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Vacuum furnaces can be classified not only by process methods but also by different chamber (hot zone/heating zone) materials. Brother Furnace's vacuum furnaces commonly feature chamber materials including ceramic fiber, stainless steel, graphite, molybdenum foil, tungsten mesh, etc.
In practice, although most chamber materials can be applied to various heat treatment processes (sintering, brazing, quenching, annealing, etc.), the selection of different chamber types is primarily based on specific process requirements, temperature ranges, atmosphere conditions, and the characteristics of the materials being processed.
| Furnace Chamber Type | Maximum Temperature | Core Advantages | Suitable Sintering Materials |
|---|---|---|---|
| Molybdenum Foil Chamber | 1800°C | High strength at elevated temperatures, no contamination | High-temperature alloys (Nickel-based/Cobalt-based), Silicon Carbide (SiC) Ceramics, Silicon Nitride (Si₃N₄) Ceramics, High-purity metals (Tantalum, Niobium) |
| Ceramic Fiber Chamber | 1600°C | Fast heating/cooling, energy-efficient | Alumina (Al₂O₃) Ceramics, Zirconia (ZrO₂) Ceramics, Magnetic Materials (Ferrites), Small-to-medium-sized metal parts (Stainless Steel, Titanium Alloys) |
| Tungsten Wire Mesh Chamber | 2300°C | Extreme high-temperature resistance, corrosion resistance | Refractory metals (Tungsten, Molybdenum), Tantalum Carbide (TaC), Boron Nitride (BN), Ultra-high-temperature Ceramics (Zirconium Diboride-Silicon Carbide, ZrB₂-SiC) |
| Graphite Chamber | 2200°C | Ultra-high temperature, cost-effective, thermal shock resistant | Tungsten Carbide (WC), Titanium Carbide (TiC), Graphene Composites, Carbon-Carbon (C/C) Composites |
| Heat-resistant Steel Chamber | 1200°C | Corrosion-resistant, easy to process, low cost | Copper-based alloys, Aluminum alloys, Low-melting-point metal powders (Tin, Lead), Magnetic alloys (NdFeB) |
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