Application areas of pure nickel woven mesh

Pure nickel woven mesh (Nickel 200/201) is irreplaceable in extreme working conditions due to its excellent corrosion resistance, high temperature stability and special electromagnetic properties. 

The following are its core application areas and technical analysis:

Six irreplaceable application scenarios

1. Strong alkaline environment filtration (core application)

Scenario: Chlor-alkali industry (50% NaOH electrolyte), viscose fiber production (concentrated alkaline solution)

Advantages: Alkali corrosion-resistant rolled stainless steel (316L is only resistant to 80°C in >40% NaOH, and nickel mesh is resistant to 120°C), with a dense NiO passivation film formed on the surface, and the service life is more than 3 times that of titanium mesh

Common specifications: 80-200 mesh plain weave, wire diameter 0.10.3mm

2. High-temperature fluorine-containing gas filtration

Scenario: Nuclear fuel processing (UF₆ gas), lithium battery positive electrode material sintering furnace (containing HF flue gas)

Performance: Tolerant to HF concentration ≤5% at 800°C (30 minutes perforation of stainless steel); low thermal expansion coefficient (13.3×10⁻⁶/℃), high temperature dimensional stability

Structure: multi-layer sintered felt (enhanced creep resistance)

3. Electrolytic electrode core material

Application: cathode mesh of ion membrane electrolyzer (replacing traditional wire mesh), cathode end plate conductive meshfor water electrolysis to produce hydrogen

Advantages: hydrogen evolution overpotential is 200mV lower than stainless steel → energy consumption is reduced by 10%; resistivity is 6.8×10⁻⁸Ω·m (1/4 of titanium)

4. Electromagnetic shielding body

Scene: spacecraft cabin shielding, high-precision laboratory (anti-electromagnetic pulse)

Principle: nickel's magnetic permeability (μ=110) absorbs + reflects electromagnetic waves

80 mesh nickel mesh has a shielding efficiency of ＞60dB for 1GHz microwaves Process: twill weave (flexibility↑)

5. Molten metal filtration

Application: high-temperature alloy casting (nickel-based single crystal blades), precious metal purification

Performance: melting point 1455℃, can be used for 1500℃ molten steel filtration for a long time; Intercept ≥50μm inclusions (alumina/carbide)

Structure: three-dimensional nickel foam (porosity 90%)

6. Special reactor lining

Scenarios: hydrogenation reactor (pharmaceutical/pesticide synthesis), nuclear fusion experimental device

Function: anti-hydrogen embrittlement (nickel hydrogen absorption rate is only 1/10 of stainless steel); resistant to hydrazine (N₂H₄), liquid ammonia and other reducing media corrosion

Performance comparison with stainless steel mesh (advantages)

Note: Nickel mesh is inferior to stainless steel in sulfur-containing media (H₂S), so be careful when choosing!

Summary: Pure nickel mesh is the ultimate choice for extreme chemical environments and special electrochemical scenarios. Its value lies not in versatility, but in its irreplaceability in the following scenarios:

✅        Boiling concentrated alkali filtration

✅        High-temperature fluoride interception

✅        Electrolytic energy-saving electrode

✅        Extreme electromagnetic shielding

When selecting, the medium composition must be strictly evaluated (avoid sulfur!), and low-carbon Ni201 (carbon ≤0.02%) is preferred to prevent intergranular corrosion.