HEAT-RESISTANT MATERIAL BASED ON NIOBIUM, AND METHODS FOR ITS OBTAINING Russian patent published in 2012 - IPC C22C27/02 B32B15/01 

FIELD: metallurgy.

SUBSTANCE: heat-resistant material based on niobium and methods for its obtaining are proposed; the invention refers to metallurgy and can be used for production of parts of aerospace equipment operating at high temperatures. Heat-resistant material based on niobium is made in the form of alternating layers of solid solution of aluminium or silicon in niobium and layers of corresponding intermetallic compounds of niobium Nb₃Al or Nb₃Si, the thickness of which does not exceed 50 mcm. Method for obtaining heat-resistant material based on niobium involves assembly of a pack with alternation of niobium foil and aluminium foil and heat treatment of pack until layers of intermetallic compound Nb₃Al are obtained or assembly of pack of niobium foil with one-sided coating of Si-powder. Besides, heat treatment is performed under pressure of 5-15 MPa in vacuum of 10^-2-10^-4 mmHg till layers of intermetallic compound Nb₃Al and Nb₃Si respectively are formed.

EFFECT: increasing strength owing to creating additional boundary lines in material.

5 cl, 8 dwg, 4 ex