Zirconium target material series
High purity zirconium targets and evaporation materials Zr+Hf≥99.98%
Chemical composition (ppm)

Element Fe Cr Mo Al Ti Mn Ni U
Max(ppm) 100 5 10 5 10 5 12 1
Element Cu Sn Sb W Pb Bi Mg P
Max(ppm) 5 5 5 5 5 5 5 5
Element Si S Nb B Cd Be Ca Li
Max(ppm) 10 5 5 5 1 5 5 5
Element Zn Na V K N C H O
Max(ppm) 5 5 5 5 50 50 20 300
Element Hf
Max(ppm) Hf≤0.03% or Hf≤3%

Applications: semiconductor, electronics, medical, liquid crystal, photovoltaic and other coating areas

R60702 zirconium target

Chemical composition%

The element name Zr+Hf Hf(max) Fe+Cr(max) O H(max) N(max) C(max)
Percentage content ≥99.2 4.5 0.2 0.16 0.005 0.025 0.05

Application: decoration, glass, function and other coating areas

Corrosion resistance of zirconium

1. The corrosion rate of industrial pure zirconium in all boiling concentrations of hydrochloric acid is less than 0.025mm/a.

Table 1 comparison of corrosion rates of zirconium and other metallic materials in 20% hydrochloric acid

material The experimental time/h Corrosion rate
zirconium 28 0.018
304 0.5 >8890
316 0.5 1145
B-2 28 0.43
C-276 28 0.9

2. Zirconium has excellent corrosion resistance in sulfuric acid with a concentration of less than 70%.In addition, because stainless steel and nickel alloy can not be used in high temperature, 20% sulfuric acid and 40-60% of the boiling temperature of sulfuric acid range, zirconium in sulfuric acid environment has an irreplaceable role.

Table 2 comparison of corrosion rates between zirconium and stainless steel and nickel alloys

H₂SO₄Percent content centigrade temperature corrosion rate(mm/a)
Zr 304 316 B-2 C-276
10 102 0.0025 52 14.2 0.025 0.018
30 108 0.0025 >127 >127 0.053 1.4
55 132 0.0025 >104 >104 0.048 7.5
55 168 0.5 / / 0.94 54
2 225 0 / / 0.38 1
5 232 0.0025 / / 2.8 3.9
10 225 0.018 / / 26 16.8
15 225 0.06 / / / /

3.below 200℃, not more than 90% of nitric acid, zirconium has good corrosion resistance.

4.Zirconium is more resistant to corrosion in all concentrations, even boiling caustic solutions, than tantalum, niobium, and titanium

 

Crystallization of hafnium

Crystalline hafnium is a high purity hafnium produced by iodization

Purity Hf+Zr≥99.99%, diameter 20-40mm.The length can be cut according to customer’s request

Chemical composition                
Element Fe Cr Mo Al Ti Mn Ni U
Max(ppm) 100 5 10 5 10 5 12 1
Element Cu Sn Sb W Pb Bi Mg P
Max(ppm) 5 5 5 5 5 5 5 5
Element Si S Nb B Cd Be Ca Li
Max(ppm) 10 5 5 5 1 5 5 5
Element Zn Na V K N C H O
Max(ppm) 5 5 5 5 50 50 20 100
Element Zr
Max(ppm) Zr≤0.2% or Zr≤0.3% or Zr≤0.5% 

 

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