JKY OPTICS
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Contact:Ms. Xia
Tel:15215065771
Email:cherry2016IRoptics@163.com
Add:Danzishi International Community, Nan'an District, Chongqing

Hot pressed zinc sulfide


1. brief introduction:


Hot-pressed polycrystalline zinc sulfide is made of high-purity zinc sulfide and pressed under high temperature and vacuum conditions. Good thermal properties. Because it can be directly pressed into spherical windows of various curvature radii and large-sized sheets, it is widely used in infrared windows of various sizes. In addition, the product is also a high-quality coating material.


Our company can achieve a maximum diameter of 200 mm.


2. Specification

Mechanical   property data

density

4.09 g/cm3

Rockwell hardness

255 kg/mm2

Flexural strength

114MPa

Fracture toughness

0.699MPa·m1/2

Young's modulus

98.2+/-0.7Pa

Poisson's ratio

0.29+/-0.01

Thermal properties

Melting point

1830℃

Coefficient of expansion(20-500℃)

7.256×10-6K-1

Thermal conductivity(27℃)

18.774W/m·K

Dielectric constant

8.347

Optical properties



Wavelength (microns)

7

8

9

10

Refractive index

2.2254

2.2215

2.2083

2.1986

Transmittance

71.5

73.2

73.2

72.0



3.Standard sizes:(1) Flat plate: Φ10-Φ300mm, various specifications with thickness within 15mm.

(2) Spherical lens : diameter Φ250mm, sag height 90mm, thickness within 13mm of various specifications.



Hot-pressed polycrystalline magnesium fluoride

1. Brief description:Hot-pressed polycrystalline magnesium fluoride has the advantages of high infrared transmittance, low thermal emissivity, good mechanical properties, and low preparation cost, and is the preferred material for mid-wave infrared imaging.At present, this product is mainly used in infrared point light source equipment, but with the rapid development of infrared imaging technology, it will be widely used in infrared imaging in the future.2. Performance indicators:


Mechanical property   data

Density

3.177 g/cm3

Rockwell hardness

≥571kg/mm2

Flexural strength

110MPa

Fracture toughness

0.998+/-0.005MPa·m1/2

Young's modulus

114.1+/-1.1Pa

Poisson's ratio

0.27/-0.01

Thermal properties

Melting point

1255oC

Coefficient of expansion(20-500℃)

12.884×10-6K-1

Thermal conductivity(56℃)

15.3

Thermal conductivity(108℃)

12.98

Thermal conductivity(179℃)

10.88

Dielectric constant

8.347

Optical properties



Wavelength (microns)

2.5

3.0

3.5

4.0

4.5

5.0

5.5

Refractive index

1.3692

1.3647

1.3594

1.3522

1.3452

1.3342

1.3282

Transmittance

73.8

86.4

91.3

95.1

95.2

71.0

96.8



3. Specifications:

(1) Flat plate: Φ10-Φ300mm, various specifications with thickness within 15mm.

(2) Spherical lens: diameter Φ250mm, sag height 90mm, thickness within 13mm of various specifications.




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Danzishi International Community, Nan'an District, Chongqing
CONTACT
Ms. Xia
E-MAIL
15215065771@163.com
TELPHONE
152 1506 5771