Nickel 85/Boron 15 Alloy,Ni15B Alloy,Nickel Boron Alloy,E FORU

### **Nickel-Boron Alloy (Ni₈₅B₁₅) - Nickel Boride Hard Alloy** #### **Overview** **Nickel 85/Boron 15 Alloy (Ni₈₅B₁₅)** is a nickel-boride intermetallic compound characterized by extreme hardness, excellent wear resistance, and good high-temperature stability. This alloy belongs to the family of transition metal borides that form hard, refractory compounds with unique combination of metallic and covalent bonding. The primary phase in this composition is Ni₂B, with possible presence of Ni₃B and Ni₄B₃ phases depending on processing conditions. The material finds its main applications in surface engineering and hard facing technologies. --- #### **Chemical Composition (Weight % / Atomic %)** | Element | Weight % | Atomic % | | :--- | :--- | :--- | | **Nickel (Ni)** | **83-87%** | **~85%** | | **Boron (B)** | **13-17%** | **~15%** | | **Impurities** | **< 0.5%** | **< 0.5%** | *Typical impurities include Fe, Si, C, O, with strict control to maintain performance properties.* --- #### **Physical & Mechanical Properties** | Property | Value / Description | | | :--- | | **Density** | **7.90-8.10 g/cm³** | | **Melting Point** | **~1150-1250 °C** (2102-2282 °F) | | **Crystal Structure** | Orthorhombic (Ni₂B primary phase) | | **Microhardness** | **1100-1400 HV** (extremely hard) | | **Vickers Hardness** | 1000-1300 HV | | **Fracture Toughness** | **3-8 MPa·m¹/²** (brittle material) | | **Young's Modulus** | 280-320 GPa | | **Compressive Strength** | 2000-3000 MPa | | **Electrical Resistivity** | 80-120 μΩ·cm | | **Thermal Conductivity** | 15-25 W/m·K | | **Thermal Expansion Coefficient** | 10.5-12.5 × 10⁻⁶/°C | | **Oxidation Resistance** | Moderate up to 800°C | --- #### **Key Characteristics & Applications** **Key Characteristics:** 1. **Extreme Hardness**: One of the hardest nickel-based materials available 2. **Excellent Wear Resistance**: Superior resistance to abrasive and adhesive wear 3. **Brittle Nature**: Limited ductility and fracture toughness 4. **Good Corrosion Resistance**: Resists many corrosive environments, though inferior to pure nickel 5. **High Temperature Stability**: Maintains hardness and structure up to 800°C **Typical Applications:** - **Hard Facing Applications**: Wear-resistant coatings on industrial equipment - **Thermal Spray Coatings**: HVOF and plasma spray coatings for wear protection - **Braze Alloy Additive**: Hardness-enhancing component in brazing alloys - **Cutting Tools**: Binder phase in cubic boron nitride (cBN) cutting tools - **Mining Equipment**: Wear plates, crusher components, and drill bits - **Automotive Applications**: Wear-resistant coatings on engine components - **Chemical Processing**: Valves, pumps, and fittings requiring wear and corrosion resistance --- #### **Manufacturing & Processing Methods** | Method | Description | Applications | | :--- | :--- | :--- | | **Gas Atomization** | High-pressure gas disintegration of melt | Thermal spray powders | | **Mechanical Alloying** | High-energy ball milling | Composite materials | | **Sintering** | Powder consolidation at high temperature | Bulk components | | **Thermal Spray** | HVOF, plasma spray deposition | Surface coatings | | **Laser Cladding** | Directed energy deposition | Repair and hard facing | --- #### **International Standards & Specifications** | Category | Designation | Description | | :--- | :--- | :--- | | **Thermal Spray Powders** | **AWS A5.13** | Filler metal and welding electrode specifications | | **Hard Facing Alloys** | **AMS 4775** | Nickel alloy brazing filler metals | | **ISO** | **ISO 14920** | Thermal spraying - Spraying and fusing of self-fluxing alloys | | **Manufacturer Standards** | **Proprietary** | Company-specific specifications for Ni-B alloys | *Note: Ni₈₅B₁₅ is typically supplied under manufacturer-specific specifications rather than generic international standards, with properties tailored to specific application requirements.* --- #### **Health & Safety Considerations** - **Dust Hazards**: Powder form requires dust explosion protection - **Processing**: Requires controlled atmosphere to prevent oxidation - **Machining**: Must be handled as a brittle material with proper safety protocols --- #### **Summary** **Nickel 85/Boron 15 Alloy (Ni₈₅B₁₅)** represents a specialized hard facing material offering exceptional hardness and wear resistance derived from its nickel-boride intermetallic structure. While limited by its inherent brittleness in bulk structural applications, it serves as an excellent coating material where extreme surface hardness and wear resistance are required. The alloy's primary value lies in surface engineering applications across mining, manufacturing, and chemical processing industries, where it significantly extends component service life under severe abrasive and erosive conditions. Continued development focuses on improving toughness through composite approaches while maintaining the exceptional hardness characteristics.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3216 gallon liquid totes Special package is available on request.