Method of producing superconductor
AssigneeHitachi, Ltd.
InventorsMotomune Kodama, Hideki Tanaka, Takaaki Suzuki, Junichi Shimoyama
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Abstract
The following two problems arise when carbon is added to a starting material powder in the process of production of an MgB2 superconductor: (1) an impurity phase increases; and (2) the degree of substitution of carbon at boron sites is spatially non-uniform. This superconductor production method comprises: a mixing step of mixing a starting material powder and an additive; and a heat treatment step of heat-treating the mixture prepared in the mixing step. The starting material powder is MgB2 powder or a mixed powder of magnesium and boron, and the additive is an Mg—B—C compound containing three elements of magnesium, boron and carbon.
Claims6
A method of producing a superconductor, the method comprising:
- a mixing step in which a raw material powder and an additive are mixed to produce a mixture;
- and
- a heat treatment step in which the mixture is subjected to a heat treatment;
- the raw material powder being an MgB2 powder or a mixed powder of magnesium and boron,
- the additive being an Mg—B—C compound containing three elements of magnesium, boron, and carbon.
Dependencies are inferred from the claim text.