Composition ivi of Alloys
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Alloy (alloy) is a material ivi that has metallic properties and is composed ivi of several chemical elements, at least one element of A is a metal alloy can be something that is homogeneous or a mixture (mixture) of a few phases (phase). ivi Phase is part of a homogeneous material and is physically different. ivi For pure elements with the same phase state (solid, liquid or gas) that have properties of metals in the solid state allotropi has several phases. Different crystal ivi structures are different phases. When two or more elements are mixed then there are several possibilities that can happen: Compound (compound) intermetallic alloy or solid solution phase (solid solution) Mixture (mixture) of various phases
Compound (compound) or phase intermetallic alloy composition ivi is given (has the chemical formula) have a crystalline structure and properties (physical, chemical and mechanical) which is totally different from its constituent elements Has a melting point (the temperature ivi change in a particular phase) specific, as well as the pure metal There are 3 kinds of compound: intermetallic compound (compound Valency) Interstitial Electron compound and compound
Interstitial Compound usually formed between transition metals (such as Sc Scandium, ivi Titanium Ti, Ta Tantalum, Tungsten W, and Iron Fe) with hydrogen H, oxygen O, C carbon, boron and nitrogen N. B Has a certain composition and hardness Having Characteristically metallic point very high melting Example: TiC, TaC, CrN, TIH, Fe4N3, W2C and Fe3C
Electron Compound ivi can occur in metal alloys Copper, Gold, Silver, Iron and Nickel Cadmium with metal, magnesium, White Lead, Zinc, and Aluminum Some of these compounds have the same crystal structure of this compound occurs by following / honing in comparison to the number ivi of valence electrons For example ivi a certain number of atoms AgZn compound, consisting of one atom Ag (valence 1) and one Zn atom (valence 2). The number of valence electrons (1 +2 = 3): the number of atoms (2) = 3:2
Solid Solution Each solution consists of a solvent (solvent), are more numerous ivi and dissolved ivi (solute), a smaller number In solution, the "look" is solvent, while the solute will be "lost" total solute that can be dissolved in a solvent is a function In the solid solution temperature of solute atoms into the crystal solvent, thus causing the reinforcement
There are two types of solid solutions: Substitutional solid solution, in which solute atoms replace solvent atoms in the crystal solvent. Which is soluble in substitutional solute ivi elements with atomic jari2 not too much different from the atoms of the solvent jari2 interstitial solid solution, in which solute atoms interrupted by incoming insert solvent atoms in the crystal solvent. Dpat which is soluble in the interstitial solute atoms with jari2 very small (less than 1A, hydrogen, ivi boron, carbon, nitrogen and oxygen
Substitutional solid solubility solution In this solution can not be limited, depending on several factors Crystal factors, unlimited solubility can occur when both components have the same crystal system Relative size factor, unlimited solubility can occur when the difference in atomic jari2 <8%, if the difference The 8-15% solubility limits, if more than 15% will be very limited solubility Cemical affinity factor, when both components have a large chemical affinity, then they tend to form compounds. To be able to form a solid solution it must be small relative chemical affinity, valence factor, unlimited solubility can occur when the valence of the two components of the same, if not then it will be limited solubility, the component with the higher valence will dissolve much less
Atomic Intersitial solid solution solute into the crystal solvent by means of inserts, hence the solute atoms must be much smaller than the atomic solvent solubility is very limited, so do not mean much to gain. Hence also the usual solution of this type is not so important, but a solid solution of carbon ivi in iron
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1. Mandatory ivi add FB (Bso Mtc Hmmt Fti-Its) and follow Twitter Materials Techno Club (@ mtc_hmmt) 2.Kirim answer to number 089 625 189 702 nma_brp_jawaban_saran format for MTC 3.Dua the lucky winner will get a pulse of Rp 5,000, - per person.
Alloy (alloy) is a material ivi that has metallic properties and is composed ivi of several chemical elements, at least one element of A is a metal alloy can be something that is homogeneous or a mixture (mixture) of a few phases (phase). ivi Phase is part of a homogeneous material and is physically different. ivi For pure elements with the same phase state (solid, liquid or gas) that have properties of metals in the solid state allotropi has several phases. Different crystal ivi structures are different phases. When two or more elements are mixed then there are several possibilities that can happen: Compound (compound) intermetallic alloy or solid solution phase (solid solution) Mixture (mixture) of various phases
Compound (compound) or phase intermetallic alloy composition ivi is given (has the chemical formula) have a crystalline structure and properties (physical, chemical and mechanical) which is totally different from its constituent elements Has a melting point (the temperature ivi change in a particular phase) specific, as well as the pure metal There are 3 kinds of compound: intermetallic compound (compound Valency) Interstitial Electron compound and compound
Interstitial Compound usually formed between transition metals (such as Sc Scandium, ivi Titanium Ti, Ta Tantalum, Tungsten W, and Iron Fe) with hydrogen H, oxygen O, C carbon, boron and nitrogen N. B Has a certain composition and hardness Having Characteristically metallic point very high melting Example: TiC, TaC, CrN, TIH, Fe4N3, W2C and Fe3C
Electron Compound ivi can occur in metal alloys Copper, Gold, Silver, Iron and Nickel Cadmium with metal, magnesium, White Lead, Zinc, and Aluminum Some of these compounds have the same crystal structure of this compound occurs by following / honing in comparison to the number ivi of valence electrons For example ivi a certain number of atoms AgZn compound, consisting of one atom Ag (valence 1) and one Zn atom (valence 2). The number of valence electrons (1 +2 = 3): the number of atoms (2) = 3:2
Solid Solution Each solution consists of a solvent (solvent), are more numerous ivi and dissolved ivi (solute), a smaller number In solution, the "look" is solvent, while the solute will be "lost" total solute that can be dissolved in a solvent is a function In the solid solution temperature of solute atoms into the crystal solvent, thus causing the reinforcement
There are two types of solid solutions: Substitutional solid solution, in which solute atoms replace solvent atoms in the crystal solvent. Which is soluble in substitutional solute ivi elements with atomic jari2 not too much different from the atoms of the solvent jari2 interstitial solid solution, in which solute atoms interrupted by incoming insert solvent atoms in the crystal solvent. Dpat which is soluble in the interstitial solute atoms with jari2 very small (less than 1A, hydrogen, ivi boron, carbon, nitrogen and oxygen
Substitutional solid solubility solution In this solution can not be limited, depending on several factors Crystal factors, unlimited solubility can occur when both components have the same crystal system Relative size factor, unlimited solubility can occur when the difference in atomic jari2 <8%, if the difference The 8-15% solubility limits, if more than 15% will be very limited solubility Cemical affinity factor, when both components have a large chemical affinity, then they tend to form compounds. To be able to form a solid solution it must be small relative chemical affinity, valence factor, unlimited solubility can occur when the valence of the two components of the same, if not then it will be limited solubility, the component with the higher valence will dissolve much less
Atomic Intersitial solid solution solute into the crystal solvent by means of inserts, hence the solute atoms must be much smaller than the atomic solvent solubility is very limited, so do not mean much to gain. Hence also the usual solution of this type is not so important, but a solid solution of carbon ivi in iron
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