Buy ZnO 997
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Buy ZnO 997

The ZnO varistor made of Buy ZnO 997 has unique excellent properties such as large nonlinear coefficient, short response time, low residual voltage, small voltage temperature coefficient, and small leakage current. Therefore, the development of Buy ZnO 997 in ZnO varistor The application plays a pivotal role.

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Product Description

Buy ZnO 997

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The ZnO varistor made of Buy ZnO 997 has unique excellent properties such as large nonlinear coefficient, short response time, low residual voltage, small voltage temperature coefficient, and small leakage current. Therefore, the development of Buy ZnO 997 in ZnO varistor The application plays a pivotal role.

 

Product name

Zinc oxide  

Molecular formula

ZnO

CAS NO

1314-13-2

EINECS NO

215-222-5

Density

5.606g/cm3

Molecular weight

81.38

Melting point

1975℃

Boiling Point:

2360ºC

Purity

0.99

Active substance content

0.997

H.S CODE

2817001000

Appearance

White powder or crystal

 

*Room temperature stable Buy ZnO 997 has a wurtzite crystal structure, in which oxygen ions are arranged in a hexagonal close-packed manner, zinc occupies half of the tetrahedral gap, and each ion is not strictly tetrahedral symmetry.

*The hardness of zinc oxide is about 4.5, which is a relatively soft material. The elastic constant of zinc oxide is smaller than that of group III-V semiconductor materials such as gallium nitride.

*Buy ZnO 997 has good thermal stability and thermal conductivity, high boiling point and low thermal expansion coefficient, which is useful in the field of ceramic materials.

*The band gap of Buy ZnO 997 energy band is 3.2-3.4eV, and Buy ZnO 997 should be an insulator at room temperature. Due to the large structural gap, Zn can easily enter the gap and form Frenkel defects. Or because Buy ZnO 997 decomposes at high temperature to produce excessive zinc and ionizes, it enters the gap and forms interstitial ions, causing shared movement of electrons in the structure to form an n-type semiconductor. Among various semiconductor materials with a tetrahedral structure, Buy ZnO 997 has the highest piezoelectric tensor. This characteristic makes zinc oxide one of the important materials for mechanical and electrical coupling.

*Pure Buy ZnO 997 is colorless and transparent. The high energy band gap brings Buy ZnO 997 the advantages of high breakdown voltage, strong ability to maintain electric field, low electronic noise, and high endurable power. Buy ZnO 997 mixed with a certain proportion of magnesium oxide or cadmium oxide will change the energy band gap between 3-4 eV.

Item


Zinc oxide(Zn0 calculating as dry materia)% ≥

99.7

Potassium oxide(K)%≤

0.001

Sodium oxide(K)%≤

0.001

Ferric oxide (Fe)%≤

0.002

Cadmium oxide (Cd)%≤

0.001

Lead oxide(Pb)%≤

0.005

Copper oxide(Cu)%≤

0.0002

Metal content(as Zn)% ≤

NONE

moisture%

0.3

Insoluble Matter in Hci %  ≤

0.004

Loss on ignition % ≤

0.2

PH

7.0-8.0

The average particle size(D50)um ≤

0.5

Residue on sieve (44um)% ≤

0.1

 

The high stability of MST resistance grade Buy ZnO 997 is a high-quality raw material for making ZnO varistor.


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