Refractory Transition Metal Compounds (eBook)

Front Cover 1
Refractory Transition Metal Compounds: High Temperature Cermets 4
Copyright Page 5
Table of Contents 6
Introduction 8
Chapter 1. Continuous-Discrete Character of Variation of the Type of Bonding in Refractory Compounds of Transition Metals and Principles of Classification of Refractory Compounds 10
REFERENCES 20
Chapter 2. Calculation of the Energy of Crystal Lattices of Inorganic Compounds 22
CONCLUSIONS 29
REFERENCES 29
Chapter 3. X-Ray Spectral Investigation of Chemical Bonding Forces in Hydrides of Refractory Metals, Using Titanium and Vanadium Compounds as Examples 30
CONCLUSIONS 43
REFERENCES 45
Chapter 4. Comparison of X-Ray K Absorption Spectra in Compounds of Chromium With Elements of Subgroup IV (C, Si, Ge) 46
REFERENCES 55
Chapter 5. Niobium L-Series Spectra in Different Compounds 57
CONCLUSIONS 61
REFERENCES 61
Chapter 6. Effect of Microimpurities on the L-Series Emission in X-Ray Spectrum of Germanium 62
APPARATUS 66
EXPERIMENTAL RESULTS 67
CONCLUSIONS 69
REFERENCES 70
Chapter 7. X-Ray Spectra and Interatomic Bond in Solid Metallic Compounds 71
CARBIDES AND NITRIDES 75
BORIDES 96
SILICIDES 102
REFERENCES 112
Chapter 8. Behavior of Components of Metal Solid Solutions in a Field of Electrical Forces 116
Chapter 9. Theory of Electrical Resistance of Ordered Alloys of Transition Metals with Nontransition Metals 130
REFERENCES 133
Chapter 10. Laws of Formation of Semiconducting Phases in Systems with Transition Metals 134
CONCLUSIONS 145
REFERENCES 145
Chapter 11. Preparation of Lanthanum Boride by Means of Reduction of Lanthanum Oxide by Boron Carbide 146
PREPARATION OF LANTHANUM HEXABORIDE 146
INVESTIGATION OF THE POSSIBILITY OF PRODUCING LANTHANUM BORIDE WITH A HIGHER BORON CONTENT THAN LaB 150
REFERENCES 153
Chapter 12. Electrical Properties of Hexaborides of Several Rare Earth Metals 155
REFERENCES 164
Chapter 13. Thermionic Emission Properties of Scandium and Gadolinium Borides 165
REFERENCES 170
Chapter 14. Electrical Properties of Molybdenum Silicides 
171 
CONCLUSIONS 179
REFERENCES 179
Chapter 15. Electrical Resistance of Refractory Compounds at High Temperatures 181
REFERENCES 185
Chapter 16. X-Ray Structure Analysis of Leboite 187
SAMPLES AND TECHNIQUE OF INVESTIGATION 188
CONCENTRATION LIMITS OF STABILITY OF a-LEBOITE 190
TYPES OF SOLID SOLUTIONS OF SILICON IN a-LEBOITE 192
COEFFICIENTS OF THERMAL EXPANSION ALONG THE AXES OF THE a-LEBOITE LATTICE 193
MORE PRECISE DETERMINATION OF THE STRUCTURAL PARAMETER z OF THE a-LEBOITE LATTICE 193
PROPOSED STRUCTURE OF a-LEBOITE 195
CONCLUSIONS 198
REFERENCES 198
Chapter 17. Electrical Conductivity of Iron-Silicon Alloys at High Temperatures 200
CONCLUSIONS 209
REFERENCES 209
Chapter 18. Electrical Properties of Iron and Silicon Alloys Containing Leboite 210
CONCLUSIONS 220
Chapter 19. Intermetallie Compounds with the ß-Uranium Structure (Sigma Phases) 222
REFERENCES 225
Subject Index 226