Lost foam casting method of three-dimensional network ceramic-iron-based composite material
An iron-based composite material and lost foam casting technology, which is applied in the direction of casting molding equipment, molds, and mold components, can solve the problems of poor economy, poor wettability between ceramics and metal substrates, etc., and achieve poor wettability , Improving the comprehensive mechanical properties and hindering the effect of interface reaction
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[0052] Example 1
[0053] (1) Perform surface roughening, neutralization, sensitization, activation and reduction pretreatments on the three-dimensional network ceramic 3 at room temperature to make the surface of the ceramic adhere to hypophosphite ions. The plating solution with nickel sulfate as the main salt includes: Nickel sulfate solution 20g / L, sodium hypophosphite solution 30g / L, sodium acetate solution 20g / L, sodium citrate solution 5g / L and lead chloride solution 0.003g / L configure chemical plating solution and heat to 70℃, The nickel ion is chemically reduced to metallic nickel, and a Ni-P composite coating is deposited and formed on the surface of the ceramic. The surface of the three-dimensional network ceramic 3 is electrolessly plated with nickel; the surface of the three-dimensional network ceramic 3 after plating is as image 3 As shown, the obtained Ni-P composite coating is uniform, dense, and firmly attached to the surface of the three-dimensional network cera...
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[0062] Example 2
[0063] (1) Perform surface roughening, neutralization, sensitization, activation and reduction pretreatments on the three-dimensional network ceramic 3 at room temperature to make the surface of the ceramic adhere to hypophosphite ions. The plating solution with nickel sulfate as the main salt includes: Nickel sulfate solution 28g / L, sodium hypophosphite solution 35g / L, sodium acetate solution 25g / L, sodium citrate solution 10g / L and lead chloride solution 0.010g / L configure the chemical plating solution and heat it to 80℃, The nickel ion is chemically reduced to metallic nickel, and a Ni-P composite coating is deposited and formed on the surface of the ceramic. The surface of the three-dimensional network ceramic 3 is electrolessly plated with nickel; the surface of the three-dimensional network ceramic 3 after plating is as Figure 4 As shown, the obtained Ni-P composite coating is uniform, dense, and firmly attached to the surface of the three-dimensional net...
Example Embodiment
[0072] Example 3
[0073] (1) Perform surface roughening, neutralization, sensitization, activation and reduction pretreatments on the three-dimensional network ceramic 3 at room temperature to make the surface of the ceramic adhere to hypophosphite ions. The plating solution with nickel sulfate as the main salt includes: Nickel sulfate solution 25g / L, sodium hypophosphite solution 32g / L, sodium acetate solution 22g / L, sodium citrate solution 8g / L and lead chloride solution 0.005g / L configure chemical plating solution and heat to 75℃, The nickel ion is chemically reduced to metallic nickel, and a Ni-P composite coating is deposited and formed on the surface of the ceramic. The surface of the three-dimensional network ceramic 3 is electrolessly plated with nickel; the surface of the three-dimensional network ceramic 3 after plating is as follows Figure 5 As shown, the obtained Ni-P composite coating is uniform, dense, and firmly attached to the surface of the three-dimensional net...
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