以Sc2O3为原料,液态铝锶合金为还原剂及合金基体,在nNaF·AlF3-NaCl-KCl熔盐体系中通过铝锶热还原制备了Al-Sc中间合金.主要考察了ScF3添加量、温度和时间对Sc含量及收率的影响.结果表明,熔盐中添加1％(质量分数,下同)的ScF3,反应温度900℃,反应时间45 min,制得了Sc含量在2％以上的Al-Sc中间合金,Sc的直收率可达74.25％.SEM,EDS和XRD分析结果表明,中间合金由黑白两相组成,白色间断相为不规则形状的Al3Sc第二相粒子,黑色连续相为铝基.
参考文献
| [1] | Asta M.;Ozolins V. .Structural, vibrational, and thermodynamic properties of Al-Sc alloys and intermetallic compounds - art. no. 094104[J].Physical Review.B.Condensed Matter,2001(9):4104-0. |
| [2] | 陈立佳,孙雪盼,马春艳,车欣.含钪、铒的Al-0.8%Mg-0.6%Si合金的低周疲劳行为[J].中国稀土学报,2011(01):29-35. |
| [3] | 李力,姜锋,李汉广.新世纪钪的应用开发和科技发展前景[J].稀有金属与硬质合金,2002(03):38-41. |
| [4] | 尹志民;李汉广;姜锋.钪和含钪合金[M].长沙:中南大学出版社,2001:128. |
| [5] | HE Zhenbo,YIN Zhimin,LIN Sen,DENG Ying,SHANG Baochuan,ZHOU Xiang.Preparation, microstructure and properties of Al-Zn-Mg-Sc alloy tubes[J].稀土学报（英文版）,2010(04):641-646. |
| [6] | Davydov V G;Rostova T D;Zakharov V .Scientific principles of making an alloying addition of Scandium to Aluminum alloys[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2000,280(01):30. |
| [7] | Masaru N;Akira F;Yasuhiro M .Preparation of Al3 Sc Al-0.23mass％ Sc alloy[J].Mat Tran JIM,1997,38(10):852. |
| [8] | 潘英才,乔振,赵中魁.Si、Mg含量变化对Al-Mg-Si-Li合金组织和性能的影响[J].青岛科技大学学报（自然科学版）,2011(06):617-621. |
| [9] | Tian Y W;Sun B L;Zhai Y C .Preparation of Al-Sc alloy in chloride system with molten salte electrolysis[J].Transactions Nonferrous Metals Society of China,2005,8(04):626. |
| [10] | 孙本良,翟玉春,田彦文.氟盐体系中电解制取铝钪合金的研究[J].稀有金属,1998(03):191-194. |
| [11] | Leevell A W .Aluminium-Scandium Alloy[P].US Patent,US 3619181,1971. |
| [12] | Jiang F;Bai L;Yin Z M .Research on preparation of Sc-Bearing aluminum master alloy using chlorinating magnesium thermic reduction method[J].Journal of Rare Earths,2002,20(05):207. |
| [13] | 冰晶石熔体中Al热还原法制备Al-Sc合金[J].中国有色金属学报,1999(01):171. |
| [14] | 陈晓鸣,张宗华,张桂芳.铝镁热还原无水氯化钪熔盐制备铝镁钪中间合金工艺试验研究[J].稀土,2009(03):62-65. |
| [15] | 梁英教;车荫昌.无机物热力学数据手册[M].沈阳:东北大学出版社,1994 |
| [16] | 氧化钪在nNaF·AlF3-ScF3熔盐体系中的溶解[J].中国有色金属学报,1999(03):624. |
| [17] | Richard E H;Dean A K .Vapor pressure data for the solid and liquid elements[J].RCA Review,1969,30:285. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%