检索结果-南通市图书馆

Particle size dependent sinterability and magnetic properties of recycled HDDR Nd-Fe-B powders consolidated with spark plasma sintering

引用

Journal of Rare Earths 2020年第1期38卷 90-99页

作者： Awais Ikram Farhan Mehmood richard stuart sheridan Muhammad Awais Allan Walton Anas Eldosouky Saso Sturm Spomenka Kobe Kristina Zuzek Rozman Department for Nanostructured Materials Jozef Stefan InstituteJamova 39SI-1000 LjubljanaSlovenia Jozef Stefan International Postgraduate School Jamova 39SI-1000 LjubljanaSlovenia School of Metallurgy and Materials University of BirminghamEdgbastonBirminghamB152TTUnited Kingdom Magneti Ljubljana d.d.Stegne 37SI-1000 LjubljanaSlovenia

The dependence of the magnetic properties on the particle size of recycled HDDR Nd-Fe-B powders was investigated,with the aim to assess the reprocessing potential of the end-of-life scrap magnets via spark plasma sintering(SPS).The as received recycled HDDR powder has coercivity(Hci)=830 kA/m and particles in the range from 30 to 700 μm(average 220 μm).After burr milling,the average particle size is reduced to 120 μm and subsequently the Hci of fine(milled) powder was 595 kA/*** plasma sintering was exploited to consolidate the nanograined HDDR powders and limit the abnormal grain *** optimal SPS-ing of coarse HDDR powder at 750℃for 1 min produces fully dense magnets with Hci=950±100 kA/m which further increases to 1200 kA/m via thermal treatment at 750℃for 15 *** burr milled fine HDDR powder under similar SPS conditions and after thermal treatment results in Hci=940 kA/*** fine powder is further sieved down from 630 to less than 50 μm mesh size,to evaluate the possible reduction in Hci in relation to the particle *** gain in oxygen content doubles for 200 μm).The XRD analysis for fractionated powder indicates an increase in Nd2O3 phase peaks in the finer(200 μm) to 460 kA/m in the fine sized particles(200 μm) is higher than 930 kA/m and it falls abruptly to just 70 kA/m for the fine sized particles(1000 kA/m only up to 100 μm sized fractions with>90% sintered *** full densification(>99%) is observed only in the coarse *** loss of coercivity and lack of sinterability in the fine sized particles(<100 μm) are attributed to a very high oxygen *** implies that durin

关键词： Reprocessing end-of life scrap Rare earth permanent magnets HDDR Nd2Fe14B Recycling Spark plasma sintering

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：