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PREP法制備高Nb-TiAl粉末工藝研究及粒度預(yù)測
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1.西安賽隆金屬材料有限責(zé)任公司;2.西北有色金屬研究院 金屬多孔材料國家重點(diǎn)實(shí)驗(yàn)室

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Study on Process and particle size prediction on High-Nb TiAl Powder Produced by PREP
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1.Xi’an Sailong Metal Materials Co,Ltd,Xi´2.an China;3.State Key Laboratory for Porous Metals Materials,Northwest Institute for Nonferrous Metal Research,Xi´4.an

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    摘要:

    本文系統(tǒng)研究了等離子旋轉(zhuǎn)電極工藝參數(shù)對(duì)制備高Nb-TiAl粉末粒度及分布的影響，決定制備粉末粒度大小的主要工藝為電極棒料轉(zhuǎn)速和棒料直徑。提高電極棒料轉(zhuǎn)速和直徑，都有利于提高高Nb-TiAl金粉末中細(xì)粉（小于75μm）的收率，并使粉末的粒度分布由單峰分布轉(zhuǎn)變?yōu)殡p峰分布。通過分析制備高Nb-TiAl粉末顆粒的形成條件，結(jié)合材料及制粉工藝參數(shù)，并對(duì)比實(shí)際粉末顆粒平均粒徑，修正計(jì)算公式，獲得等離子旋轉(zhuǎn)電極工藝制備高Nb-TiAl粉末平均粒徑的經(jīng)驗(yàn)公式。

    Abstract:

    Plasma Rotation Electrode Process (PREP) was used to produce high-Nb TiAl powder,the effects of process parameters on the particles sizes and distribution were systematically studied. The results showed that the particle size of as-produced high-Nb TiAl powde is mainly determined by the rotating speed and diameter of electrode bars. High electrode rotating speed and large electrode diameters lead to fine powder (less than 75μm), and the particles distribution from a unimodal distribution change to a bimodal distribution. Through analyzing the forming conditions of powder particle, putting in the high-Nb TiAl materials constants and PREP parameters, and comparing the calculate values with actual particles, an empirical formula was developed to calculate mean particle diameters of high-Nb TiAl powder produced by PREP.

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賀衛(wèi)衛(wèi),湯慧萍,陳斌科,向長淑,劉海彥,賈文鵬. PREP法制備高Nb-TiAl粉末工藝研究及粒度預(yù)測[J].鈦工業(yè)進(jìn)展,2019,36(3).

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歷史
  • 收稿日期:2019-02-24
  • 最后修改日期:2019-03-15
  • 錄用日期:2019-03-18
  • 在線發(fā)布日期: 2020-10-22
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