Improvement of critical current density in the Bi-Pb-Sr-Ca-Cu-O system through hot isostatic pressing

Dou, S.X.School of Materials Science and Engineering, University of New South Wales (författare)

Godkänd; 1990; 20091112 (andbra)
The effects of hot isostatic pressing (HIPing) on densification and the superconducting properties of the Bi-Pb-Sr-Ca-O system were investigated. A relative density up to 95% and a critical current density greater than 1100 A/cm2 at 77 K were achieved through HIPing at 650°C for 2 h under 200 MPa argon. Under these conditions, the product gave a value of Jc four times that without HIPing. To was unaffected by HIPing for samples encapsulated with a combination of glass and silver tubes. However, To was suppressed from 103 K to 86 K for samples encapsulated with stainless steel and silver tubes while Jc increased from 260 A/ cm2 to 1086 A/cm2 during HIPing, indicating that the weak links were significantly improved. A new minor phase, having a composition of Bi/Pb/Sr/Ca/Cu=0.58/2.8/3.0/2.1/1.1, was observed in HIPed samples but its effect on Jc is not clear

Liu, H.K.School of Materials Science and Engineering, University of New South Wales (författare)
Apperley, M.A.School of Materials Science and Engineering, University of New South Wales (författare)
Song, K.H.School of Materials Science and Engineering, University of New South Wales (författare)
Sorrell, C.C.School of Materials Science and Engineering, University of New South Wales (författare)
Easterling, Kenneth E.Luleå tekniska universitet(Swepub:ltu)bib-keneas (författare)
Niska, JohnLuleå tekniska universitet (författare)
Guo, S.J.Luleå tekniska universitet (författare)
Luleå tekniska universitetSchool of Materials Science and Engineering, University of New South Wales (creator_code:org_t)

Av författaren/redakt...: Dou, S.X.; Liu, H.K.; Apperley, M.A.; Song, K.H.; Sorrell, C.C.; Easterling, Kenn ...; visa fler...; Niska, John; Guo, S.J.; visa färre...

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