swcnt-solutions

Metal Matrix Composites

Metal Matrix Composites

Metal Matrix Composites

Single-Walled Carbon Nanotube Reinforced MMC, Lightweight, High Strength, High Thermal & Electrical Conductivity, Wear & Corrosion Resistant, Nanoscale dispersion strengthening, balance lightweight and structural reliability

Conventional metal matrix composites usually suffer from filler agglomeration, weak interfacial bonding, poor ductility, heavy weight and degraded thermal/electrical performance. Our solution adopts single-walled carbon nanotubes (SWCNT) as nano-reinforcement. With proprietary dispersion and compounding technology, SWCNTs are uniformly incorporated into aluminum, copper, magnesium and other metal matrices to produce high-performance MMCs. Benefiting from ultra-high aspect ratio, superior mechanical, thermal and electrical properties of SWCNT, the composite achieves improved tensile strength, modulus and wear resistance at ultra-low loading, while retaining intrinsic thermal & electrical conductivity of metal matrix for lightweight structural and functional components.

Core Advantages

✅ Strengthening at ultra-low loading, preserved ductility Reinforcement realized with tiny addition, unlike high-loading ceramic reinforcements which make matrix brittle. Strength and hardness rise without severe loss of toughness.
✅ Combined high thermal conductivity & electrical conductivity Interconnected SWCNT network enables efficient heat and charge transfer, ideal for parts requiring load bearing, heat dissipation and conductivity at the same time.
✅ Excellent lightweighting, superior specific strength SWCNT density is far lower than metal, components can be lighter under equivalent strength for aerospace, railway and new energy industries.
✅ Improved wear resistance & fatigue resistance, crack inhibition Nanotube bridging effect blunts crack propagation, enhances fatigue life and reduces wear rate.
✅ Tunable interface and consistent batch quality Custom SWCNT surface modification solves poor wettability and interfacial debonding between carbon nanotube and metal matrix. Stable performance batch by batch.
✅ Compatible with mainstream forming processes Suitable for powder metallurgy, die casting, extrusion, friction stir processing and other existing metal manufacturing routes.

 

Item SWCNT Reinforced MMC Ceramic Particle Reinforced MMC
Filler Loading Ultra-low: 0.05–0.5wt% 5–20%
Ductility & Toughness Good toughness retention, low brittleness Ductility drops sharply, brittle
Thermal & Electrical Performance Improved conductivity & thermal conductivity Reduced thermal conductivity, insulation risk
Lightweight Performance Excellent Moderate
Fatigue & Wear Crack bridging, good fatigue resistance Wear resistant but easy crack initiation

Technical Principle

Single-walled carbon nanotubes feature ultra-high tensile strength, modulus and 1D nanostructure. After surface functionalization, they disperse evenly inside metal matrix. Under external load, SWCNTs realize load transfer, crack bridging and pull-out toughening. Interconnected nanotube network also forms continuous channels for heat and electron transport, integrating structural reinforcement and functional properties.

Application Fields

  • Aerospace: Lightweight structural components, thermal baseplates, conductive structural parts
  • New Energy: Copper-based heat-conductive parts, busbar structures, cooling plates
  • Rail Transit: Lightweight wear-resistant brake parts, structural accessories
  • Semiconductor Thermal Management: High-thermal-conductivity base plates, vapor chamber substrates
  • High-end Equipment: Wear-resistant hydraulic components, robot joints, precision transmission parts

Spec & Delivery

  • Optional Matrix: Aluminum, copper, magnesium and custom alloy matrix
  • SWCNT Loading: Custom low-dose reinforcement formula
  • Product Form: Composite powder / preform / semi-finished plate & profile
  • Grade Customization: High-strength structural grade / high thermal conductivity grade / high conductivity functional grade
  • Service: Sample trial → process development → mass supply. Test reports (tensile, fatigue, thermal, wear) available.

Value Proposition

  1. Material upgrade: Achieve lightweight, high strength, high thermal & electrical conductivity without major modification of existing forming processes
  2. Longer service life: Better wear & fatigue performance, reduce replacement and maintenance cost
  3. Product differentiation: Integrated structural-functional new material, outperforming conventional metal materials
  4. Stable formulation: Advanced nano dispersion technology, avoid performance fluctuation caused by nanotube agglomeration

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