skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP)

Abstract

A process of preparing superconducting magnesium diboride powder by heating an admixture of solid magnesium and amorphous boron powder or pellet under an inert atmosphere in a Mg:B ratio of greater than about 0.6:1 at temperatures and for time sufficient to form said superconducting magnesium diboride. The process can further include exposure to residual oxygen at high synthesis temperatures followed by slow cooling. In the cooling process oxygen atoms dissolved into MgB.sub.2 segregated to form nanometer-sized coherent Mg(B,O) precipitates in the MgB.sub.2 matrix, which can act as flux pinning centers.

Inventors:
 [1];  [1];  [1];  [1];  [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
875010
Patent Number(s):
6511943
Assignee:
The Regents of the University of California (Los Alamos, NM)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
synthesis; magnesium; diboride; vapor; infiltration; process; mvip; preparing; superconducting; powder; heating; admixture; solid; amorphous; boron; pellet; inert; atmosphere; mgb; ratio; 061; temperatures; time; sufficient; form; exposure; residual; oxygen; followed; slow; cooling; atoms; dissolved; mgbsub2; segregated; nanometer-sized; coherent; mgbo; precipitates; matrix; flux; pinning; centers; inert atmosphere; boron powder; amorphous boron; infiltration process; /505/252/420/423/

Citation Formats

Serquis, Adriana C, Zhu, Yuntian T, Mueller, Frederick M, Peterson, Dean E, and Liao, Xiao Zhou. Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP). United States: N. p., 2003. Web.
Serquis, Adriana C, Zhu, Yuntian T, Mueller, Frederick M, Peterson, Dean E, & Liao, Xiao Zhou. Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP). United States.
Serquis, Adriana C, Zhu, Yuntian T, Mueller, Frederick M, Peterson, Dean E, and Liao, Xiao Zhou. Wed . "Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP)". United States. https://www.osti.gov/servlets/purl/875010.
@article{osti_875010,
title = {Synthesis of magnesium diboride by magnesium vapor infiltration process (MVIP)},
author = {Serquis, Adriana C and Zhu, Yuntian T and Mueller, Frederick M and Peterson, Dean E and Liao, Xiao Zhou},
abstractNote = {A process of preparing superconducting magnesium diboride powder by heating an admixture of solid magnesium and amorphous boron powder or pellet under an inert atmosphere in a Mg:B ratio of greater than about 0.6:1 at temperatures and for time sufficient to form said superconducting magnesium diboride. The process can further include exposure to residual oxygen at high synthesis temperatures followed by slow cooling. In the cooling process oxygen atoms dissolved into MgB.sub.2 segregated to form nanometer-sized coherent Mg(B,O) precipitates in the MgB.sub.2 matrix, which can act as flux pinning centers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

Superconductivity in Dense MgB 2 Wires
journal, March 2001


Improved superconducting properties of MgB2
journal, October 2001


Boron Isotope Effect in Superconducting MgB 2
journal, February 2001


Synthesis and characterization of MgB2 superconductor
journal, November 2001


High critical current density and enhanced irreversibility field in superconducting MgB2 thin films
journal, May 2001

  • Eom, C. B.; Lee, M. K.; Choi, J. H.
  • Nature, Vol. 411, Issue 6837
  • DOI: 10.1038/35079018

Effect of lattice strain and defects on the superconductivity of MgB2
journal, December 2001

  • Serquis, A.; Zhu, Y. T.; Peterson, E. J.
  • Applied Physics Letters, Vol. 79, Issue 26
  • DOI: 10.1063/1.1428109

Superconductivity at 39 K in magnesium diboride
journal, March 2001

  • Nagamatsu, Jun; Nakagawa, Norimasa; Muranaka, Takahiro
  • Nature, Vol. 410, Issue 6824
  • DOI: 10.1038/35065039

Superconducting magnesium diboride films with Tc≈24 K grown by pulsed laser deposition with in situ anneal
journal, May 2001


Synthesis and processing of MgB2 powders and wires
journal, May 2001