A kind of preparation method of iron-boron compound coating
A compound, iron-boron technology, applied in coating, metal material coating process, etc., can solve problems such as easy formation of soft belt, deterioration of coating performance, cumbersome process, etc., to achieve huge economic benefit potential and avoid instability The effect of discharge and cumbersome process
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Embodiment 1
[0016] The chemical composition of each element is: 8.1% B by weight percentage, and the iron-boron compound material with Fe as the balance is used as the electrode material, wherein the electrode material contains Fe 2 Phase B and Fe 3 Phase B. Coating preparation by EDM process: (1) Surface treatment of the workpiece to be used for EDM, including rust removal, degreasing, and if there are cracks on the surface, turning is required to eliminate the crack layer; (2) The aforementioned electrode material is used as the electrode for EDM deposition, and an inert gas is used for protection during the deposition process. The specific process parameters of the deposition are: the output power is 1500W, the output voltage is 290V, and the deposition rate is 8min / cm 2 . The iron-boron compound of the final coating is Fe 2 B and Fe 3 B, In addition, the coating also contains a martensitic phase with a weight fraction of 5.0%.
Embodiment 2
[0018] The chemical composition of each element is: 8.8% B by weight percentage, and the iron-boron compound material whose balance is Fe is used as the electrode material, wherein the electrode material contains Fe 2 Phase B. Coating preparation by EDM process: (1) Surface treatment of the workpiece to be used for EDM, including rust removal, degreasing, and if there are cracks on the surface, turning is required to eliminate the crack layer; (2) The aforementioned electrode material is used as the electrode for EDM deposition, and an inert gas is used for protection during the deposition process. The specific process parameters of the deposition are: the output power is 2900W, the output voltage is 120V, and the deposition rate is 1min / cm 2 . The iron-boron compound of the final coating is Fe 2 B and Fe 3 B, In addition, the coating also contains a martensitic phase with a weight fraction of 4.1%.
Embodiment 3
[0020] The chemical composition of each element is: 9.7% B by weight percentage, and the iron-boron compound material whose balance is Fe is used as the electrode material, wherein the electrode material contains Fe 2 B phase and FeB phase. Coating preparation by EDM process: (1) Surface treatment of the workpiece to be used for EDM, including rust removal, degreasing, and if there are cracks on the surface, turning is required to eliminate the crack layer; (2) The aforementioned electrode material is used as the electrode for EDM deposition, and an inert gas is used for protection during the deposition process. The specific process parameters of the deposition are: the output power is 2350W, the output voltage is 200V, and the deposition rate is 6min / cm 2 . The iron-boron compound of the final coating is Fe 2 B. Fe 3 B and FeB, in addition, the coating also contains a martensitic phase with a weight fraction of 2.8%.
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