搜索

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

CEMS和慢正电子束研究ZrO2(Y)中Fe的热动力学行为

俞方华 张桂林 於仕俊 翁惠民 张恒华

引用本文:
Citation:

CEMS和慢正电子束研究ZrO2(Y)中Fe的热动力学行为

俞方华, 张桂林, 於仕俊, 翁惠民, 张恒华

THERMODYNAMICAL BEHAVIOR OF 57Fe IMPLANTED IN ZrO2(Y) BY CEMS AND SLOW POSITRON BEAM

YU FANG-HUA, ZHANG GUI LIN, YU SHI JUN, WENG HUI-MIN, ZHANG HANG-HUA
PDF
导出引用
  • 用内转换电子穆斯堡尔谱(CEMS)和慢正电子束研究了含3%Y2O3的ZrO2中57Fe离子(100keV,3×1016at./cm2)注入态及其在氢气氛中退火的热力学行为.注入态以Fe3+,Fe2+和Fe0存在,它们分别是Fe3+-V(空位)复合体、二聚体和超顺磁颗粒.经400,500℃退火后,Fe3+-V分解,分别出现了α-Fe的前期相和α-Fe纳米颗粒.含Fe的ZrO2(Y)混合导电的出现可能是和Fe的不同价态及其相对含量有关
    By using conversion electron M?ssbauer spectroscopy (CEMS) and slow positron beam Doppler broading spectrum,the behaviour of the 57Fe implanted (100keV,3×1016 at./cm2) ZYx contained Y2O3 has been studied.The states of Fe0,Fe2+ and Fe3+ ions were obtained from CEMS for as implanted samples.After annealing at 500℃,metallic iron particles α-Fe, were formed at expense of other components. From the S-E curve of the 57Fe as implanted sample,it was found that a large amount of cationic vacancies were distributed in a region of 0—50nm in ZY3.These vacancies disappeared largely after annealing at 500℃.Therefore the parameter S provided an evidence to identify the iron sites in the implanted sample.The ZY3 appeared mingle conducting property at 300℃.It probably correlates with different iron charge states,especially with that of Fe0.
计量
  • 文章访问数:  6838
  • PDF下载量:  575
  • 被引次数: 0
出版历程
  • 收稿日期:  1995-08-09
  • 修回日期:  1995-10-27
  • 刊出日期:  1997-01-20

/

返回文章
返回