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Cheap Abrasive Grade Aluminum Oxide Producers Slovakia

When the surface boron content reaches 16.2wt%(glass beads manufacturers), the FeB phase begins to nucleate and grow, and a second type of boride will appear on the surface of Fe B FeB. The infiltrating element can form a solid solution or intermetallic compound with the base metal. The infiltrating agent used in this experiment is mainly composed of borax, aluminum powder, cryolite, magnesium chloride(brown aluminum oxide 80 grit), graphite and rare earth compounds.


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After boron-aluminum co-infiltration(glass beads supplier), the infiltrated layer of the sample is obviously layered, from the inside to the outside: the brownish yellow is the Fe2B phase, the light blue is the FeB phase, and the light yellow near the surface is the Fe2B phase. This is because carbon does not dissolve in the ground compound layer, and carbon escapes from the hindered compound layer and is squeezed into the metal matrix(aluminum oxide 180 grit blast media). A series of chemical reactions occur during the heating process.


(cheap abrasive grade aluminum oxide producers slovakia)Therefore, a redistribution zone of carbon is formed under the ground compound layer(silicon carbide price), that is, a carbon-rich zone, and the carbon concentration is along the The depth of the seepage layer gradually decreases. That is to say, the formation of the aluminized layer is realized by two ways: the diffusion of active boron atoms and aluminum atoms and the reaction of gaseous compounds with the surface of the substrate(brown aluminum oxide factory), which meets the thermodynamic conditions.


According to the results of the orthogonal test, because the transition zone has a small amount of help(green carborundum), which slows down the precipitation of ferrite during the cooling process of the matrix, the boron-containing matrix has a smaller eutectoid carbon concentration, so in the transition layer of boronizing, Easy to form pearlite tissue(aluminum oxide 30 or 40 grit). The process of co-infiltration of boron and aluminum is the same as other chemical heat treatment.(cheap abrasive grade aluminum oxide producers slovakia)


The active atoms of the infiltrating elements should be generated and adsorbed by the surface of the workpiece and diffused into the interior(silicon carbide companies). The penetrating agent used in this experiment is mainly composed of borax, aluminum powder, cryolite, magnesium chloride, graphite and rare earth compounds(white aluminium oxide super fine). When the boron in the solid solution reaches the limit saturation of the Y solid solution, the boron The compound begins to nucleate.


(cheap abrasive grade aluminum oxide producers slovakia)At the same time, the chemical reaction to generate active atoms must also meet thermodynamic conditions(arc fused alumina). Whether the alloy steel is high-temperature boronized aluminum or low-temperature boronized aluminum, compared with carbon steel with similar carbon content, the depth of the infiltrated layer is reduced, and the needle-like insertion of the infiltrated layer becomes flat(steel shot abrasive). A series of chemical reactions occur during the heating process.


That is to say(fused alumina), the formation of the aluminized layer is achieved by the diffusion of active boron atoms and aluminum atoms and the reaction of gaseous compounds with the surface of the substrate, which meets the thermodynamic conditions. The solubility of boron in a-Fe and Y-Fe is very small(glass bead abrasive). After the boron atom penetrates into the surface of the workpiece during the co-infiltration process, a reverse diffusion layer is formed on the metal surface.


When the surface boron content reaches 8.8wt%(black oxide aluminum), the B crystal nucleus of Fe forming a square lattice, the crystal nucleus grows up to be needle-like, and then connects into a dense Fe2B layer. With the continuous penetration of boron atoms, Fe2B continues to grow, and the surface boron concentration continues to increase(garnet abrasive price). The growth process of the boride phase in the co-infiltrated layer can be verified by the metallographic diagram.(cheap abrasive grade aluminum oxide producers slovakia)


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