Archive for the ‘jewelry’ tag
Copper Plated
Copper Plated
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 New Premium HDMI 1.3 Cable 6 Ft Gold for PS3 HDTV 1080p  US $2.71
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 Toshiba Cord Coil Handset Phone 12' foot ft Grey US $.99
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 Eastwood Electroplating System - Tin Zinc Plating Kit US $59.99
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 1 Neodymium Magnets NdFeB Rare Earth 1 x 1 Magnet US $12.50
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 4PCS Wholesale Gorgeous Shell Flower Alloy Bracelet SE3 US $14.96
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 5 Black Clip SP Bracelet Charm Bracelet 23cm M5139 US $.81
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 Splendid "22KGP" NIB Zebra Cap Fountain Pen--Best Gift US $3.99
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 NEW Phoenix Gold Cable ANT TV SAT Coax Video Cable 30FT US $9.50
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 quality screw silver bead fit pandora bracelet J562 US $2.99
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 Pandora style cuff w/removable bead set DIY B2 US $.99
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 INSTANT SILVER Amazing SILVER PLATING Formula. US $17.95
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 30g Antique Copper Plated Eyepins 30mm Approx 200 FB068 US $.99
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 A0730 Abalone Shell With Rhinestone Flower Pendant Bead US $3.99
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 NEW Premium 1080p Gold HDMI 1.3 Cable 6 FT for PS3 HDTV US $7.95
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 HEARTS MULTI COLOR PRECIOUS STONE MAGNETIC BRACELET US $9.99
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 3 SILVER CORE BEADS PANDORA CHAMILIA BIAGI TROLL 05 US $5.99
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 200 Gold Plated Stardust Copper Beads 6mm B939 US $.99
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 D90161 K-Gold Plated Copper Natural Amethyst Pendant US $4.99
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 blueeye boy screw silver bead fit pandora bracelet J685 US $3.75
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 Classical Guitar String Set Medium Hard Tension US $1.80
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 Mixed 100PCS silver Crystal Beads Rondelle Space 6 mm. US $2.16
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 5set Silver Flat Hollow out Motif Dangle Earrings E1213 US $9.89
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 Pandora style cuff w/removable bead set DIY B3 US $.99
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 D90178 K-Gold Plated Copper Botswana Agate Pendant Bead US $4.99
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 cute hedgehog silver bead charm fit auth. Pandora J033 US $1.99
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 BLUE SAND GOLDSTONE GEMSTONE CHIP BEAD NECKLACE 18"L US $7.99
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 D90194 K-Gold Plated Copper Botswana Agate Pendant Bead US $4.99
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 LOT FIVE 2008 - 1 OZ KRUGERRAND GOLD SA GEM COPY COINS US $39.95
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 LOTS 400pcs tibet silver gyral spacer bead5*2mm US $.99
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 Pandora style cuff w/removable bead set DIY B4 US $.99
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 14k gold plated screw bead fit pandora bracelet J509 US $4.24
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 1M DVI-D Male to DVI-D 25 Pin Dual Link Gold Cable Lead US $9.73
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 6Ft HDMI 1.3 Cat2 Certified Cable Ultimate 26AWG 1600p US $21.51
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 120 Silver Plated Stardust Round Spacers Beads 8mm B663 US $.99
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 HOWLITE TURQUOISE GEMS CARVED PENDANT BEAD 19" NECKLACE US $6.99
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 925 style Silver plated Bracelet Fits Pandora 21cm P06 US $3.99
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 A0732 K-Gold Plated Copper Abalone Shell Pendant Bead US $3.99
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 Pandora style cuff w/removable bead set DIY B5 US $.99
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 gold flower dangle srew charm bead fit Pandora J722 US $2.99
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 NEW Gold DVI male to HDMI Cable for HDTV LCD PS3 6ft 2m US $7.98
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While doing electroplating of Copper as a project I found the Cathode is depositing with a Black material.Why?
I used copper sulphate solution as electrolyte and then tried with Sodium chloride and dilute acids .All cases in place of copper I found black material is depositing on cathode.any one suggest a good electrolyte for copper plating?
Well, I do not quite understand what you did. What do you mean "then tried with Sodium chloride and dilute acids"? Please put forward details. anyway, since the reduction potential of C++ is greater than H+, even if you simply put a piece of iron nail into CuSO4 solution---Cu metal will begin to deposit on it and this iron nail would look like a piece of copper nail.
I am not sure if your set up is correct:
The anode and cathode in the electroplating cell are connected to an external supply of direct current, a battery or, more commonly, a rectifier. The anode is connected to the positive terminal of the supply, and the cathode (article to be plated) is connected to the negative terminal. When the external power supply is switched on, the metal at the anode is oxidized from the zero valence state to form cations with a positive charge. These cations associate with the anions in the solution. The cations are reduced at the cathode to deposit in the metallic, zero valence state.
