Alloy Chemistry of Transition Elements

Abstract

Mi tk» inrraan M In* 0 ■■**• *rwr *• Me immmmcm MM •< «Ma Mkcrs-0m» u* UaUk^.C. IM» w •»»-*»r » *M>* O«i><»i< mi Mkrmr«r< bf aa ■ --J *"" Pr'Osraa k.!0.» AML-fT-721 Publication* File . ■-B. Cblrwik M. V. Mavltt CocTa^nca Proc-dlaga BUtor, on February 22, 1962 at a and Alloy Cbaalatry of Tirana It Ion or the Co-ittaa ot> Alloy Pb*a«« or fjm. to tba ail tor at AXMB CeuTarence *a« praaentad In l«ev York City •ywoalim entitled ''Electronic Structure naaenta" under the auaplcea la to bo eulmitted alloy csbcxbtry or trams mon elskbvts 1-*. H. XL Young 6. ' 7. 8. 9-10-12. 15. A ^O O r r i i M B M 1 ^* DrrRODuc-noK 1. in terw of comgtosi-2. association of structures and 5. the relative stability the past fit: yeurs on occurrence ALLOT CmnCBTRT OF TmWSITIOK EUMDITB bj M. V. Meritt The description and classification of al lay phases tlon and crystal structure. that were not evident earlier and they soae of the earlier uncertainties. new data permit generalbo be recognised concerning the •nd structi-j-e of In **. mediate pfrnrss also provide a cl-r'-ficstloo of phases that Present day studies are of an e^irlcal and perhaps the best Justiat the present tine la the het ttet during a verv considerable amount of crystal c beads try data allty phaser has bear MUai to the literature, iwiejs to be ek> nd trends ®'*:h •» analysis is in an lagwrfect state for the wispiest mti11 1c ■ bruc tures '«nd is almost entirely lacking for the intermediate occur In transition attal systesa. kind, heavily dependent upon experimental data, ficatlon for a critical review structural elements with the ctWLracter and distribution of the bonds between the atoss. An understanding of the factors which determine of the phasis. The realisation of these goals, particularly the last two, will ulti mately need a rigorous quantitative treatment, involvli^ for various strtacture* • detailed knowledge of the distribution of the ho«WHng electrons, spatially and energetically, and the establishment of exact relationships between the energies and configurations of the atoms and electrons and the thermodynamic properties. Alloy chemistry is the title given In the present discussion to the study of the Intermediate phase* in alloy systems, a study which has three closely .-elated goals: MMIMM sub-group". Th. Mrtlcularly ratios and Ftor this reason th. compounds at », families of Isostructural In their tlKuMlon at transition metals and th.tr alloy.. Bkmm-Jtothmry and Oolaa^1^ define th. transition metals aa those which "occupy places in th. Periodic Thbl. at the T1 .sects where groups or 8 electron., which acquire a provisional stability in th. atone of the i*ew yr-----. ex pend into groups of 18 .lactrons by the building up of an (nd)10 Th. lanthanoea are considered to interrupt ths oonal transition xwrcrrnv bartwra La and Bf in the third lone period, and the eLemmta from Ac rainrl are regarded as creaking into the nnrml transition process of the fourth which represent a rather wide variety of .tructure-type.. -5ar* •pectlvely). -typ* at A^B the Cr^O-typ* at A^B th...

Equiatomic compounds of the transition and lanthanide elements with Rh, Ir, Ni and Pt

“…Lattice parameters are given in Table 1. Earlier work by the present authors (Nevitt, 1963) gave slightly different values for ErRh and LuRh. New alloys were used in the present work.…”

The electronic structures of cesium chloride type intermetallic compounds I. Preliminary energy bands of β'AuZn and β'NiAl

“…Approximately 140 such intermetallics have been identified [21]. These alloys are characterized, first of all, by relatively narrow ranges of atomic composition, in comparison with solid-solution alloy phases.…”

Development of the high-temperature, solid-state, electromotive force technique to study the thermodynamics of Lewis-acid-base transition metal alloys

“…A class of intermetallic compounds which take particular advantage of this effect are the Laves phases (31). The factors which determine their occurrence have been briefly discussed by Brewer (10) and throughly reviewed by Nevitt (32 These trends are useful because if data for some alloys are known, limits to the stabilities of related others may be set.…”