Specialized additives used to control microstructure and properties during high-purity molybdenum disilicide powder production
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Purity | ≥99.5% | |
| Bulk Density | 0.5-2.0 g/cm³ | |
| Melting Point | Varies by composition (typically 1500-2500°C) | |
| Particle Size | 0.1-5.0 μm | |
| Moisture Content | <0.1% | |
| Specific Surface Area | 5-50 m²/g | |
| Additive Concentration | 0.1-5.0 wt% |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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The primary function is to control sintering behavior and microstructure development. Additives reduce sintering temperatures, enhance densification, prevent excessive grain growth, and improve final material properties such as strength, toughness, and oxidation resistance.
Additives are typically introduced through wet chemical methods (co-precipitation, sol-gel) or dry blending techniques. The method depends on additive type and desired distribution uniformity, with wet methods providing better homogeneity for critical applications.
Common additives include yttria (Y2O3) for grain boundary strengthening, alumina (Al2O3) for oxidation resistance, silica (SiO2) for liquid phase sintering, and carbon-based additives for oxygen gettering and microstructure control.
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