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Cross-Border Advantages of Irregular Powders — Adapting to Pressureless and High-Pressure Processes
2026-03-02
Irregular pre-alloyed powders show unique advantages in both hot-press and pressureless sintering, with different working mechanisms.
In Hot-Press Sintering: High-Efficiency Reactors
With densification guaranteed by high pressure, the focus turns to alloy microstructure and interface quality. The large specific surface area provides sufficient atomic diffusion channels, enabling fast and uniform alloying of Fe, Cu, Sn, Ni and stronger chemical bonding with diamond.
In Pressureless Sintering: Structural Reinforcers
Without external pressure, the powder’s own structure compensates for insufficient densification:
- Higher packing density under vibration for fewer green-body pores.
- 3D mechanical interlocking like mortise-and-tenon structure for higher strength and toughness.
- Higher surface activity accelerating alloying to heal micro-pores and improve matrix strength.
Conclusion
In summary, irregular pre-alloyed powders can flexibly adapt to both high-pressure and pressureless sintering, delivering more stable performance, stronger diamond retention and more reliable tool life. They are an ideal material choice for high-performance diamond tools.
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