Preparation method of nickel-coated ceramic composite powder based on selective laser melting molding
A selective laser melting, ceramic powder technology, applied in liquid chemical plating, transportation and packaging, metal processing equipment, etc. and other problems, to achieve the effect of improving the plating quality, speeding up the reaction speed, and increasing the specific surface area
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Embodiment 1
[0043]Take 35ml of formic acid and 4ml of 30% hydrogen peroxide and mix them evenly to obtain an etching solution.
[0044] Add 2g Al to the etching solution 2 O 3 The powder was magnetically stirred for 30 min, filtered, washed twice with deionized water, once with absolute ethanol, and dried in an oven at 65°C for 2 hours to obtain etched Al 2 O 3 powder.
[0045] Weigh 1 g of stannous chloride dihydrate, dissolve it in 2 ml of concentrated hydrochloric acid, and dilute to 50 ml with deionized water to obtain a sensitizing solution.
[0046] Weigh 0.025 g of palladium chloride, dissolve it in 0.5 ml of concentrated hydrochloric acid, and dilute to 50 ml with deionized water to obtain an activation solution.
[0047] The above etching Al 2 O 3 The powder was placed in the sensitizing solution, magnetically stirred for 30 min, centrifuged, washed twice with deionized water and once with absolute ethanol to obtain sensitized Al 2 O 3 powder.
[0048] Finally, the sensi...
Embodiment 2
[0067] Take 30ml of formic acid and 4ml of 30% hydrogen peroxide, and mix them evenly to obtain an etching solution.
[0068] Add 1.5g ZrO to the etching solution 2 The powder was magnetically stirred for 60 min, filtered, washed with deionized water for 3 times, washed with absolute ethanol for 2 times, and dried in an oven at 70 °C for 1 h to obtain etched ZrO 2 powder.
[0069] Weigh 0.5 g of stannous chloride dihydrate, dissolve it in 1 ml of concentrated hydrochloric acid, and dilute to 50 ml with deionized water to obtain a sensitizing solution.
[0070] Weigh 0.02 g of palladium chloride, dissolve it in 0.3 ml of concentrated hydrochloric acid, and dilute to 50 ml with deionized water to obtain an activation solution.
[0071] The above etched ZrO 2 The powder was placed in the sensitizing solution, magnetically stirred for 40 min, centrifuged, rinsed 3 times with deionized water and 2 times with absolute ethanol to obtain sensitized ZrO 2 powder.
[0072] Finally,...
Embodiment 3
[0086] Take 40ml of formic acid and 4ml of 30% hydrogen peroxide, and mix them evenly to obtain an etching solution.
[0087] Add 2.5 g of SiC powder to the etching solution, stir magnetically for 60 min, filter, rinse with deionized water 4 times, rinse with absolute ethanol 3 times, and dry in an oven at 80 °C for 0.5 h to obtain etched SiC powder.
[0088] Weigh 2 g of stannous chloride dihydrate, dissolve it in 3 ml of concentrated hydrochloric acid, and dilute to 50 ml with deionized water to obtain a sensitizing solution.
[0089] Weigh 0.05 g of palladium chloride, dissolve it in 0.75 ml of concentrated hydrochloric acid, and dilute to 50 ml with deionized water to obtain an activation solution.
[0090] The etched SiC powder was placed in a sensitizing solution, magnetically stirred for 50 min, centrifuged, rinsed 4 times with deionized water and 3 times with anhydrous ethanol to obtain sensitized SiC powder.
[0091] Finally, the sensitized SiC powder was placed in t...
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