Download Production of Advanced Materials by Methods of by Giorgi F Tavadze, Alexander Shteinberg PDF

By Giorgi F Tavadze, Alexander Shteinberg

This translation from the unique Russian ebook outlines the construction of numerous fabrics through equipment of self-propagating high-temperature synthesis (SHS). the kinds of fabrics mentioned contain: not easy, refractory, corrosion and wear-resistant fabrics, in addition to different complicated and area of expertise fabrics. The authors tackle the difficulty of optimum parameters for SHS reactions taking place in the course of techniques concerning a initial metallothermic relief level, and so they calculate those utilizing thermodynamic methods. with the intention to ensure the effectiveness of this strategy, the authors describe experiments targeting the synthesis of elemental crystalline boron, boron carbides and nitrides. different elements of this short comprise theoretical and experimental effects on single-stage construction of not easy alloys at the foundation of titanium and zirconium borides, in addition to macro kinetics of degassing and compaction of SHS-products. This short is acceptable for lecturers, in addition to these operating in business production businesses generating tough alloys and composites for making metal-working equipment or drilling equipment.

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Production of Advanced Materials by Methods of Self-Propagating High-Temperature Synthesis

This translation from the unique Russian booklet outlines the creation of numerous fabrics by means of equipment of self-propagating high-temperature synthesis (SHS). the kinds of fabrics mentioned comprise: challenging, refractory, corrosion and wear-resistant fabrics, in addition to different complex and forte fabrics.

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Institute of Chemical Physics, Chernogolovka 19. Mamyan SS, Merzhanov AG (1978) Thermodynamic analysis of possibility of synthesis of diborides of some metals from elements, oxides and halogenides in the combustion mode. Institute of Chemical Physics, Chernogolovka 20. Mamyan SS, Petrov YM, Stesik LN (1976) Thermodynamic analysis of conditions for formation of some refractory compounds. ) Processes of combustion in chemical technology and metallurgy, Chernogolovka 21. Mamyan SS, Merzhanov AG (1978) Thermodynamic analysis of possibility of metallothermic reduction of metal oxides in the combustion mode.

Tsagareishvili DSh, Gvelesiani GG (1965) Fast method for calculation of high-temperature heat capacity values for solid inorganic materials. Soobshcheniya Acad Sci GSSR 37:581– 585 40. Tavadze G, Nadiradze A, Ukleba K (2010) Thermodynamic probability of obtaining boron carbide and boron nitride from potassium tetrafluoroboron and boron oxide at selfpropagating high-temperature synthesis. Bull Georgian Nat Acad Sci 4:74–81 41. Mikhailichenko LI, Markov VK, Dolgov AS et al (1973) Gas-chromatography determination of oxygen and nitrogen in refractory materials.

20. An increase in the initial N2 pressure produces an increase in product nitridation (Fig. 20), which results in a decrease of the evaporation contribution to the process and an increase in combustion temperature and rate. 32 1 Synthesis of Elemental Boron and Its Refractory Compounds Fig. 20 Dependence of combustion characteristics for the KBF4–Mg–N2 system on initial N2 pressure Fig. 21 Dependence of combustion characteristics for the KBF4–Al–N2 system on initial N2 pressure For the KBF4–Mg–N2 system, the dependencies of combustion temperature and sample weight loss on the initial N2 pressure reach a plateau at PN2 [ 25 Á 105 Pa.

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