最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級(jí)檢索
Spheroidization of Nd-Fe-B Powders by RF Induction Plasma Processing
DOI:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:


Spheroidization of Nd-Fe-B Powders by RF Induction Plasma Processing
Author:
Affiliation:

Fund Project:

National Natural Science Foundation of China (51274039); State Key Laboratory for Advanced Metals and Materials (2010Z-09); Research Fund for 2012 Doctoral Program of Higher Education (20120006110007)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問(wèn)統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    以不規(guī)則形的釹鐵硼粉為原料，使用射頻等離子體球化處理工藝，制備球形釹鐵硼粉。研究了原料的加料速率和粉末粒度對(duì)粉末球化率的影響。通過(guò)掃描電子顯微鏡觀察對(duì)比了等離子球化處理前后粉末及截面形貌，采用X射線衍射方法測(cè)試分析了球化過(guò)程中氧化物的生成。檢測(cè)了球化前后粉末的松裝密度及其粒度分布。結(jié)果表明：不規(guī)則形狀的釹鐵硼粉經(jīng)等離子球化處理后其球化率可達(dá)到100%，松裝密度由2.778 g/cm3提高到3.785 g/cm3，粉末流動(dòng)性由43.3 s/50 g 提高到27.5 s/50 g。該粉末適用于凝膠注膜成型及注射成型

    Abstract:

    The present study described the synthesis of spheroidized Nd-Fe-B powders using a radio frequency (RF) inductively coupled plasma (ICP) torch with irregular feedstock materials. The effect of the power feed rate and the particle size of the feedstock material on spheroidization was analyzed. Scanning electron microscopy was used to examine the morphologies and the cross sections of plasma-processed powders. X-ray diffraction was used to analyze the oxides formed in the spheroidization processing. The loose densities and the particle size distributions of both the raw materials and the spheroidized powders were characterized. The results show that almost 100% of spheroidization percentage could be achieved. The loose density and powder flowability are enhanced greatly after plasma-treating. The loose density rises from 2.778 g/cm3 to 3.785 g/cm3. The powder flowability increases from 43.3 s/50 g to 27.5 s/50 g. Due to the good flowabitity and high loose density of the spherical powders, plasma-treated Nd-Fe-B powders have been used as the feedstock for gel-casting and injection molding

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王玉明,郝俊杰,盛艷偉. Spheroidization of Nd-Fe-B Powders by RF Induction Plasma Processing[J].稀有金屬材料與工程,2013,42(9):1810~1813.[Wang Yuming, Hao Junjie, Sheng Yanwei. Spheroidization of Nd-Fe-B Powders by RF Induction Plasma Processing[J]. Rare Metal Materials and Engineering,2013,42(9):1810~1813.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2012-09-20
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: