Highly Porous Open Cell Nickel Aluminum Foam
مقدمة
- Nickel aluminum foam (Ni‑Al foam) is a 3D open‑cell porous metal with high porosity, low density and good electrical and thermal conductivity. Its interconnected Ni‑Al skeleton provides large specific surface area and efficient gas/liquid flow channels, making it an excellent substrate for high‑temperature catalysts, gas burners, structured reactors and lightweight filtration media. The foam can be easily cut, machined and formed into custom sizes for laboratory testing and industrial applications.
- Ni‑Al foam offers good oxidation resistance and thermal stability, especially in high‑temperature oxidizing environments, and is widely used as a carrier for nickel‑aluminum and nickel‑based catalysts in petrochemical, environmental and combustion systems. It is suitable for catalytic combustion, VOC treatment, reforming, gas distribution, flame stabilizers and heat‑exchange structures. Using nickel aluminum foam helps improve mass and heat transfer, reduce pressure drop and enhance the efficiency and durability of catalytic and thermal engineering equipment.
المواصفات
| النوع | Open‑cell Ni‑Al alloy foam / nickel‑aluminum porous metal foam (lightweight, conductive and heat‑resistant alloy) |
| Purity / Alloy Base | Ni‑Al alloy system (nickel as main component with aluminum as alloying element; Al content and possible minor elements are adjusted to optimize oxidation resistance, mechanical strength and catalytic performance, depending on specific grade) |
| نموذج | Sheet, plate, strip, block, roll or custom‑cut parts; can be supplied as bulk Ni‑Al foam or as Ni foam with Ni‑Al surface alloy / coating produced by alloying, sintering or other processes, according to application requirements |
| حجم الخلية (PPI) | Commonly around 10–60 PPI (pores per inch) for thermal and catalytic applications; coarse (10–20 PPI), medium (20–40 PPI) and fine (40–60 PPI) structures are available; other pore sizes and gradients can be customized on request |
| السماكة | Typical foam sheets approx. 1–30 mm for catalyst supports, burners and filters; thinner foams for low‑pressure‑drop filters and heat‑transfer elements, thicker sections for structured catalysts and energy‑absorbing components; customized thickness available according to design requirements |
| الحجم والشكل | Standard sheets and blocks (e.g. 50 × 50 mm, 100 × 100 mm, 200 × 300 mm) and discs or rings; can be cut, punched, machined or formed into plates, cylinders, panels and other geometries based on customer drawings or CAD models for reactors, burners and heat‑exchange modules |
| المسامية | Typically about 70% – 95% (adjustable); lower porosity for higher strength and load‑bearing capacity, higher porosity for larger surface area, better gas/liquid permeability and heat/mass transfer; porosity tailored to catalytic, filtration or thermal‑management applications |
| معدل الخلايا المفتوحة | Usually ≥ 90% open‑cell interconnected structure, providing continuous channels for gas or liquid flow, uniform gas distribution and efficient mixing; degree of interconnectivity depends on manufacturing process and pore size |
| كثافة الحجم | Approx. 0.3–1.5 g/cm³ (adjustable via porosity and structure), much lower than dense Ni‑Al alloys while maintaining metallic connectivity and adequate mechanical strength for self‑supported structures |
| Surface Density | Depending on thickness and porosity, typically about 300–10,000 g/m²; lighter foams for low‑mass thermal and catalytic elements, heavier foams for robust structural catalyst carriers and burner cores |
| Specific Surface Area | Large effective surface area due to 3D Ni‑Al skeleton (commonly several hundred to several thousand m²/m³, depending on pore size and porosity), providing ample active surface for catalytic reactions, heat transfer and contact processes |
| Thermal Conductivity (Effective) | Effective thermal conductivity lower than dense Ni‑Al / Ni alloys due to porosity (typically on the order of a few to tens of W/m·K, strongly dependent on porosity and structure), suitable for high‑temperature heat‑exchange, radiant burners and thermal‑management components |
| Electrical Conductivity | Good metallic conductivity, reduced compared with dense nickel due to pores and aluminum content, but sufficient for grounding, heating, ignition and certain electrochemical or catalytic applications where conductive supports are required |
| Mechanical Strength (Compressive) | Compressive strength depends on porosity and pore architecture; typically from a few MPa up to more than 10 MPa for common engineering‑grade foams; higher‑density foams exhibit higher strength and stiffness, while higher‑porosity foams provide better flow characteristics and energy absorption |
| Average Tensile Strength (N/20 mm) | Porous Ni‑Al foam generally shows lower tensile strength than dense alloys; thin strips typically reach tens of N/20 mm, depending on porosity and orientation. Actual values should be verified for each specific product, thickness and application |
| Temperature Resistance | Suitable for operation in oxidizing and hot gas environments at elevated temperatures; Ni‑Al alloys are used for high‑temperature and oxidation‑resistant components, and Ni‑Al foam can be applied in burners, catalytic combustion and heat‑treatment systems (exact temperature limits depend on alloy composition, environment and load) |
| المظهر | Metallic gray to gray‑silver Ni‑Al surface with 3D sponge‑like open‑cell structure; generally uniform pore distribution without obvious defects such as large blind holes, cracks or severe deformation. Surface can be supplied cleaned or pre‑treated for coating and catalytic loading |
| Chemical Composition | Ni‑Al alloy (nickel‑based with aluminum) or Ni foam with Ni‑Al surface alloy layer, depending on manufacturing route; Ni provides basic conductivity and strength, Al improves oxidation resistance, reduces density and can influence catalytic behavior; exact composition defined by product grade or customer specification |
| Corrosion & Oxidation Resistance | Good oxidation resistance at elevated temperatures and in many combustion gases due to the presence of Al; suitable for use in high‑temperature air, flue gases and some corrosive atmospheres. For very aggressive or specific chemical environments, compatibility should be evaluated and additional coatings may be required |
| المرونة | Thin and medium‑porosity foams can be slightly bent, rolled or compressed; stiffness and brittleness increase with thickness and lower porosity. Repeated sharp bending may cause local fracture of the foam skeleton, so handling should follow structural‑foam guidelines |
| Elongation Rate (%) | Macroscopic elongation is limited compared with dense ductile alloys because of the porous network, typically a few percent level depending on structure and direction; design should primarily rely on compressive and bending performance for structural applications |
| Processability | Can be cut, punched, laser‑cut, machined and formed; can be brazed, welded (where applicable) or mechanically fixed into assemblies. Surface is suitable for wash‑coating, impregnation, thermal spraying and other catalyst‑loading or protective‑coating processes |
| Surface Treatment / Coating (Optional) | Optional treatments include degreasing, oxidation pre‑treatment, wash‑coating with ceramic or catalytic layers (e.g. Ni‑based, noble‑metal or perovskite catalysts), and protective coatings to enhance thermal shock resistance, catalytic activity and service life |
| Typical Electrochemical / Catalytic Applications | High‑temperature catalyst supports for reforming, oxidation and combustion; structured catalysts for VOC abatement, exhaust treatment and gas‑phase reactions; porous burners, radiant burner cores and ignition supports where uniform gas distribution and heat release are required |
| Other Industrial Applications | Lightweight heat‑exchange media, high‑temperature gas and liquid filters, flame stabilizers, gas distribution plates, energy‑absorbing and damping structures, thermal‑management components and support structures in petrochemical, metallurgy, power generation and environmental engineering fields |
| Main Features & Advantages | Combines high porosity and large surface area with good metallic conductivity, relatively low density and improved high‑temperature oxidation resistance from Al; 3D interconnected network enables efficient heat and mass transfer with low pressure drop; suitable as a robust, lightweight support for catalysts, burners and thermal‑engineering components where conventional dense metals or ceramics are less efficient |
البُعد (السُمك*الطول*العرض)
| 0.08 مم * 300 مم * 200 مم | 0.2 مم * 200 مم * 300 مم | 0.3 مم * 200 مم * 300 مم |
| 0.5 مم * 200 مم * 300 مم | 0.7 مم * 200 مم * 300 مم | 0.9 مم * 200 مم * 300 مم |
| 1.0 مم * 200 مم * 300 مم | 1.3 مم * 200 مم * 300 مم | 1.5 مم * 200 مم * 300 مم |
| 1.7 مم * 200 مم * 300 مم | 2.0 مم * 200 مم * 300 مم | 5 مم * 200 مم * 300 مم |
| 10 مم * 200 مم * 300 مم | 30 مم * 200 مم * 300 مم | يمكن تخصيص الحجم |
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