DEFECTS IN FINE-GRAINED AND POROUS MATERIALS CHARACTERIZED BY POSITRON ANNIHILATION

机译：正电子NI没表征的细颗粒和多孔材料中的缺陷

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We investigate the annihilation parameters (lifetimes and intensities) for positrons becoming trapped at grain boundaries and at inner surfaces (pores), examining fine-grained nickel powder compacts (effective powder particle size 1 ― 10 μm with grains in or even below the micron size). Furthermore, we can monitor grain growth and sintering (volume shrinkage) during successive heat treatment of powder compacts. To reach this aim, we correlate the annihilation parameters with results of a Monte-Carlo simulation and analytical solutions of the positron diffusion. We find that it is possible to determine an effective average powder particle size as well as grain sizes by positron lifetime spectroscopy.

机译：我们研究了正电子被困在晶界和内表面（孔）时的the没参数（寿命和强度），检查了细颗粒的镍粉压块（有效粉末粒度为1〜10μm，晶粒为微米甚至小于微米））。此外，我们可以监测粉末压坯的连续热处理过程中的晶粒长大和烧结（体积收缩）。为了达到这个目的，我们将the没参数与蒙特卡洛模拟的结果和正电子扩散的解析解相关联。我们发现有可能通过正电子寿命光谱法确定有效的平均粉末粒径以及晶粒尺寸。

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来源
《The 3rd International Symposium on Material Chemistry in Nuclear Environment (Material Chemistry '02 MC'02) Mar 13-15, 2002 Tsukuba》|2002年|p.95-101|共7页
会议地点 Tsukuba(JP);Tsukuba(JP);Tsukuba(JP)
作者
T.E.M. Staab; R. Krause-Rehberg; B. Kieback;
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作者单位

University Bonn, ISKP, Nussallee 14-16, D-53115 Bonn, Germany;

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会议组织
原文格式 PDF
正文语种 eng
中图分类原子能技术;
关键词
positron annihilation parameters; fine-grained; porous; positron ther-malization and diffusion; grain-boundaries; pores;

机译：正电子ni没参数;细粒度;多孔;正电子热化扩散;晶界;孔;

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1. Positron Annihilation as a Method to Characterize Porous Materials [J] . David W. Gidley, Hua-Gen Peng, Richard S. Vallery Annual Review of Materials Research . 2006,第期

机译：正电子An灭作为表征多孔材料的方法
2. Positron Annihilation Spectroscopy to Characterize Irradiation Induced Vacancy Type Defects in Materials for Nuclear Fission and Fusion [J] . Barthe Marie-France EPJ Web of Conferences . 2016,第4期

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3. Defects in CuIn(Ga)Se_2 solar cell material characterized by positron annihilation: post-growth annealing effects [J] . F. Borner, J. Gebauer, S. Eichler, Physica, B. Condensed Matter . 1999,第0期

机译：以正电子an没为特征的CuIn（Ga）Se_2太阳能电池材料缺陷：生长后退火效应
4. Defects in fine-grained and porous materials characterized by positron annihilation [C] . T. E. M. Staab, R. Krause-Rehberg, B. Kieback International Symposium on Material Chemistry in Nuclear Environment . 2003

机译：细粒和多孔材料的缺陷，其特征在于正电子湮没
5. Three-dimensional positron annihilation momentum measurement technique applied to measure oxygen-atom defects in 6H silicon carbide. [D] . Williams, Christopher S. 2010

机译：三维正电子an没动量测量技术用于测量6H碳化硅中的氧原子缺陷。
6. Measurements of Defect Structures by Positron Annihilation Lifetime Spectroscopy of the Tellurite Glass 70TeO2-5XO-10P2O5-10ZnO-5PbF2 (X = Mg Bi2 Ti) Doped with Ions of the Rare Earth Element Er3+ [O] . K. Pach, J. Filipecki, E. Golis, 2017

机译：掺有稀土元素Er3 +的碲化物玻璃70TeO2-5XO-10P2O5-10ZnO-5PbF2（X = MgBi2Ti）的正电子ni没寿命光谱法测量缺陷结构
7. Characterisation of Ion Implantation-induced Defects in Certain Technologically Important Materials by Positron Annihilation [O] . P. M. G. Nambissan 2009

机译：用正电子湮没法表征某些技术上重要材料中离子注入引起的缺陷
8. Positron annihilation studies of vacancy related defects in ceramic and thin film Pb(Zr,Ti)O3 materials [R] . Keeble, D J, Krishnan, A, Umlor, M T, 1994

机译：正电子湮没研究陶瓷和薄膜pb（Zr，Ti）O3材料中的空位相关缺陷

DEFECTS IN FINE-GRAINED AND POROUS MATERIALS CHARACTERIZED BY POSITRON ANNIHILATION

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