r-ray shielding properties of Cu-Zr-Al-Sm bulk metallic glasses

ZHONG Peng; LIU Chaozhuo; WANG Diansheng; SHI Zhiqiang; WANG Yanfang

doi:10.11889/j.0253-3219.2015.hjs.38.010205

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r-ray shielding properties of Cu-Zr-Al-Sm bulk metallic glasses

更新时间：2021-03-03

- r-ray shielding properties of Cu-Zr-Al-Sm bulk metallic glasses
- NUCLEAR TECHNIQUES Vol. 38, Issue 1, Article number: 010205(2015)
- 作者机构：
  
  1. 中国石油大学华东
  2. 理学院物理与光电工程系,青岛,266580
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2015.hjs.38.010205
  CLC：
- Published：07 January 2015
- 稿件说明：
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ZHONG Peng, LIU Chaozhuo, WANG Diansheng, et al. r-ray shielding properties of Cu-Zr-Al-Sm bulk metallic glasses[J]. Nuclear techniques, 2015, 38(1): 010205
DOI：

ZHONG Peng, LIU Chaozhuo, WANG Diansheng, et al. r-ray shielding properties of Cu-Zr-Al-Sm bulk metallic glasses[J]. Nuclear techniques, 2015, 38(1): 010205 DOI： 10.11889/j.0253-3219.2015.hjs.38.010205.

摘要

采用铜模吸铸法制备了(Cu50Zr45Al5)100?xSmx(x?0

4)板状合金试样。用差热扫描量热分析(Differential scanning calorimetry

DSC)、差热分析(Differential thermal analysis

DTA)和X射线衍射分析(X-ray diffraction

XRD)研究了Sm微合金化对Cu50Zr45Al5非晶合金结构与热稳定性的影响。采用NaI(T1)单晶?闪烁能谱仪测定了(Cu50Zr45Al5)99Sm1非晶合金对?射线的线性吸收系数。结果表明，当Sm含量低于3%(at%)时制备的板状合金为完全的非晶结构，超过3%会有Cu10Zr7和ZrCu等金属间化合物析出。Sm的微量添加增加了合金的热稳定性。制备的(Cu50Zr45Al5)99Sm1非晶合金对137Cs和60Co两种?射线的线性吸收系数分别为0.49cm?1和0.69cm?1。其屏蔽性能介于Pb和Al之间，具有潜在的应用价值。

Abstract

Background: Amorphous alloy has special application prospects in nuclear reactors and electromagnetic fields because of its excellent shielding properties. Purpose: This paper attempts to study the effects of minor addition Sm on the microstructure

glass-forming ability and thermal stability of the Cu-based Cu50Zr45Al5 bulk metallic glass (BMG) and the ?-ray shielding properties of the Cu-Zr-Al-Sm amorphous alloys. Methods: (Cu50Zr45Al5)100?xSmx (x?0

3 and 4) alloys plates are prepared by copper mold suction casting. The microstructure

thermal stability and the ?-ray shielding properties of the prepared samples are carried out by X-ray diffraction (XRD)

differential scanning calorimeters (DSC)

differential thermal analysis (DTA) and NaI(T1) scintillation gamma spectrometer. Results: The experimental results show that the Cu10Zr7 and ZrCu phases are precipitated when Sm addition exceeds 3%(at%)

otherwise the alloys are fully amorphous state. Minor addition Sm improved the thermal stability of the base alloy. The linear absorption coefficient of (Cu50Zr45Al5)99Sm1 amorphous alloys against 137Cs and 60Co ?-ray are 0.49cm?1 and 0.69cm?1

respectively. Conclusion: The shielding property of (Cu50Zr45Al5)99Sm1 BMG is between Pb and Al

and has potential application value. Abstract

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