temmoku" and "temoku") is a dark glaze with a surface that resembles oilspotting.
It is comprised of feldspar, limestone, and iron oxide. The more quickly a piece is cooled, the blacker the glaze will be. Tenmoku takes its name from the 天目 (Mandarin: tiān mù; Japanese: ten moku; ) a mountain temple in China where iron-glazed bowls were used for tea. "Source Wikipeadia
Tenmoku glaze was first documented and used in the mountainous Fuchien Province in China - during the T'ang Dynasty - 618 - 9O7. These years are recognized as the Golden Years of Art and Literature in China. Later, during the Sung Dynasty - 96O - 1279 - this technique of glazing and firing became fine-tuned and perfected."
Tenmoku's are known for their variability. During their heating and cooling, several factors influence the formation of iron crystals within the glaze. A long firing process and a claybody which is also heavily colored with iron increase the opportunity for iron from the clay to be drawn into the glaze. While the glaze is molten, iron can migrate within the glaze to form surface crystals, as in the "oil spot" glaze, or remain in solution deeper within the glaze for a rich glossy color.(- Which is what we did here! -)
A longer cooling time allows for maximum surface crystals. Potters can "fire down" a kiln to help achieve this effect. During a normal firing, the kiln is slowly brought to a maximum temperature by adding fuel, then fueling is stopped and the kiln is allowed to cool slowly by losing heat to the air around it. To fire down a kiln, the potter continues to add a limited amount of fuel after the maximum temperature is reached to slow the cooling process and keep the glazes molten for as long as possible.
Tenmoku glazes can range in color from dark plum (persimmon), to yellow, to brown, to black.
Tenmoku glazes have been used by great art pottery artists in Mashiko, Japan - including Shoji Hamada and English artist Bernard Leach."source e Yakimono.
EN Français ..
Voici ma nouvelle jarre Ten Moku ou Tian Mù en chinois, c'est une glasure à base de Feldspath, carbonate de calcium et d'oxide de fer. Apres une cuisson en atmosphere de 'reduction' où l'oxygène à l'interieur du four est réduite j'ai rapidement refroidi le four pour que cette glasure devienne bien noire .. une puissance se dégage de cette couleur.
C'est pendant la dynastie des Tang que cette glasure à été découverte puis perfectionné sous celle des Sung.
Je l'utilise pour mon Fukamushi préféré le shinzu no ten, Elle pourrait etre également destiné à un dong ding torréfié ou un Tie guan yin bien corsé.
Mais revenons à cette odeur de Fukamushi cha ...
ça sent....... tellement bon...... le fruit des bois.... framboise sauvage mixé au chlorophyle; j'y enfourne mon museau tel un sanglier qui cherche sa truffe.
Publié par Michel à dimanche, mai 11, 2008