High Purity Alumina Ceramic Tube Used in Industry

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Guangzhou
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100 pc
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100000 pc/month

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Product Description:

 

Product Description

Alumina ceramic is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness. Alumina has a high melting point, high hardness, although mechanical strength is reduced at temperatures above 1000 C. Due to the relatively large coefficient of thermal expansion, thermal shock resistance is reduced.

Alumina is also an electrically insulating material, with a high electrical resistivity, increasing with purity. Good chemical stability of alumina leads to high corrosion resistance as well. It is insoluble in water and only slightly soluble in strong acid and alkaline solutions. Testing has shown that the low chemical solubility of alumina ceramics components makes them highly resistant to chemical corrosion. This is what makes high purity alumina the material of choice for components in a wide range of industrial applications.

Ceramic tubes are used when electrical insulation is necessary in high heat applications. This makes them useful for supporting electric heating elements in ovens, heaters and furnaces. Ceramics hold their shape and size under pressure. This is important in switching applications where the ceramic is used to open and close electrical contacts in a thermostat or pressure switch. Ceramic parts are very abrasion resistant and offer long life in applications where other materials would wear out quickly.

Main Physical Properties:

1. Good electrical insulation
2. High mechanical strength
3. Excellent wear resistance
4. Excellent corrosion resistance
5. Low dielectric constant

Main Applications:

1. Pump seals and other components
2. Wear resistant inserts
3. Insulating washers or bushings
4. Semiconductor components
5. Aerospace components
6. Automotive sensors
7. Electrical or electronic insulators



Data Sheet

 

Characteristics

Unit

95 Al2O3

99 Al2O3

ZrO2

GPSi3N4

BN

Glass Ceramic

Crystal Structure

-

hexagonal

hexagonal

tetragonal

hexagonal

hexagonal

-

Color

-

white

ivory

white

gray

white

white

Density

g/cm³

3.65

3.88

5.95

3.22

2.26

2.55

Water Absorption

%

0

0

0

0

0.0-1.0

0

Young's Modulus

Gpa

280

350

205

295

670

65

Vickers Hardness

Gpa

14

20

12

18-20

-

-

Flexural Strength

Mpa

280

300

900

650

51

100

Compressive Strength

Mpa

2000

2500

2200

2200

230

500

Thermal Conductivity 

W/(m•K)

18-25

30

2.2

25

20

1.70

Thermal shock resistance

ΔT(C°)

220

180-200

280-350

450-650

>1500

25-100

Max. Working Temperature 

1500

1700

850

1200

960

800

Volume Resistivity

Ω . cm

>10^15

>10^14

>10^12

>10^14

10^13

10^16

Dielectric Constant

-

9.50

9.80

26

8.20

4.08

6.02

Dielectric Strength

kV/mm

16

22

-

16

375

40

 

FAQ

We have organized several common questions for our clients, may help you sincerely

 

--------What is the application of Ceramic Tubes?

1. Pump seals and other components
2. Wear resistant inserts
3. Insulating washers or bushings
4. Semiconductor components
5. Aerospace components
6. Automotive sensors
 

----------What advantages of Ceramic Tubes?

1. Good electrical insulation
2. High mechanical strength
3. Excellent wear resistance
4. Excellent corrosion resistance
5. Low dielectric constant

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Q:Now there are alumina ceramic knives on the market. What is the difference between this and the zirconia ceramic knives?
Dongguan Mingrui zirconia ceramics factory: the ceramic knife on the market is mostly a kind of nano material "zirconia is processed. With zirconia + alumina powder, with 300 tons of heavy pressure with the mold, pressed into a knife blank, sintered at 2000 degrees Celsius, and then polished with diamond, then with the handle of the finished ceramic knife. The blade is made of ceramic blade new high-tech nanotechnology, sharpness is ten times more than the steel, so the ceramic knife has high hardness, high density, high temperature resistance, anti magnetic and oxidation.Ceramic knives are made of precision ceramic high pressure, so it is called ceramic knives. Ceramic knife is known as "aristocratic knife", as a modern high-tech products, has the advantages of traditional metal cutting tools unmatched; using high-tech nano zirconia as raw material, so the ceramic knife is also called the "gem zirconium knife", elegant and luxurious its remarkable
Q:Are ceramic fibers the same as aluminum silicate fibers?
Aluminum silicate is in accordance with the chemical title, SI, O, AL is its main component; and the main component of ceramic is also the above three components, so the use of ceramic fiber is more user-friendly
Q:What do you mean by a ceramic cup in a fish bowl?
Biochemical filtration, the cultivation of nitrifying bacteria, water quality is better ~ dirt decomposition faster ~!
Q:What do you call "t"?
Looks like a tree, with 4 petals and the receptacle, the magnetic switch pedal is also in the shape of a leaf, a variety of switches, buttons, instruments and auxiliary tools are casting operation design and installation on the body.
Q:What is the difference between ceramic tile and ceramic tile?
The difference between ceramic tiles and ceramic tiles lies mainly in water absorption. Water absorption is generally less than 0.5% for tiles, more than 10% for pottery bricks, between the two half porcelain. Usually all kinds of polished tiles, glazed tile, sanitary ware, porcelain is the most general, bibulous rate is less than or equal to 0.5%; small antique brick, tile (the wall), crystal tiles, wear-resistant bricks, Yaguang brick is brick, half tiles, bibulous rate is 0.5% tiles, ceramic pipe, decorative tile, glass products the general is ceramic, the water absorption rate of >10%. This is the important difference between ceramic tile and ceramic tile
Q:Ceramics are not crystalsTell me the exact answer. Thank you for your cooperation!
Most substance are crystals.Ceramic materials are generally crystals, because the ceramic contains many kinds of atoms, crystal structure is more complexIf you can't understand it, think about ruby.
Q:Ceramic tableware can be put into the microwave oven at?
(2) vessels not in use.Metal ware. Aluminum pot, cookware and stainless steel pots and other metal containers, the microwave can not penetrate, and encounter the furnace wall will spark phenomenon of metal, so it can not be used. Note that metal ware is also liable to cause damage to microwave ovens.Lacquer ware. Lacquer on lacquer ware may peel and melt when heated and produce harmful substances. Containers may also cause cracks. Please do not use them.Heat resistant plastic container. Ordinary plastic containers have poor heat resistance and can not be used in microwave cooking vessels.Heat resistant glass container. When food is fed, the temperature may be high in cooking, which can easily cause the glass container to break. Therefore, the glass containers which are not heat-resistant can not be used. Organic glassware is also unsuitable for use.Grass, willow, wood, bamboo and paper products. These containers may be used for short periods of heating, but may be burned when heated for a long time. Do not use them.
Q:What is the ceramic material?
General ceramic raw materials with high hardness, but poor plasticity. In addition to the use of food, decoration, also plays an important role in the development of science and technology. Ceramic raw material is the vast resources of clay, the original quartz and feldspar after processing.
Q:The production process of Ceramic Decal
The stretching and plate makingN Ceramic Decal Screen on layer thickness is relatively high, so not to fine level to determine the quality of printed ceramic decal, nor high mesh screen will be able to solve the problem. The number and wire pattern, must use high mesh screen. There are 3 shortcomings with high mesh screen and the cost is high; the layer is thin, hard to show the ceramic color hue; the easy plugging. Standard screen is 300 T polyester mesh, the screen printed chromatography is close to the requirements of ceramic pigments, and screen and pigment costs are low, the printing of the most ideal production.N generally, printing cover oil with 60 ~ 80 mesh screen printing; screen dot pattern, with 300 ~ 380 mesh screen; ceramic decal printing gold paste with 380 mesh screen; glass decal printing gold paste with 350 mesh screen (glass paper requires good hiding power). In general, more than 200 mesh screen mesh should be imported.
Q:The new hot ceramic perm, a few days can wash your hair?
HelloGeneral hair automatic repair is 28 hours, that is to say, one day you can wash the barber shop, call you three days without shampoo, but also afraid that after washing will be deformed, but as long as the hot good, after 28 hours on it

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