Nickel-Coated Alumina Powder (Ni@Al2O3)
Ni@Al2O3 powder combines a hard ceramic alumina core with a ductile nickel shell, giving cold-spray feedstock that deposits wear-resistant metal-ceramic composite coatings without the high heat input of conventional thermal spray.
70-80 wt% NiCoating Content
~65-70 µmParticle Size Range
Custom Made-to-OrderGrade, Size & Quantity
WorldwideExport Shipping
Nickel-Coated Alumina Powder — Grades & Specifications
Nickel-Coated Alumina Powder (Ni@Al2O3) powder is supplied across a range of grades, particle sizes and coating ratios. The options below are typical; specify your target values in the request form and we will confirm availability, lead time and pricing.
| Material | Nickel-Coated Alumina Powder (Ni@Al2O3) |
|---|---|
| Category | Metal-Coated Powder |
| Core material | Aluminum oxide (alumina) (CAS 1344-28-1) |
| Coating / shell material | Nickel (CAS 7440-02-0) |
| Coating content | Research-grade cold-spray feedstock commonly reported at 70 wt% Ni/30 wt% Al2O3 or 80 wt% Ni/20 wt% Al2O3 |
| Particle size | Alumina precursor core approximately 40-50 um mean diameter; finished nickel-clad powder grows to roughly 65-70 um mean particle size |
| Morphology | Clad/composite structure; lower Ni-content grades show a porous cauliflower-like nickel layer, higher Ni-content grades show a thicker, denser metallic nickel layer |
| Appearance | Gray metallic powder, consistent with nickel-clad ceramic feedstocks |
| Coating Hardness & Oxidation Resistance | Deposited coatings tested at 520°C show good oxidation resistance, with microhardness increasing substantially with alumina content (from roughly 175 HV for pure Ni coatings up to roughly 338 HV with higher alumina loading) |
| Typical applications | Cold-Spray Cermet Wear Coatings, Gas Turbine Sealant Coatings, Solar Absorber Coatings, High-Temperature Oxidation-Resistant Layers |
Applications by Industry
Cold-Spray Cermet Wear CoatingsDeposited to build hard, wear-resistant nickel-alumina composite surfaces on steel substrates.
Gas Turbine Sealant CoatingsUsed for wear-resistant sealing surfaces in power-generation turbine components.
Solar Absorber CoatingsApplied for thermal-functional coatings in concentrated solar power components.
High-Temperature Oxidation-Resistant LayersProvides oxidation protection in elevated-temperature power-generation environments.
Steam-Reforming Catalyst PrecursorsNickel-alumina composition serves as a catalyst system base for hydrogen production via steam reforming.
Repair & Build-Up CoatingsCold-spray deposition restores worn metal-ceramic composite surfaces without high heat input.
Particle Size & Mesh Conversion
Reference for converting between US mesh and microns/millimetres. Figures are nominal sieve openings and may vary slightly by standard.
| Mesh (US) | Micron (µm) | mm | Inch | Remarks |
|---|---|---|---|---|
| 3 | 6730 | 6.730 | 0.2650 | |
| 4 | 4760 | 4.760 | 0.1870 | |
| 5 | 4000 | 4.000 | 0.1570 | |
| 6 | 3360 | 3.360 | 0.1320 | |
| 7 | 2830 | 2.830 | 0.1110 | |
| 8 | 2380 | 2.380 | 0.0937 | |
| 10 | 2000 | 2.000 | 0.0787 | |
| 12 | 1680 | 1.680 | 0.0661 | |
| 14 | 1410 | 1.410 | 0.0555 | |
| 16 | 1190 | 1.190 | 0.0469 | |
| 18 | 1000 | 1.000 | 0.0394 | |
| 20 | 841 | 0.841 | 0.0331 | |
| 25 | 707 | 0.707 | 0.0278 | |
| 30 | 595 | 0.595 | 0.0234 | |
| 35 | 500 | 0.500 | 0.0197 | |
| 40 | 420 | 0.420 | 0.0165 | |
| 45 | 354 | 0.354 | 0.0138 | |
| 50 | 297 | 0.297 | 0.0117 | |
| 60 | 250 | 0.250 | 0.0098 | |
| 70 | 210 | 0.210 | 0.0083 | |
| 80 | 177 | 0.177 | 0.0070 | |
| 100 | 149 | 0.149 | 0.0059 | |
| 120 | 125 | 0.125 | 0.0049 | |
| 140 | 105 | 0.105 | 0.0041 | |
| — | 100 | 0.100 | 0.0039 | Sand |
| 170 | 88 | 0.088 | 0.0035 | |
| 200 | 74 | 0.074 | 0.0029 | |
| — | 70 | 0.070 | 0.0027 | |
| 230 | 63 | 0.063 | 0.0024 | Human hair |
| — | 55 | 0.055 | 0.00217 | |
| 270 | 53 | 0.053 | 0.0021 | |
| — | 50 | 0.050 | 0.00197 | |
| 325 | 44 | 0.044 | 0.0017 | |
| — | 40 | 0.040 | 0.00157 | |
| 400 | 37 | 0.037 | 0.0015 | |
| 550 | 25 | 0.025 | 0.00099 | |
| 625 | 20 | 0.020 | 0.00079 | |
| 1200 | 12 | 0.012 | 0.0005 | |
| 1250 | 10 | 0.010 | 0.000394 | |
| — | 7 | 0.007 | 0.000276 | |
| 2500 | 5 | 0.005 | 0.000197 | |
| 4800 | 3 | 0.003 | 0.000118 | |
| 5000 | 2.5 | 0.0025 | 0.000099 | Bacteria (approx.) |
| 12000 | 1 | 0.001 | 0.0000394 |
Information Required for Quotation
- Grade or type
- Particle size (micron or mesh)
- Coating content / core-shell ratio
- Quantity
- Application environment
- Required delivery country
Lead time depends on grade, particle size, quantity and processing requirements. Export availability can be reviewed based on destination country and material type. A Certificate of Analysis can be provided on request.
Request a Quote or Custom Order
Tell us your grade, particle size and quantity. We typically reply within one business day.
Frequently Asked Questions
What is the coating content of Nickel-Coated Alumina Powder?
Research-grade cold-spray feedstock commonly reported at 70 wt% Ni/30 wt% Al2O3 or 80 wt% Ni/20 wt% Al2O3 Other coating ratios can be reviewed on request depending on your application and quantity.
What particle sizes can you supply?
Alumina precursor core approximately 40-50 um mean diameter; finished nickel-clad powder grows to roughly 65-70 um mean particle size Mesh-based requirements are also accepted; a mesh-to-micron conversion reference is provided on the page.
Can Nickel-Coated Alumina Powder be made to custom specifications?
Yes. Nickel-Coated Alumina Powder is produced to order — core/shell ratio, particle size, morphology and packaging can be customized to your specification. Select “Custom Order” in the request form and provide your target values.
What is the minimum order quantity (MOQ)?
Order quantity is flexible and small quantities and prototype requests are welcome. Please state your required quantity in the form for an accurate quotation.
Can you export and ship Nickel-Coated Alumina Powder internationally?
Yes, export inquiries are welcome. Availability and shipping are reviewed based on destination country, grade and quantity.
Do you provide a Certificate of Analysis (COA) or technical data?
A Certificate of Analysis and technical data can be provided on request for supplied lots.
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Request a Quote for Nickel-Coated Alumina Powder
Send us your grade, particle size, quantity and application. We will review availability, quotation and lead time. Small quantities, prototypes and custom made-to-order specifications are welcome.