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Performance and Material Selection for Metallic Substrates in Extreme Heat
Catalytic converter substrate. High-temperature applications. Gasoline and diesel engines. Turbocharged engines. Heavy-duty vehicles. Metallic substrates.
FeCrAl alloys commonly used. Aluminum-based alloys also applied. Material choice affects thermal stability, mechanical strength, and durability. Substrate wall thickness, cell density, and geometry influence heat distribution. Thin walls. High surface area.
Efficient exhaust flow. Thick walls. Improved mechanical resistance. Thermal cycling. Repeated heating and cooling generate stress. Substrate must withstand expansion and contraction.
Coating adhesion critical. Oxidation-resistant metals reduce degradation. Mounting and system integration affect vibration and thermal load. High-flow systems demand stronger metallic cores. Performance testing includes thermal shock, flow resistance, vibration endurance.
Proper substrate material, geometry, and coating ensure long-term reliability in extreme heat environments.
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Common Applications of Catalytic Converter Substrates
Catalytic converter substrate. Gasoline engines. Three-way converters. CO, HC, NOx reduction. Diesel engines. DOC, DPF, SCR. Oxidation, particle filtration, selective reduction. Turbo engines.
Thermal load. Vibration. Heavy trucks, off-road, generators. Metallic-core substrates. Mass flow.
Thermal cycling. Marine engines. Stationary equipment. Material, cell density, wall thickness, coating.
Metallic substrate. Light-off, mechanical strength, vibration. Ceramic substrate. Thermal resistance, long-term stability. Mounting brackets. Hangers. Flow distribution. Flow resistance. Thermal shock. Vibration test.