Titlebook: Mechanical Properties of Silicon Based Compounds: Silicides; Joshua Pelleg Book 2019 Springer Nature Switzerland AG 2019 very large scale

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Testing-Deformation,e crystals and polycrystalline silicides. Further, the mechanical properties of thin films are an integral part of this chapter and their stress developed during formation on cooling (differential thermal shrinkage) and as a result of mismatch between substrate and silicide film are discussed. Known

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Somber

,Time Dependent Deformation—Creep in Silicides,sented. Disregarding instant elongation, creep is known to occur at three stages: transient creep, steady state creep and accelerated creep. Limited information on creep in silicides exist and therefore only MoSi., MoSi.-WSi. and TiSi. are considered. Grain size has an important effect on the creep

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Fatigue in Silicide Composites,i is a horizontal line. At the stress level defined by the horizontal line or below it a material endures a very large number of stress cycles without failure. However, in most other materials no definite endurance limit exists. The term “runout” refers to about 10. cycles representing the highest s

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Deformation in Nano Silicides,ructures. It is expected to obtain improved strength properties in nano structures. Because the dislocation motion—if present at all—is restricted theoretical strength is anticipated. Contrary to macrostructures increase in strength is accompanied by increase in elongation. The theoretical tensile s

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The Effect of B,in boundaries strengthen them. The outstanding feature of B is on inducing ductility in brittle material. Also the oxidation resistance is improved as exemplified for MoSi. and pest formation is eliminated. Hardness and fracture toughness are higher in B added silicides as illustrated for MoSi.. B a

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Alloying in Silicides, while composites are always heterogeneous. Metallic elements such as Nb, Al and Cr are additives to improve properties some of them by solid solution strengthening. The room temperature brittle MoSi. having exceptional oxidation resistance but low high temperature strength need to be improved by re

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