My system is not decent

Chapter 1086 Green is Blue
The real malachite green glaze is a low-temperature colored glaze with copper as the colorant.

It originated from folk kilns in Song and Yuan Dynasties, and was first seen in Cizhou kilns in Song Dynasty.

During the Chenghua period of the Ming Dynasty, the Jingzhen kiln was mature.

There are two firing methods, one is to directly hang the glaze on the plain body, and the glaze surface is easy to peel off;
The second method is to cover the glaze on the white glaze ware and fire it, so that the glaze surface is less likely to peel off.

However, because the glaze is directly hung on the billet in the early stage, and it is fired once in the kiln at a low temperature, the product is relatively thick, and the glaze surface is easy to peel off.

Until the establishment of the official kiln system in the early Ming Dynasty, the firing of malachite green glaze entered a new stage.

The firing process is not difficult to say. Generally, white glaze is applied on the formed plain body first, fired at high temperature in the kiln, and then malachite green glaze is covered on the white glaze. After the second low-temperature firing, the glaze surface is colored. Bright and beautiful, those who peel off the glaze are rare.

Of course, this is already a high requirement for craftsman skills.

The Qing Dynasty's anonymous book "Notes of Nanyao" said: "The two colors of Falan and Facui are old and only available in Chengyao, and jadeite is the best."

That is to say, people in the Qing Dynasty also believed that the peacock green glaze was fired in the Chenghua period in the Ming Dynasty.

However, judging from the handed down products and unearthed objects, it has been fired in Xuande, and continued to be fired in Chenghua, Hongzhi, Zhengde, and Jiajing dynasties.

Of course, the peacock green glaze is quite similar to the green on the peacock's feathers, which also confirms the metaphysics that blue is green and green is blue, and the real peacock green glaze has this amazing beauty!

At this point, you must pay attention when firing, because if one is not good, you will burn peacock green, but you will burn peacock blue.

Of course, the appearance of peacock green must be due to peacock blue.

At that time, peacock blue porcelain was fired, and peacock green was fired by accident. The world is so bizarre.

There are two shades of malachite green glaze color: the darker one is light green, and the glaze color is bright and gorgeous;
The shallow ones are mainly used in combination with colored glazes, such as eggplant skin purple and other glazes, often with malachite green.

If malachite green is applied to blue and white, the color of blue and white will turn black.

The malachite green glaze fired in Jingzhen in the Qing Dynasty reached the highest level in history. It has three important features in appearance.

The first important feature is the green and bright glaze color, which is extremely rare in ancient Chinese ceramic glazes.

In ancient China, there were many kinds of green glazes colored with copper, such as the green glazes of Tang Sancai, Qionglai Kiln and Shachang Kiln.

They come in various shades, but none can compare to Malachite Green Glaze.

Some peacock green glazes have blue in the green, some people call it "peacock blue". It is generally believed that the blue is the effect of cobalt. The results of chemical analysis show that most of the peacock blue has nothing to do with cobalt.

The second important feature is that the glaze layer is clear, with few bubbles, crystallization and unmelted glaze.

For example, the Qing Kangxi Peacock Green Glazed Plum Vase with Cover on display at the Jiudelou Exhibition is an example.

The third important feature is that the glaze is densely covered with caviar-sized fine slices, which is very distinctive.

Anyone who studies ancient ceramics knows that the glaze color of ceramics is related to many technological factors.

When it comes to craftsmanship, there are many aspects involved.

The first is the type and concentration of the colorant, followed by the firing atmosphere, firing temperature and thickness of the glaze layer.

Chen Wenzhe only knew about these before, but he was not familiar with them.

But it doesn't matter, if he wants to learn, as long as he wants to.

Therefore, in just an instant, a large amount of knowledge poured into his brain.

But this time, it poured into his brain systematically, making him learn faster and more conveniently.

Sui Hou's Pearl is indeed more useful. It has been able to accurately push and inherit knowledge according to Chen Wenzhe's needs.

Just like this time, he wanted to learn the manufacturing process of malachite green glazed porcelain, and Suihou Zhizhu sent a batch of professional counterpart information accurately.

In just a split second, Chen Wenzhe received a lot of useful moments.

The most special among them is some modern chemical analysis, which can also be obtained on ancient porcelain tablets?

Although he felt very puzzled, Chen Wenzhe had no intention of rejecting the knowledge related to peacock green glaze. As long as Suihou Zhizhu dared to give it, he would dare to learn it.

As for where this knowledge comes from, it really doesn't matter.

"Civilization Inheritance System, I forgot the name!"

After receiving a large amount of knowledge inheritance, Chen Wenzhe laughed.

The external manifestation of Sui Hou Zhizhu, or in other words, when he first came into contact with him, it was displayed in front of him in a systematic way.

Since it is a civilization inheritance system, it naturally has many inheritances of civilization?
These are not important, what is important is the inheritance of these civilizations, which should be helpful to Chen Wenzhe.

Colorant?Co-solvent?The ancients certainly did not understand these terms.

However, although they don't understand these terms, they definitely know how to use them.

However, as a modern person, Chen Wenzhe is very clear that the chemical composition of the flux also has a great influence on the color of the colorant.

The green and bright glaze color of Huaxia malachite green glaze is not only related to the large amount of divalent copper ions in the formula, but also closely related to the large amount of potassium ions.

The peacock green glaze of the Huaxia and Qing Dynasties is a high-alkali glaze with a high potassium content made of nitrate and quartz sand.

If lead oxide, feldspar, plant ash or other fluxes are used instead of nitrate, other conditions remain the same, and the hue of malachite green cannot be burned anyway.

The green glazes of Shachang Kiln and Qionglai Kiln are the best examples.

Although they are also colored by divalent copper ions, they are not high-alkali glazes, and they also contain a small amount of opacifying agents tin dioxide and phosphorus pentoxide.

Therefore, it is impossible to burn out a hue like malachite green.

Malachite green glazes in Persia and Iraq have low potassium oxide content but high sodium oxide content.

Potassium oxide and sodium oxide are both alkali metal oxides, and their chemical properties and molecular structures are quite similar, so they have similar effects on glaze color.

Potassium oxide is a strong fluxing agent. If it is used in a high amount, coupled with a high firing temperature, the high-temperature viscosity of the glaze will become very low.

In this case, the air bubbles in the glaze layer will all escape, and the granular glaze materials such as quartz will all melt into the glaze, making the glaze fully vitrified.

The complete vitrification of the glaze, coupled with the presence of a large amount of divalent copper ions, and the background of the pure white porcelain body, result in a green glaze with a clear and bright glaze layer, just like emeralds, very cute.

In this way, copper is used as a coloring agent to obtain malachite green instead of peacock blue.

Therefore, the main coloring agent of malachite green glaze is copper, and the copper content is very high.

These are the key technology, if you don't understand these, you will never be able to make good malachite green glazed porcelain.

For example, the malachite green glazed porcelain of the Cizhou Kiln in the Song Dynasty had a copper content of 5.6%, the festoons of the Ming Dynasty were 3.4~5.2%, the malachite green glaze was as high as 9.0% in the Qing Dynasty, and the Persian pottery unearthed in Yangshi was 2.5~3.7%. .

The high copper content contributes to a more verdant glaze.

Special attention should be paid here, the iron element is also the key to the color of porcelain, if there is too much, there will be conflicts.

(End of this chapter)