Luoyang Dingming Optical Technology Co.,Ltd.

Zinc Sulfide

Product

Product



Number of views:

1000

Zinc Sulfide

规格型号：

category

ZnSe & ZnS

Retail price

0.0

Yuan

Market price

0.0

Yuan

Number of views:

1000

Quantity

Stock:

Email:lydm@dm-optical.com

CONTACT



Product description

Parameters

Material: Zincsulfide

Chemical formula: ZnS

Relative molecular mass:97.44

Traits

White to pale or pale yellow powder. See light color deepening. Steady in dry air, for a long time in the wet air or containing water, the gradual oxidation of zinc sulfate. Soluble in dilute inorganic acid, insoluble in water and alkaline solution. Relative density of 3.98 (α type), (d25) 4.102 (β type). Irritating.

store

Sealed dry and protected from light.

Use

Electronic vacuum coating. X-ray screen. Add trace amounts of radium or new thorium salt to the table for the luminous dial. TV screen. Paint the paint.

Index value of quality control information and quality control items

Quality control items / Item index value

ZnS	≥95.0%
Fe	≤0.00002%
Cu	≤0.00002%
Pb	≤0.0001%
Ni	≤0.00002%
H2O	≤3.0%

CVD zinc sulfide is a chemically inert material, with high purity, insoluble in water, moderate density, easy processing and other characteristics, widely used in infrared windows, fairing and infrared optical components production. As with zinc selenide (ZnSe), zinc sulfide (ZnS) is also a material with good refractive index uniformity and good consistency. It has good image transmission performance in the 8000nm-12000nm wave band, and the material is also higher in the middle infrared band , But as the wavelength becomes shorter, absorption and scattering are enhanced. Compared with zinc selenide (ZNSE), zinc sulfide is low in price, high in hardness, twice as fast as zinc selenide, and is resistant to harsh environments. It is very suitable for use in the manufacture of infrared window。

Physicochemical property

	CVD Zinc sulfide	Multispectral CVD Zinc sulfide
Density(g.cm-3@ 298k)	4.09	4.09
Specific resistance(Ω.Cm)	~1012	~101.3
Melting point(℃)	1827
Chemical purity(%)	99.9996	99.9996
Coefficient of thermal expansion(1/k)	6.6* 10-6@273k	6.3* 10-6@273k
	7.3* 10-6@373k	7.0* 10-6@373k
Heat conductivity(J/k.m.s)	16.7@298k	27.2@298k
Calorific capacity(J/g.k)	0.469@298k	0.515@298k
knoop Hardness(kg/mm2)	200-235	160
Bending strength(Mpa)	103
Young modulus(Gpa)	74.5	74.5
Poisson ratio	0.29	0.28

Optical property

	CVD Zinc sulfide	Multispectral CVD Zinc sulfide
Wave length of transmittance scope	1000nm---14000nm	370nm—14000nm
Inhomogeneity of refractive index（Δn/n）	<7.3* 10-4@10600nm	<0.2* 10-4@632.8nm
Absorption coefficient(1/cm)	0.2 @ 10600nm	0.2 @10600nm
Thermo-optical coeffecient dn/dt(1/k,298-358k)	4.6* 10-5@1150nm	5.43* 10-5@632.8nm
	4.3* 10-5@3390nm	4.21* 10-5@1150nm
	4.1* 10-5@10600nm	3.87* 10-5@3390nm

Variation of refractive index with the wave length

(CVD Zinc sulfide ZNS)20℃

Wave length(nm)	Refractive index(n)	Wave length(nm)	Refractive index(n)
620	2.355	9800	2.203
1000	2.292	10600	2.192
3800	2.253	11400	2.180
5000	2.246	12200	2.167
7000	2.232	13800	2.132
9000	2.212	14200	2.126

Multispectral CVD Zinc sulfide(CLEARTRAN ZnS)20℃

Wave length(nm)	Refractive index(n)	Wave length(nm)	Refractive index(n)
400	2.545	8000	2.223
1010	2.292	9000	2.213
2060	2.264	10000	2.201
3500	2.255	11250	2.183
4500	2.250	12000	2.171
5000	2.247	13000	2.153
Technical requirements		Tolerance zone
Range of sizes		1-400mm
Dimensional tolerance		+0/-0.05mm
Angle tolerance		±2”-±5’´
Surface quality		40/20
Surface accuracy		λ/10 per @633nm
Chamfering of edge		0.1-0.5mm
Material		zinc sulfide
Coating film		8-14 microns or 3-5 microns and other wave bands