Bubuk aluminium murni
Serbuk aluminium murni mengandung 99% atau kandungan aluminium yang lebih tinggi. Ini memberikan kepadatan rendah yang dikombinasikan dengan keuletan, konduktivitas, dan ketahanan korosi yang baik.
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Daftar Isi
Gambaran Umum Bubuk Aluminium Murni
Serbuk aluminium murni mengandung 99% atau kandungan aluminium yang lebih tinggi. Ini memberikan kepadatan rendah yang dikombinasikan dengan keuletan, konduktivitas, dan ketahanan korosi yang baik.
Key properties and advantages of pure aluminum powder include:
Pure Aluminum Powder Properties and Characteristics
Properti | Detail |
---|---|
Komposisi | 99% or higher Al content |
Kepadatan | 2,7 g/cc |
Bentuk partikel | Bulat, tidak beraturan |
Kisaran ukuran | 1-150 mikron |
Kepadatan yang tampak | Kepadatan sebenarnya hingga 50% |
Konduktivitas | Konduktivitas listrik dan termal yang sangat baik |
Ketahanan korosi | Good due to protective oxide layer |
Pure aluminum powder is suitable for applications like thermite welding, diamond tools, conductive coatings, pyrotechnics, and metal injection molding.
Pure Aluminum Powder Composition
Typical composition of pure aluminum powder:
Pure Aluminum Powder Composition
Elemen | Berat % |
---|---|
Aluminium (Al) | 99% min |
Silikon (Si) | 0,5% maks |
Besi (Fe) | 0,5% maks |
Tembaga (Cu) | 0,05% maks |
Mangan (Mn) | 0,05% maks |
Magnesium (Mg) | 0,05% maks |
Kotoran lainnya | 0,05% maks |
- Aluminum provides low density, ductility and conductivity
- Impurity levels of other elements are carefully controlled
- High aluminum purity provides optimal electrical and thermal conductivity
The high aluminum content ensures excellent conductivity combined with good corrosion resistance and moderate strength.
Pure Aluminum Powder Physical Properties
Pure Aluminum Powder Physical Properties
Properti | Nilai-nilai |
---|---|
Kepadatan | 2,7 g/cc |
Titik leleh | 660°C |
Konduktivitas termal | 237 W/mK |
Resistivitas listrik | 2.65 μΩ-cm |
CTE | 23.1 x 10^-6 /K |
Reflectivity | 87% at 400 nm wavelength |
- Very low density compared to most metals
- High reflectivity and thermal conductivity
- Resistivitas listrik yang rendah memberikan konduktivitas yang tinggi
- CTE yang relatif tinggi memerlukan pertimbangan desain
- Maintains strength up to moderately high temperatures
The properties make pure aluminum suitable for lightweight applications needing electrical/thermal conductivity.
Pure Aluminum Powder Mechanical Properties
Pure Aluminum Powder Mechanical Properties
Properti | Nilai-nilai |
---|---|
Kekuatan tarik | 90-100 MPa |
Kekuatan luluh | 35-45 MPa |
Perpanjangan | 35-40% |
Kekerasan | 25-35 HB |
Kekuatan kelelahan | 50-90 MPa |
Kekuatan geser | 60-65 MPa |
- Relatively low tensile and yield strength
- Very high elongation provides excellent ductility
- Low hardness compared to most metals
- High fatigue strength suited for cyclic loading
- Properties can be enhanced through alloying additions
The properties make pure aluminum suitable for soft, ductile applications requiring conductivity and formability.
Pure Aluminum Powder Applications
Typical applications of pure aluminum powder include:
Pure Aluminum Powder Applications
Industri | Penggunaan |
---|---|
Thermite welding | Rail welding, metal joining |
Manufaktur aditif | Low strength components |
Explosives and pyrotechnics | Thermite compositions |
Powder coatings | Conductive and resistant coatings |
Alat-alat berlian | Metal matrix with diamond particles |
Fireworks | Fuel and pyrotechnic compositions |
Beberapa penggunaan produk tertentu:
- Thermite mixtures for in-situ metal joining and welding
- Low melting point casting alloys
- Electrically conductive coatings and RF shielding
- Aluminum-diamond tools for stone cutting
- Flash powder and pyrotechnic compositions
- Metal injection molding of non-structural parts
The ductility, conductivity and reactivity make pure aluminum suitable for these niche applications.
Pure Aluminum Powder Specifications
Key specifications for pure aluminum powder include:
Pure Aluminum Powder Specifications
Standar | Deskripsi |
---|---|
ASTM B787 | Standard for pure aluminum powders |
ASTM B859 | Specs for aluminum and aluminum alloy powders |
DIN 1718-1 | Designation system for aluminum and aluminum alloys |
GJB320B | Chinese military standard for aluminum and aluminum alloy powders |
Ini menentukan:
- Minimum 99% aluminum content
- Limits on impurities like Fe, Si
- Powder characteristics like apparent density and particle size distribution
- Approved production methods like atomization
- Protokol pengambilan sampel dan pengujian
Meeting the standards ensures suitability for applications needing high purity aluminum powder.
Pure Aluminum Powder Particle Sizes
Pure Aluminum Powder Particle Size Distribution
Ukuran | Karakteristik |
---|---|
1-10 mikron | Ultrafine grade used in printing pastes |
10-45 mikron | Fine grade suitable for coatings, pressing |
45-150 mikron | Coarse grade offers better flowability |
- Finer sizes provide a smooth finish and high reactivity
- Coarser powder has improved flow for automated processing
- Both spherical and irregular particle shapes are available
- Size distribution depends on targeted use
Controlling particle size distribution optimizes processing behavior, density, reactivity, and finish.
Pure Aluminum Powder Apparent Density
Pure Aluminum Powder Apparent Density
Kepadatan Nyata | Detail |
---|---|
Kepadatan sebenarnya hingga 50% | For irregular morphology powder |
1.3-1.7 g/cc | Higher for spherical powder |
- Spherical powder shape provides higher apparent density
- Irregular particles have lower density around 30-40%
- Higher density improves powder flow and compactibility
- Nilai hingga 60% dimungkinkan dengan bubuk bulat yang dioptimalkan
Kepadatan semu yang lebih tinggi menghasilkan produktivitas manufaktur dan kualitas komponen yang lebih baik.
Pure Aluminum Powder Production
Pure Aluminum Powder Production
Metode | Detail |
---|---|
Atomisasi | Molten aluminum stream broken into fine droplets that solidify into powder |
Bola Milling | Mechanical milling classifies coarse powder into fine powder |
Anil | Removes internal stresses and improves powder compressibility |
Pengayakan | Mengklasifikasikan bubuk ke dalam fraksi ukuran yang berbeda |
- Atomization allows large volume production with controlled particle sizes
- Milling provides lower cost size reduction of coarse powder
- Annealing and sieving provide customized powder sizes and shapes
Combination of methods produces high purity aluminum powder with application-specific characteristics.
Pure Aluminum Powder Pricing
Pure Aluminum Powder Pricing
Faktor | Dampak pada Harga |
---|---|
Kemurnian | Tingkat kemurnian yang lebih tinggi lebih mahal |
Ukuran partikel | Bubuk ultrafine lebih mahal |
Volume pesanan | Bulk orders get discounted pricing |
Metode produksi | Complex methods increase cost |
Pengemasan | Special packaging adds cost |
Harga Indikatif
- Fine pure aluminum powder: $3-6 per kg
- Coarse pure aluminum powder: $2-4 per kg
- Large volume pricing can be up to 30% lower
Pricing depends on purity, particle size, order quantity, production method and customization requirements.
Pure Aluminum Powder Suppliers
Pure Aluminum Powder Suppliers
Perusahaan | Lokasi |
---|---|
Advanced Chemical Company | AMERIKA SERIKAT |
Logam Mikron | AMERIKA SERIKAT |
Baohua Metal Materials | Cina |
Hengxing Metallurgical | Cina |
Shanghai ShuiDing Powder Material | Cina |
Reade Advanced Materials | AMERIKA SERIKAT |
Faktor-faktor pemilihan pemasok:
- Purity levels and grades available
- Kapasitas produksi dan waktu tunggu
- Kisaran ukuran partikel rata-rata
- Customization of particle distribution
- Packaging options
- Pricing levels based on order quantities
- Compliance with international standards
Pure Aluminum Powder Handling and Storage
Pure Aluminum Powder Handling
Rekomendasi | Alasan |
---|---|
Use proper ventilation | Avoid concentrated dust environment |
Employ grounding systems | Prevent static discharge during handling |
Limit moisture exposure | Prevents oxidation of particles |
Ikuti protokol yang aman | Mengurangi bahaya kesehatan dan kebakaran |
Hindari sumber penyalaan | Flammable powder risk |
Gunakan alat yang tidak menimbulkan percikan api | Mencegah kemungkinan penyalaan |
Rekomendasi Penyimpanan
- Store in dry, inert sealed containers
- Maintain storage temperatures below 27°C
- Limit exposure to oxidizers like nitric acid
Proper precautions during handling and storage help preserve purity and prevent oxidation or ignition risks.
Pure Aluminum Powder Inspection and Testing
Pure Aluminum Powder Testing
Tes | Detail |
---|---|
Analisis kimia | XRF or ICP testing verifies composition |
Distribusi ukuran partikel | Analisis difraksi laser |
Kepadatan yang tampak | Uji flowmeter hall sesuai standar ASTM B212 |
Morfologi bubuk | Pencitraan SEM dari bentuk partikel |
Analisis laju aliran | Laju aliran gravitasi melalui corong yang ditentukan |
Pengukuran kelembaban | Kerugian pada uji pengeringan |
Testing ensures the powder meets the required purity levels, particle characteristics, density specifications, morphology and flowability per applicable standards.
Pure Aluminum Powder Pros and Cons
Advantages of Pure Aluminum Powder
- Low density provides lightweight properties
- Konduktivitas listrik dan termal yang sangat baik
- Ketahanan korosi yang baik
- High ductility and excellent formability
- Dapat didaur ulang dan ramah lingkungan
- Cost-effective compared to other conductive powders
Limitations of Pure Aluminum Powder
- Low strength limits load bearing structural applications
- Moderate high temperature mechanical strength
- Requires protective coatings in corrosive environments
- Sensitive to contamination from moisture and other powders
- Pyrophoric nature requires careful handling
- Gradually oxidizes over time if uncoated
Comparison With Al-Mg Alloy Powder
Pure Al vs Al-Mg Alloy Powder
Parameter | Al murni | Al-Mg |
---|---|---|
Kepadatan | 2,7 g/cc | 2,7 g/cc |
Kekuatan | 90-100 MPa | 150-220 MPa |
Konduktivitas | Luar biasa | Bagus. |
Ketahanan korosi | Bagus. | Luar biasa |
Biaya | Rendah | Tinggi |
Penggunaan | Thermite welding, pyrotechnics | Structural components |
- Pure Al offers better conductivity and lower cost
- Al-Mg alloy provides higher strength
- Pure Al suited for electrical applications and pyrotechnics
- Al-Mg preferred for structural lightweight components
Pure Aluminum Powder FAQs
Q: What are the main applications of pure aluminum powder?
A: Main applications include thermite welding, conductive coatings, pyrotechnic compositions, diamond tools, metal injection molding of non-structural parts, and low-melting casting alloys.
Q: What precautions should be taken when working with pure aluminum powder?
A: Recommended precautions include proper ventilation, avoiding ignition sources, explosion-proof equipment, grounding systems, non-sparking tools, protective gear, safe protocols, and inert storage sealed away from contaminants.
Q: How does pure aluminum powder differ from aluminum alloy powders?
A: Pure aluminum has 99% or higher Al content while alloy powders contain other elements like magnesium, silicon, zinc. Pure Al offers high conductivity but lower strength than alloys.
Q: What affects the properties of pure aluminum powder components?
A: Key factors are apparent density, particle size distribution, compaction pressure, sintering parameters, impurities, and final part porosity.
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