(1. 湖南大學(xué) 材料科學(xué)與工程學(xué)院， 長(zhǎng)沙 410082；
2. 中南大學(xué) 材料科學(xué)與工程系，長(zhǎng)沙 410083)
摘 要: 在傳統(tǒng)氣體霧化的基礎(chǔ)上，提出了一種新型的氣體霧化制粉方法，即在霧化氣流中添加NaCl粉末， 提高氣流的沖擊動(dòng)量。通過對(duì)6-6-3青銅, Al，Al-Si，Pb，Sn，Zn等多種材料進(jìn)行的霧化實(shí)驗(yàn)結(jié)果表明，該方法能夠有效減小霧化粉末的粒度，與傳統(tǒng)氣體霧化相比，平均粒度可減小50%， 此外還可大幅提高細(xì)粉收得率， 且不會(huì)過多影響粉末的純度。
關(guān)鍵字: 氣體霧化；金屬粉末制備
（1. School of Materials Science and Engineering，
Hunan University，Changsha 410082, P.R.China;
2. Department of Materials Science and Engineering，
Central South University，Changsha 410083, P.R.China）
Abstract:Based on traditional gas atomization， a novel gas atomization method for powder preparation was provided. NaCl powder was added in the flowing gas in order to increase the impact momentum of gas stream. According to the experiments on various materials，including 6-6-3 bronze， Al，Al-Si，Pb，Sn，Zn， the results indicate that this novel method is effective in decreasing particle size (compared with traditional gas atomization， the mean particle size is deceased by 50%)， increasing the yield of fine powder，while will not deteriorate the purity of the powder.
Key words: gas atomization; metal powder preparation
