Empirical Electron Theory Of Solids Research Articles

The effect of chromium on the valence electron structure of Fe 3Al intermetallic compounds (ternary)

Based on the empirical electron theory of solids and molecules, analysis of valence electron structures is applied to the Fe 3Al intermetallic compounds. The bonding complex model of the DO 3 cell is set up. Some preliminary attempts at revealing the relationship between alloy composition-structure-properties and the Fe 3Al alloy phase valence electron structure are presented.

Analysis of valence electron structures (VES) of intermetallic Fe 3Al compounds

Based on the empirical electron theory of solids and molecules, analysis of valence electron structures is made on Fe 3Al intermetallic compounds. The bonding complex model of the DO 3 cell is set up. Some preliminary attempts to discover the relationship between alloy composition, structure and properties and the Fe 3Al alloy phase valence electron structure are presented.

THE VALENCE ELECTRON STRUCTURE OF AUSTENITE IN LOW ALLOY ULTRAHIGH-STRENGTH STEELS AND ITS INFLUENCES ON KINETICS OF PHASE TRANSFORMATION

Based on S. H. Yu's empirical electron theory of solids and molecules, the valence electron structure of austenite in low alloy ultrahigh-strength steels, 30CrMnSiNi 2 A and 40 CrMnSiMoVA is established. The behavior of various main-added elements in the kinetics of phase transformation is discussed on the basis of C-Me segregation caused by the valence electron structure, The influence of alloying elements on the structure and morphology of transformed products is discussed from the viewpoint of interaction between the driving force of phase transformation and segregating force. Then on the basis of the valence electron structure of the alloy, the composition design of ultrahlgh-strength steels is discussed.

ELECTRON THEORY OF THE SUPERCONDUCTIVITY AND CRITICAL TRANSITION POINT Tc OF Ba2YCu309−d(d=2) BY THE APPLICATION OF THE EMPIRICAL ELECTRON THEORY OF SOLIDS AND MOLECULES

Application of “the empirical electron theory of solids and molecules” to the analysis of crystal structure obtained by Siegrist and his colleagues of Ba2YCu3O9−d(d≈2) directly yields the covalent bond electron structure of the crystal. The interpretation of the half oxygen vacancy in Cu-O4-O5 layers gives the necessity of the existence of empty thoroughfares for the superconductivity at low temperature crystal. Thermal agitation together with the fluctuation of the fractional covalent bonds render Ba atoms to rotate and to throw 04, 05 atoms to the thoroughfares to destroy the superconductivity. The calculated Tc agrees with the experimental value rather satisfactorily. The twinning observed by R. Beyers and his colleagues at IBM research centers further gives evidence for the thoroughfares existence.