雾化工艺对弥散铜粉末制备及成形的影响

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文章编号：2096-2983（2025）04-0076-06

引文格式：，．雾化工艺对弥散铜粉末制备及成形的影响[J]．有色金属材料与工程，2025，46（4）：76-81．DOI： 10.13258/j.cnki.nmme.202407020o1.XU Chunwei， LOU Dongge.Influence of atomization process on the preparation and forming of dispersed copper powder[J].Nonferrous Metal Materials and Engineering， 2025， 46（4）： 76-81.

关键词：氮气雾化；水雾化； Al2O3 弥散铜；粉末中图分类号：TG146.11 文献标志码：A

Influence of atomization process on the preparation and forming of dispersed copper powder

XU Chunwei， LOU Dongge （Chinalco Luoyang Copper Processing Co.， Ltd.，Luoyang 471oo3， China）

Abstract： To gain a deper understanding of the influence of atomization processes on the properties and formability of Al2O3 -dispersed copper powders， two atomization methods nitrogen atomization and water atomization were employed to prepare Al2O3 -dispersed copper powders. This study investigated the effects of atomization pressure on the particle size composition， oxidation degree，and apparent density of the powders produced by both methods.Additionally，the cold isostatic pressing （CIP） formability of the nitrogen-atomized and water-atomized Al2O3 -dispersed copper powders was explored.The results indicated that， under an atomization pressure of 10MPa ， the powder yield of -100- mesh water-atomized dispersed copper powders was approximately 30% higher than that of nitrogenatomized powders. Water-atomized powders contained a significantly higher content of Al2O3 ， with the Al2O3 content exceeding twice that of nitrogen-atomized powders at the same particle size. Moreover， the tap density of water-atomized powders was lower， reaching around 70% of that of nitrogen-atomized powders. Under the same particle size and loose packing conditions， the CIP formability of nitrogenatomized dispersed copper powders was inferior to that of water-atomized powders.

Keywords： nitrogen atomization; water atomization; Al2O3 dispersion copper; powder

Al2O3 弥散强化铜因具有优良的高温强度、高导电性和高导热性[-3]，在电阻焊电极、大推力火箭发动机内衬、结晶器、高铁接触线及电磁发射装置等高新技术领域具有广阔的应用前景[47]。（剩余5938字）