Accession Number:

AD0261791

Title:

METALLOCHEMICAL PROPERTIES OF NIOBIUM

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-06-26

Pagination or Media Count:

1.0

Abstract:

The metallic proper ies of Nb are discussed, and the elements of the periodic system are classified according to the types of their inter ction with Nb. The basic c rac eristics of the metallochemical properties of the elements considered were the electron structure of the atom, the atomic radii, the electrical negativity, the types of crystalline structure, and the fusion temperatures. Nb, a metal of the transition group, has an incomplete outer d-electron shell. The atomic radius of Nb is 1.45 Angstroms. With respect to electrical negativity Nb occupies a middle position. About 35 metals with relation to Nb are electrically positive, and about 37 are electrically negative. Nb has a cubic-centered lattice and a elting point of 2,415 C. The degree of affinity and difference of these metalloc e ical properties of Nb which result from the position of Nb with respect to the elements in the periodic system determines the possible types of interaction. On the basis of a generalization of the published material on the c emical reaction of Nb with the elements of the periodic system, a classification of these elements was made from the point of view of their interaction with Nb. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE