Study on the annealing process of in-situ MgB2/Fe tapes by advanced spark plasma sintering (SPS) technique

✍ Scribed by HongLi Suo; Ying Wang; HongXia Ma; Lin Ma; Min Liu; Yue Zhao; MeiLing Zhou

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 209 KB
• Volume: 460-462
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2007.04.204

✦ Synopsis

In-situ MgB 2 /Fe tapes were fabricated by powder-in-tube (PIT) technology using Mg and B powders. The tapes were sintered by advanced spark plasma sintering (SPS) technique. The effects of the annealing parameters on the properties of the MgB 2 tapes were investigated by the analysis of XRD, SEM and the magnetic J c measurements. It was shown that at 10 K, 0 T, the J c value of the tape sintered using SPS machine at 800 °C for 15 min under 40 MPa was close to 10 6 A/cm 2 , which was higher than that of the same tapes annealed by conventional method. It was supposed that the density and the homogeneity of the MgB 2 core were strongly improved using fast SPS sintering process. Further enhancement of J c in the tapes is expected for the understanding of the SPS sintering mechanism.