Zr-2.5Nb合金板材吸氢行为研究  

Study on Hydrogen Absorption of Zr-2.5Nb Alloy

作　　者：王华才[1] 钱进[1] 褚凤敏[1] 梁政强[1] 

机构地区：[1]中国原子能科学研究院反应堆工程研究设计所,北京102413

出　　处：《热加工工艺》2014年第18期85-87,90,共4页Hot Working Technology

基　　金：国防科技工业局核能开发科研项目(科工二司2009-1226号)

摘　　要：采用电解法对Zr-2.5Nb合金板材进行渗氢,研究不同时间渗氢后试样的吸氢特性;运用X射线衍射仪和金相显微镜对渗氢及热处理后试样的物相结构和显微组织及氢化物分布特征进行分析,并利用LECORH600红外吸收氢测量仪对试样吸氢量进行定量分析。结果表明,合金吸氢后试样表面形成一层氢化物膜,氢化物膜主相为ZrH1.66,氢化物膜厚随着渗氢时间的延长而逐渐增加;合金试样中氢化物呈片状并沿平行板材轧制方向分布,且氢化物随试样吸氢量的增加有聚集生长的趋势,试样的吸氢量随渗氢时间呈抛物线型变化。Electrolytic hydrogen charging techniques were used for hydrogen permeation on Zr-2.5Nb alloy samples.Hydrogen absorption with different charging time was investigated. The microstructure, micrographs evolution and hydride distribution of the alloy sample during hydrogen charging and heat treatment were characterized by X-ray diffraction（XRD） and metallographic microscope, respectively. Hydrogen contents of the specimen after hydrogen permeation were quantitatively analyzed by using LECO RH600 infrared gas analyzer. The results show that after hydrogen charging with the increase of the charging time, the hydride phase layer raises, the phase composition is mainly ZrH1.66. The shape of hydride in alloy samples is platelet, the distribution orientation parallels the rolling plane. It was observed that hydride platelet length increases with the increase in hydrogen content. The relationship between hydrogen absorption and charged time is a parabolic curve.

关 键 词：Zr-2.5Nb合金 电解渗氢 片状氢化物 抛物线 

分 类 号：TG146.414[一般工业技术—材料科学与工程]