My system is not decent

Chapter 1608 Jun porcelain is unparalleled, kiln is unparalleled

The traditional Jun porcelain is magnificent and colorful, and the glaze color is not simple. It is even more different from the previous single-color glazed porcelain.

The appearance of Jun kiln porcelain made the porcelain have rose purple, begonia red, eggplant skin purple, chicken blood red, grape purple, cinnabar red, emerald green...

Purple in red, dark blue in purple, white in blue, and blue in white, can be described as colorful.

In addition, the opalescent enamel is crystal clear, plump and jade-like, resembling emerald jade and agate, which makes Jun kiln porcelain more ingenious and beautiful.

So, how is such a beautiful Jun kiln porcelain fired?

The firing temperature of Jun Kiln is no longer low temperature, so it is not low temperature glazed porcelain either.

The firing temperature of Jun kiln has reached between 1350°C and 1380°C.

Inheriting the characteristics of the traditional Jun kiln, such as fine tire quality and gorgeous glaze color, combined with modern aesthetics, the shape of the vessel is plump and exquisite.

The uniquely developed agate glaze water forms a more distinct layering after firing, and more than ten kinds of glaze colors are gorgeous and colorful.

It can be said that Jun Kiln not only pioneered my country's kiln glazed porcelain, but also the shape of Jun Kiln utensils and superb kiln firing technology have always been admired by later generations.

As light as sky blue, as deep as sky blue, and lighter than sky blue is moon white, and has a blue luster like fluorescent light.

The ratio of silicon dioxide to aluminum oxide in Guanjun glaze is about 12.5, and phosphorus pentoxide is between 0.5% and 0.6%.

"Jun porcelain is unparalleled, kiln is unparalleled"!
"One color in the kiln, ten thousand colors out of the kiln"!
"Jun porcelain is invaluable if it is red, but if Jun is not red, it will be poor for a lifetime" and so on.

The content of alumina in the glaze is low, the content of silicon oxide is high, and contains very little phosphorus oxide.

Generally speaking, the biggest difference between the glaze of the Jun kiln and the celadon of other kilns is its glaze crystal structure, which presents a certain fibrous shape.

The trend of the world is getting weaker, and colored porcelain is popular all the time. I don’t know that the ancient meaning is lost, and the value is low. People in Tang and Song Dynasties are still green, Ming and Qing are still red, and recently Western merchants are emphasizing purple. Right?

Because the basic glaze color of Jun porcelain is various shades of blue opalescent glaze.

And its predecessor is obviously Tanglushan kiln flower glaze porcelain.

The characteristics of the chemical composition of Jun glaze: the content of aluminum oxide is low, the content of silicon oxide is high, and it also contains 0.5-0.95% of phosphorus pentoxide.

Ming Zhang Yingwen wrote "Qing Mi Zang" "Junzhou kiln, red like rouge is the best, green like green, purple like ink color is next. Pure color with one or two numbers on the bottom is good, and the variegated ones are not enough. , even the glaze is uniform regardless of the depth of the glaze. Sometimes the thick glaze of Yuan porcelain may have lines, and sometimes there are water waves in the shallow place.”

In the early days of Song Jun, the ratio of silicon dioxide to aluminum oxide was between 11 and 11.4, and phosphorus pentoxide mostly accounted for 0.8%.

The formation of Jun porcelain has its complicated process.

Another feature of Jun kiln is that earthworms run mud lines, which are also recorded in ancient books.

Regarding the commercial value of Jun porcelain, the local folk proverb says: "Enter the Southwest Mountain, Qili Long Street appears, 77 kilns, fireworks cover the sky, merchants go all over the world, making money every day."

The glaze of the Jun kiln is very flat to the touch, but the coarse grains that hang down straight down are called tear marks, and the ones that are bent and folded are called earthworm mud marks, which are the characteristics of Jun kilns. "

Due to the use of reducing atmosphere, the content of iron oxide is reduced, and the fired glaze color is mainly blue opalescent glaze with different shades, and various kiln-changed glaze colors are intricately hidden.

If you use a magnifying glass to observe the glazed surface of Jun kiln porcelain, it is not difficult to find that this fibrous structure is mainly the colored part.

People make certain glazes according to a certain formula, and after the products are fired in the kiln, unexpected colors and shapes are produced.

The particularity of the Jun kiln kiln transformation lies not only in the copper presenting under strong reducing flames, but also in the colorful red color that appears when the copper is reduced from 2 to 0 valence, and the special glaze structure also affects its color rendering.

Such exquisite porcelain, in fact, if you study it carefully, you can also see clues from the documents of the past dynasties.

And this kind of purple, sometimes it looks like thousands of rays of light bursting out from behind the clouds, and sometimes it looks like colorful clouds floating in the clear sky thousands of miles away, with infinite changes.

The beauty of its color tone is inferior to that of ordinary kiln products.

Kiln transformation is a major feature of Jun porcelain.

Jun kiln porcelain is extremely precious, and there are many folk sayings about this.

Xu Zhiheng of the Republic of China "Yin Liu Zhai Shuo Porcelain" "Jun is made of uniform, has been used for a long time, the fetus is fine, the sex is firm, and the body is slightly heavy. The glaze has five colors, thick and moist, with rabbit silk writing. The red like carmine cinnabar is the best. , green as green, emerald as green and purple as ink, followed by those.

For example, "Yuzhou Chronicles" recorded in the Daoguang period of the Qing Dynasty: "Sixty miles southwest of the state (that is, Yuzhou), there is a town called 'Shenhou' in the middle of the chaotic mountains. There is soil, which can be pottery for magnetism."

The porcelain craftsmen of the Jun kiln were the first to use the copper-red technique, which shows that they had fully mastered the reduction technology of copper elements at that time, which was a major achievement in the history of porcelain art.

In long-term practice, porcelain workers have gradually recognized and mastered the fineness of copper red.

Its first appearance was entirely accidental.

Kiln-changing glaze is a typical two-liquid phase and phase-separation glaze.

For example, "Even if you have a rich family, it is not as good as a piece of Jun porcelain."

Although he also said to deal with it.In the Song Dynasty, the purple was like a ripe grape, extremely rich and beautiful, the purple was fixed, and the purple was even, and the utensils were all pure colors.Ancient kiln porcelain, the glaze juice is moist, and the glaze of the uniform kiln is like grease. "

Uniformity is thick and uniform, Yuan porcelain glaze is thick and vertical, uniform body glaze is fine, Yuan porcelain body glaze is thick, uniform glaze is mixed regardless of depth, and Yuan porcelain glaze thickness sometimes has lines, shallow There are still waves everywhere.

The base tone of the glaze color of Jun kiln is cyan, and occasionally there are deep or light red or purple in the cyan.

Kiln variable glaze is a kind of artistic glaze with the most changes, the richest colors and the most complex shapes.

In the Republic of China Liu Zifen's "Bamboo Garden Pottery Talk" "Painting is not important in ancient porcelain, all the utensils are pure color, and people in the shop call it a glaze. In fact, for noble products, a glaze is considered elegant, and blue and white are more colorful than colorful.

The whole body is also covered with pearl dots, rabbit silk patterns, caviar patterns and winding earthworm mud patterns, etc. The vivid and beautiful flow patterns give people infinite space for imagination.

The glaze is divided into two types: one is fine flat glaze and the other is orange peel glaze.Orange peel glaze is also a latecomer, so most of them have purple spots.The unglazed part is the color of sheep liver or sesame paste, which is the real thing.

The red color in the glaze is due to the coloring effect of reduced copper.

People can't explain this phenomenon, so it is called kiln transformation.

Special attention should be paid here, Jun kiln porcelain is the most special kind of celadon that appeared in the Northern Song Dynasty.

Lanpu's "JDZ Taolu" in the Qing Dynasty praised: "There are two kinds of kiln transformers, one is heavenly workmanship, and the other is human ingenuity. It is a kiln change that is directly named as a phantom color and state of matter."

There are large air bubbles between the fibrous crystals and the glassy homogeneous crystals (that is, the non-colored part).

Many of these air bubbles broke through the glaze, resulting in the glaze of Jun kiln porcelain showing the shape of orange peel and brown eyes.

This obviously contributes to the scattering of light on the glaze surface, making the layered sense of color of Jun kiln more abundant.

This is generally due to the addition of lime soda.

(End of this chapter)