弥散ZrO颗粒对Nb-Ti合金微观结构演变及超导性能的影响

Effect of Dispersed ZrO Particles on Microstructure Evolution and Superconducting Properties of Nb-Ti Alloy.

作者信息

Idczak Rafał, Konieczny Robert, Nowak Wojciech, Bartz Wojciech, Babij Michał

机构信息

Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland.

Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422 Wrocław, Poland.

出版信息

Materials (Basel). 2024 Dec 4;17(23):5946. doi: 10.3390/ma17235946.

DOI:10.3390/ma17235946

PMID:39685382

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11643743/

Abstract

The influence of dispersed ZrO particles on the microstructure evolution and the superconducting properties of a Nb-Ti alloy was investigated. The studied materials were prepared by different methods including mechanical alloying (MA) and arc-melting. The obtained samples were studied by X-ray diffraction (XRD) and vibrating-sample magnetometer (VSM). It was found that ZrO particles can be successively introduced into an Fe-Nb matrix by MA. However, among all prepared samples with a nominal composition of Nb-47wt%Ti-5 wt% ZrO, only the powders, which were prepared by MA of Nb-47wt%Ti and ZrO powders, exhibit superconductivity with critical parameters comparable to those observed in pristine Nb-47wt%Ti alloy. In particular, the determined upper critical field at 0 K μ0Hc2(0) is close to 15.6(1) T. This value is slightly higher than 15.3(3) T obtained for Nb-47wt%Ti and it can be ascribed to the presence of introduced ZrO particles in the Nb-Ti matrix.

摘要

研究了弥散分布的ZrO颗粒对Nb-Ti合金微观结构演变和超导性能的影响。所研究的材料通过包括机械合金化（MA）和电弧熔炼在内的不同方法制备。通过X射线衍射（XRD）和振动样品磁强计（VSM）对所得样品进行了研究。发现通过机械合金化可将ZrO颗粒相继引入Fe-Nb基体中。然而，在所有标称成分为Nb-47wt%Ti-5 wt%ZrO的制备样品中，只有通过Nb-47wt%Ti和ZrO粉末机械合金化制备的粉末表现出超导性，其临界参数与原始Nb-47wt%Ti合金中观察到的相当。特别是，在0 K时确定的上临界场μ0Hc2(0)接近15.6(1) T。该值略高于Nb-47wt%Ti合金的15.3(3) T，这可归因于Nb-Ti基体中引入的ZrO颗粒的存在。