一种提高粉末冶金铝合金烧结密度和性能的方法
By adding metal sulfide nanoparticles to aluminum alloy powder, and generating dispersed nano-alumina particles through the sintering process, the problem of insufficient density and performance caused by the oxide film on the surface of aluminum alloy powder is solved, achieving efficient full densification and performance improvement, which is applicable to aerospace, defense, rail transportation and other fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ALTI ADVANCED MATERIALS (XIANGHE) CO LTD
- Filing Date
- 2023-09-08
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the oxide film on the surface of aluminum alloy powder prevents the density, strength and plasticity from being improved in a coordinated manner. Mechanical grinding to destroy the oxide film has defects, or destroying the oxide film by mechanical or chemical methods has problems such as complicated process, high operation difficulty, high cost and low efficiency.
Metal sulfide nanoparticles were prepared by a low-temperature liquid-phase rapid reaction method. After being mixed with aluminum alloy powder, the mixture was pressed and pressureless sintered to generate dispersed nano-alumina particles, which opened the sintering mass transfer channels and promoted full densification.
It achieves full densification of aluminum alloy powder, significantly improving density, strength, and plasticity at room temperature and high temperature, simplifying the process, reducing costs, and making it suitable for large-scale industrial production.
Smart Images
Figure CN117344172B_ABST