Accession Number:

AD0618005

Title:

A TERNARY ALLOY WITH PBCL2-TYPE STRUCTURE: TINISI(E),

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Report Date:

1964-07-29

Pagination or Media Count:

6.0

Abstract:

Beck and coworkers have found E phases in several ternary systems of transition elements with either silicon or germanium at the composition 111. The crystal structure of TiNiSiE has been determined and refined by least squares with limited three-dimensional single-crystal data to a final R value of 0.086 excluding 002 due to apparent extinction, and all nonobserved reflexions. The lattice parameters for the primitive orthorhombic cell are a sub 0 6.14840.0012, b sub 0 7.01730.0014, c sub 0 3.66980.0007 A. The E phase is isotypic with PbCl2C23, space group Pnam. All near-neighbor distances are within 0.06 A of the following average values Ti-Ti 3.18, Ti-Ni 2.83, Ti-Si 2.61, Ni-Ni 2.67, Ni-Si 2.33 A. The numbers of nearneighbors are compared with those in Co2Si, theta Ni2Si and U3Si2. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE