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Pottery and porcelain can't be compared, the value must be porcelain, Yuan blue and white Guiguzi jar was auctioned 100 million, a small chicken bowl cup.
It was also auctioned off billion. The most valuable pottery is hundreds of thousands of yuan. Thank you.
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Porcelain is comparatively more valuable than pottery.
The main differences between pottery and porcelain are as follows:
1.The raw materials are different: ordinary clay is used for pottery, and special ceramic raw materials such as kaolin are used for porcelain.
2.The firing temperature is different: the firing temperature of pottery is generally around 800 -1100, and the firing temperature of porcelain is generally above 1200.
3.The degree of hardness is different: the pottery is fired at a low temperature, the texture is relatively coarse, and it is not durable. Porcelain is fired at a high temperature, with a fine and hard texture, and is durable.
4.The appearance is different: the surface of pottery usually has coarse grains, while the surface of porcelain is smoother and finer.
Because porcelain is more demanding to make and more exquisite craftsmanship, it is usually more expensive than pottery.
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The main differences between pottery and porcelain are as follows:
First, the firing temperature is different.
The firing temperature of pottery is generally lower than that of porcelain, and the lowest even reaches below 800 and the highest can reach about 1100. The firing temperature of porcelain is relatively high, most of them are above 1200, and some even reach about 1400.
Second, the degree of hardness is different.
The firing temperature of the pottery is low, the body is not completely sintered, the sound is questioned when striking, the hardness of the carcass is poor, and some can even use a steel knife to cut out grooves. The firing temperature of porcelain is high, the carcass is basically sintered, the sound is crisp when striking, and it is difficult to draw grooves on the surface of the carcass with ordinary steel knives.
Third, the use of raw materials is different.
Pottery can be made from ordinary clay to make billets and fired, while porcelain needs to be made of specific materials and made from kaolin. The firing temperature is at the temperature stage required for pottery, and it can become pottery, for example, white pottery in ancient times was fired in this way. At the temperature at which the kaolin is fired is made, the body becomes porcelain.
However, when the clay used to make pottery is burned, it cannot become porcelain and will be melted into glass.
Fourth, transparency is different.
Even if the body of pottery is relatively thin, it is not translucent. For example, the black pottery of the Longshan culture is as thin as an eggshell, but it is not transparent. The carcass of porcelain, regardless of its thickness or thickness, is translucent.
Fifth, the glaze is different.
There are two types of pottery: unglazed and glazed, and the glaze of the glazed pottery can be melted at a lower firing temperature. There are two kinds of glazes for porcelain, which can be fired with the carcass at a high temperature, or hung with a low-temperature glaze on the high-temperature plain tire and fired at a low temperature for the second time.
Among the above aspects, the most important conditions are raw materials and firing temperature, and several other conditions are closely related to these two conditions. Therefore, once the potter mastered the technique of firing temperature and recognized the difference between kaolin and general clay, he was able to invent porcelain.
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The main difference between porcelain and pottery is the difference in items such as firing temperature and raw materials.
Porcelain is made of porcelain stone, kaolin, quartz, mullite, etc., and is covered with a glass glaze or painted surface. The forming of porcelain is to be fired at a high temperature (about 1280-1400) in the kiln, and the glaze color on the surface of the porcelain will undergo various chemical changes due to the difference in temperature, which is a treasure of Chinese civilization.
Pottery is a utensil made of clay or clay that is kneaded into shape and then fired. A rough suggestion is that the firing temperature of earthenware is between 1000 and 1200 under normal conditions; Stone tools between about 1100 and 1300; Porcelain is between 1200 and 1400. However, the firing method of ceramics in the kiln is not only affected by the maximum temperature reached, but also by the length of the firing time.
Therefore, the maximum temperature in the kiln is usually maintained for a certain period of time"Soak it"pottery, in order to achieve the desired firing of the pottery body.
China is the homeland of porcelain, which is an important creation of the ancient working people. Xie Zhaoqian recorded in "Five Miscellaneous Works": "Today's common saying that the kiln is called the magnetic ware, and the kiln in Cizhou is the most, so the name is extended, such as silver is called Miti, ink is called Mi Mi, and so on."
At that time, the "magnetic" kiln was used as a substitute for kiln, which was caused by the largest output of Cizhou kiln. This is the earliest historical material found to use the title of porcelain.
Extended Content:
The following must be present to be called porcelain:
First, the tire material of porcelain must be porcelain clay. The composition of porcelain clay is mainly kaolin and makeup clay, and contains feldspar, quartz stone and mullite components; Low iron content. After high-temperature firing, the tire color is white, transparent or translucent, and the carcass water absorption rate is less than 1%, or no water absorption.
Second, the carcass of porcelain must be roasted at a high temperature of 1200 1300 to have the physical properties of porcelain. The porcelain clay is different in different places, and the firing temperature is also different, so the sintering shall prevail.
Thirdly, the glaze applied to the surface of the porcelain must be a vitreous glaze fired together with the porcelain at high temperatures.
Pottery is a utensil made of clay or clay that is kneaded into shape and then fired. Pottery has a long history, and simple and crude pottery has been seen since the Neolithic Age. Pottery was used as a daily necessities in ancient times, and is generally collected as a handicraft now.
The invention of pottery is the earliest human use of chemical changes to change the nature of the beginning, is one of the signs of the development of human society from the Paleolithic to the Neolithic.
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People often compare porcelain with pottery and call it ceramic, but they are actually two completely different things. So, what is the difference between pottery and porcelain?
Although pottery and porcelain are two different things, there is a close connection between them. The primitive porcelain was developed from pottery, and pottery was already used in China in the primitive society of the Neolithic Age about 10,000 years ago, and the earliest porcelain fragments found today are from the Shang Dynasty. There are also similarities between pottery and porcelain, which appeared thousands of years later than pottery.
Fired pottery can be glazed or unglazed. The glaze of pottery is not very particular, and the requirements for glaze are not very high. The glaze used for porcelain is also very simple, and the glaze can be hung directly at high temperature while firing porcelain, or it can be hung directly at low temperature.
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Temperature: The temperature of pottery firing is usually between 700 and 800 degrees, the firing temperature of porcelain is 1200 degrees, and the temperature of modern official porcelain firing is above 1100 degrees. Color:
The pottery tires have red, gray, white and other colors, which are opaque and slightly rough in fractures. The color of the porcelain is white, it looks like a semi-transparent wheel, and some are gray, black and other colors, and the fracture is similar to glass under the microscope. <
1. Raw materials: pottery is made of clay, that is, ordinary clay in nature, and the raw material of porcelain is porcelain clay, with kaolin as the main raw material, kaolin is a soft soil with good plasticity and fire resistance, which is the main raw material for firing porcelain. Later, some pottery also began to use kaolin, which also proves from the side that pottery prepared for the emergence of porcelain.
2. Temperature: The temperature of pottery firing is usually between 700 and 800 degrees, and if kaolin is used, the temperature will reach 1000 degrees. The firing temperature of porcelain is 1200 degrees, and the temperature of modern official research porcelain firing is above 1100 degrees.
3. Glaze: The surface of porcelain usually has a high-temperature glaze, which makes the surface of the ware shiny. The surface of the pottery sailstool letter has no glaze or a low-temperature glaze with lead as a solvent.
The high-temperature glaze in the process of porcelain firing is high-calcium lime glaze, and its finished glaze is bright and shiny, while the low-temperature glaze temperature of the coarse surface of the pottery surface is about 800 degrees, and the appearance is relatively rough compared with porcelain. Moreover, the lead on the surface of glazed pottery is harmful to the human body, and this kind of pottery is often used as a funerary object.
4. Water absorption and sound: ordinary people can judge the difference between porcelain and pottery by the sound of water absorption and percussion, porcelain almost does not absorb water, and percussion has a crisp sound, pottery generally has a certain degree of water absorption, and the percussion sound is "dull".
5. Color: The color of porcelain is white, looks like translucent, and some are gray, black and other colors, and the fracture is similar to glass under the microscope; The pottery tires have red, gray, white and other colors, which are opaque and slightly rough in fractures.
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1. The firing temperature is different.
The firing temperature of pottery is lower than that of porcelain, the lowest can be below 800 degrees and the highest is about 1100 degrees, while the firing temperature of porcelain is generally above 1200 degrees and up to 1400 degrees.
2. The raw materials used are different.
Pottery, general clay can be fired, while porcelain requires a specific material: kaolin. When porcelain is fired, if the firing temperature is within the range of pottery, it can also be called pottery, such as ancient white pottery, but the body made of clay used as pottery, even if it is fired to a high temperature of 1200 degrees, it will not become porcelain, and will be burned into glass.
3. The degree of hardness is different.
Because of the low firing temperature of pottery, the body is not completely sintered, the sound is muffled when struck, and the hardness of the carcass is relatively poor, and sometimes traces can be scratched with a steel knife. The firing temperature of porcelain is high, the sintering is sufficient, and the percussion sound is crisp, and it is difficult to draw traces with an ordinary steel knife.
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Ceramics are made of natural clay and various natural minerals as the main raw materials through crushing, mixing, molding and calcination. All utensils made of clay with two different properties of clay and porcelain clay as raw materials, through batching, molding, drying, roasting and other processes can be called ceramics. Ceramics is a general term for pottery, stoneware, and porcelain.
1. The times are different.
As early as the Neolithic Age, pottery was invented in China; With the continuous improvement of pottery technology, the successful firing of white pottery in the Shang Dynasty laid the foundation for the emergence of primitive porcelain.
2. The raw materials are different.
The tire material of the pottery is ordinary clay; The tire material of porcelain is porcelain clay, i.e. kaolin.
The iron content of ceramic tires is generally more than 3%; The iron content of porcelain is generally less than 3%.
3. The firing temperature is different.
The firing temperature of pottery is generally around 900; Porcelain requires a high temperature of 1300 degrees Celsius to fire.
4. The degree of glazing is different.
Pottery is mostly not glazed or glazed at low temperatures; Porcelain is glazed.
5. The water absorption rate is different.
The pottery tire is coarse and sparse, and the water absorption rate of the section is high; The porcelain is roasted at high temperature, the tire is firm and dense, the section basically does not absorb water, and it will make a sonorous metal sound when struck.
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The difference between pottery and porcelain is that one uses materials; Second, the firing temperature is indispensable. Pottery can be made of various mineral clays including porcelain clay, the firing temperature is low, mostly between 700-1000, the carcass is basically sintered, and it is no longer decomposed in water, but the porosity and water absorption rate are higher. When observing the carcass under the microscope, there are very few glass-phase mullite crystals, in other words, there is no porcelainization, and the sound of percussion is dull.
The porcelain uses porcelain clay with a high alumina content, that is, aged clay firing. The firing temperature of porcelain is at least 1100 or more, the fetal quality is basically porcelain, there are a large number of mullite crystals in microscopic observation, the porosity and water absorption rate are low, and the percussion sound is crisp. Western scholars also use the amount of iron content in the fetus as the criterion for judging pottery and porcelain, and they believe that the pottery contains more metal impurities such as iron and is darker in color.
The porcelain has less iron content and is whiter in color. The author does not think so, the amount of iron does not affect the properties of porcelain, but the aesthetic orientation is different. Taking the five famous kilns of the Song Dynasty as an example, Ru, Guan, Ge, Jun and Ding were all porcelain used by the royal family.
Among them, the first four are celadon products, and the iron content of the fetal material exceeds the porcelain standard considered by Westerners, and only the Ding kiln is white porcelain, and the iron content of the fetal material is low.
The difference between pottery and porcelain is not that there is glaze or not, pottery can have glaze, such as Han Dynasty glazed glaze (commonly known as: Han green glaze), Tang Dynasty five-color glazed ware (commonly known as: Tang Sancai) and so on.
Porcelain can also be unglazed, such as white porcelain plain fetal ware, because the texture is white and delicate, so no one will see it as pottery. In fact, from the Shang and Zhou dynasties to the Warring States Period, the so-called hard pottery produced by porcelain stone in southern China has reached the degree of porcelain, and the sound of percussion is crisp and pleasant, which should also belong to the category of primitive porcelain.
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I think naughty refers to some utensils, things that can hold things, and ceramics refers to a wider range, but all the porcelain in our lives.
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Pottery was introduced to the Neolithic with prehistoric humans.
The era of settled life emerged. The earliest pottery fragments found in China were unearthed in some cave sites in the southern region, and their age is about 9,000-10,000 years old! Neolithic red pottery, gray pottery, white pottery, black pottery, its firing temperature is between 800-1000 degrees.
Pottery is unevenly thick, absorbs water, and is prone to breakage.
Porcelain is made of porcelain stone or kaolin and fired at a high temperature of about 1,200 degrees Celsius! The green body is sintered hard, strong and durable; The porcelain is tightly bonded with a layer of glaze on the surface of the tire, which will not fall off, and the glaze surface is smooth and does not absorb water
Easy to clean after contact with dirt.
Actually, this is a good distinction as follows:
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