一种低氧超细锆粉及其制备方法
By constructing ammonium polyacrylate anchoring points and a calcium ion crosslinking layer on the surface of zirconium powder, combined with a polyethylene glycol outer network, the problem of particle adhesion and agglomeration during the deoxidation process of ultrafine zirconium powder was solved, achieving a synergistic improvement in low oxygen content and ultrafine particle size, thus enhancing the processing performance of the powder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHUZHOU RUNFENG NEW MATERIAL CO LTD
- Filing Date
- 2026-04-01
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, metallurgical adhesion and agglomeration easily occur between particles during the deoxidation process of ultrafine zirconium powder calcium hydride, resulting in increased particle size and wider particle size distribution, making it impossible to simultaneously achieve low oxygen content and ultrafine dispersibility.
Ammonium polyacrylate anchoring points are constructed on the surface of zirconium powder particles and combined with in-situ crosslinking of calcium ions to form a stable confinement layer. Subsequently, a long and short chain polyethylene glycol outer isolation network is constructed. Through the kinetic matching of calcium hydride deoxygenation reaction, particle adhesion and agglomeration are inhibited.
It achieves deep deoxidation of low-oxygen ultrafine zirconium powder, maintains ultrafine particle size and good dispersibility, improves the overall processing performance of powder, and exhibits excellent loose density, tap density and flowability, with good adaptability.
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