http://www.adamsavenuedesign.com/gold-plated/
Gold plating & Silver plating
Gold plating is a method of depositing a thin layer of gold on the surface of other metal, most often copper or silver.
Gold plating is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards. With direct gold-on-copper plating, the copper atoms have the tendency to diffuse through the gold layer, causing tarnishing of its surface and formation of an oxide/sulfide layer. A layer of a suitable barrier metal, usually nickel, has therefore to be deposited on the copper substrate, forming a copper-nickel-gold sandwich.
Metals may also be coated with gold for ornamental purposes, using a number of different processes usually referred to as gilding.
For less demanding applications in electronics, silver is often used as a cheaper replacement for gold. (Although silver is a better conductor than gold it does oxidize and so gold is better for contacts. However, variable capacitors are considered of the highest quality when they have silver plated plates. In this application there is no make and break contact so gold would not offer any advantage over silver).
Care should be used for parts exposed to high humidity environments. When the silver layer is porous or contains cracks, the underlying copper undergoes rapid galvanic corrosion, flaking off the plating and exposing the copper itself; a process known as red plague.
Historically, silver plate was used to provide a cheaper version of items that might otherwise be made of silver, including cutlery and candlesticks. The earliest kind was Old Sheffield Plate, but in the 19th century new methods of production (including electroplating) were introduced: see Sheffield Plate.
Another method that can be used to apply a thin layer of silver to several objects, such as glass, is the Tollen's Test method, which usually is prepared as follows. Using this method the final reaction can occur by placing Tollen's Reagent in a glass and then adding Glucose/Dextrose and shaking the bottle to perform the reaction.
AgNO3 + KOH -> AgOH + KNO3
AgOH + 2NH3 -> [Ag(NH3)2]1+ + [OH]1- (Note: See Tollen's Reagent)
[Ag(NH3)2]1+ + [OH]1- + Aldehyde(Usually Glucose/Dextrose) -> Ag + 2NH3 + H2O
www.china-wholesalejewelry.com
About the Author
Gold Plating Stainless Steel.
|
|
Baseball Legends 24KT Gold Plated Colorized State Quarter 'Jackie Robinson' $5.74 |
|
|
18K Rose Gold Plated White Pearl Earring 11364 $7.99 |
|
|
23.6"2.5mm VOGUE 18K Y/W GOLD PLATED SNAKE NECKLACE SOLID FILL GP CHAIN md5000ns $13.60 |
|
|
engagement jewelry OVAL CUT GREEN EMERALD White Gold Plated RING NICE 8 Q $5.99 |
|
|
ElCasco M 16 23 K Gold Plated Stapler $125.00 |
|
|
20 Pcs Gold plated earring Hooks Jewelry findings earrings ring 24mm $0.99 |
|
|
Fashion jewelry 18K Gold Plated Green Jade Earring $0.99 |
|
|
NEW!! STERLING SILVER/GOLD PLATED DOUBLE HEART RING WITH DIAMOND ACCENTS $199.00 |
|
|
60 pcs Gold Plated Smooth Tube Antique Brass Metal Beads Spacers 2x30mm MB0030 $0.99 |
|
|
1 LB. GOLD PLATED SCRAP PARTS FOR RECOVERY ONLY!!! $9.99 |
|
|
200pcs gold plated connectors 7.5x3mm W0252A $0.99 |
|
|
5 gold plated bail enamel crystal pendant bread for European charm bracelet $7.50 |
|
|
5 gold plated enamel crystal charm pendant ice cream for bracelet necklace $5.99 |
|
|
GENUINE GENTS CITIZEN DAY DATE GOLD PLATED QUARTZ JAPAN WRIST WATCH $11.85 |
|
|
NWOT Nugget style I love you with hearts Rhod. Gold Plated Bracelet 8in $0.99 |
|
|
2x 6ft HDMI M/M Male 24K Gold Plated Cable Cord FULL HD $8.88 |
|
|
LOTS 30pcs gold plated rose toggle clasp 25mm $0.99 |
|
|
Beadalon Ring Size Memory Wire Gold Plated 95 Loops $2.99 |
|
|
80 Pcs Gold plated split Open Jump Rings findings connectors 5 mm $0.45 |
|
|
vtg Gold Plated Ribbon Choker Necklace Snake Style Chain Dangling 13 3/4" $3.00 |
|
|
Free ship ! 200 Pcs Gold plated findings Head PINS 30mm JAHP30MM02 $0.99 |
|
|
New Charms Round Turquoise Beads White Gold Plated Bracelet Jewelry ZB372 $0.99 |
|
|
5pcs Gold Plated Snake Chain Charm Bracelet Finding $4.95 |
|
|
5 gold plated bail enamel crystal pendant cake for European charm bracelet $7.50 |
|
|
Free ship ! 130 Pcs Gold plated findings EYE PINS 45mm JAEP45MM02 $1.57 |
|
|
Vintage Ladies Omega De Ville Quartz Gold Plated Wrist Watch $126.02 |
|
|
GENUINE GENTS HMT SONA SUPER FLAT GOLD PLATED 17 JEWELS WINDING WRIST WATCH $14.46 |
|
|
Wholesale 500Pcs Gold Plated Open Jump Rings 4mm $2.68 |
|
|
wedding jewelry round cut red ruby stone white gold plated pendant necklace $0.99 |
|
|
Fashion jewelry Set 18K GOld Plated Turquoise Dragon Earring Pendant $9.99 |
|
|
Free Ship2000Pcs Gold Plated Round Spacers Beads 2.5mm $2.22 |
|
|
Fashion jewelry Set 18K Gold Plated Turquoise Earring Ring Pendant $9.99 |
|
|
6ct Black Onyx Gemstone men's 18K Gold Plated Ring sz 9 $14.99 |
|
|
Fashion jewelry Set 18K GOld Plated White Shell Pearl Earring Pendant $9.99 |
|
|
New Men's Gold Plated on .925 Sterling Silver Name Ring $59.00 |
|
|
2 - Gold Plated Twist 7mm Round Gem Belly Button Naval Ring 16 Gauge 3/8" BY126 $10.98 |
|
|
15 Feet RCA Stereo RG-59 Gold Plated Cable Audio Cord $13.99 |
|
|
2pc Gold Plated Flash Crystal Rhinestone Big Hole loose Beads zw012 $2.99 |
|
|
1.68 Ct Oval Ecstasy Mystic Topaz and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.68 Ct Oval Ecstasy Mystic Topaz and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.68 Ct Oval Ecstasy Mystic Topaz and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.68 Ct Oval Ecstasy Mystic Topaz and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.68 Ct Oval Ecstasy Mystic Topaz and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.48 Ct Oval Red Rhodolite Garnet and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.48 Ct Oval Red Rhodolite Garnet and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.48 Ct Oval Red Rhodolite Garnet and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.48 Ct Oval Red Rhodolite Garnet and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.48 Ct Oval Red Rhodolite Garnet and Diamond Gold Plated Silver Ring $154.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $134.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $134.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $134.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $134.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $134.99 |
|
|
1.18 Ct Oval Orange Red Madeira Citrine and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.18 Ct Oval Orange Red Madeira Citrine and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.18 Ct Oval Orange Red Madeira Citrine and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.18 Ct Oval Orange Red Madeira Citrine and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.18 Ct Oval Orange Red Madeira Citrine and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.23 Ct Oval Whiskey Quartz and Topaz Gold Plated Sterling Silver Ring $94.99 |
|
|
1.23 Ct Oval Whiskey Quartz and Topaz Gold Plated Sterling Silver Ring $94.99 |
|
|
1.23 Ct Oval Whiskey Quartz and Topaz Gold Plated Sterling Silver Ring $94.99 |
|
|
1.23 Ct Oval Whiskey Quartz and Topaz Gold Plated Sterling Silver Ring $94.99 |
|
|
1.23 Ct Oval Whiskey Quartz and Topaz Gold Plated Sterling Silver Ring $94.99 |
|
|
1.43 Ct Oval Lemon Quartz and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.43 Ct Oval Lemon Quartz and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.43 Ct Oval Lemon Quartz and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.43 Ct Oval Lemon Quartz and Topaz Gold Plated Silver Ring $94.99 |
|
|
1.43 Ct Oval Lemon Quartz and Topaz Gold Plated Silver Ring $94.99 |
|
|
925 Silver/Gold Plated 35mm InsideOut CZ Hoop Earrings $25.00 |
|
|
925 Silver/Gold Plated 35mm InsideOut CZ Hoop Earrings $25.00 |
|
|
GENUINE GENTS SEIKO DAY DATE GOLD PLATED QUARTZ JAPAN WRIST WATCH $22.62 |
|
|
1.24 Ct Oval Blue Tanzanite and Diamond Gold Plated Sterling Silver Ring $199.99 |
|
|
1.24 Ct Oval Blue Tanzanite and Diamond Gold Plated Sterling Silver Ring $199.99 |
|
|
1.24 Ct Oval Blue Tanzanite and Diamond Gold Plated Sterling Silver Ring $199.99 |
|
|
1.24 Ct Oval Blue Tanzanite and Diamond Gold Plated Sterling Silver Ring $199.99 |
|
|
1.24 Ct Oval Blue Tanzanite and Diamond Gold Plated Sterling Silver Ring $199.99 |
|
|
Old Victorian Pinchbeck Faux Citrine Brooch 1860 Gold Plated Antique Vintage $47.38 |
|
|
1.48 Ct Oval Red Garnet and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.48 Ct Oval Red Garnet and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.48 Ct Oval Red Garnet and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.48 Ct Oval Red Garnet and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.48 Ct Oval Red Garnet and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
3x2mm SMOOTH Gold Plated Metal Rondelle Beads 100 $4.44 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $159.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $159.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $159.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $159.99 |
|
|
1.68 Ct Checkerboard Swiss Blue Topaz and Diamond Gold Plated Silver Ring $159.99 |
|
|
Vintage Art Deco ORIS Gold Plated Ladies Wrist Watch with Original Box - SWISS $11.85 |
|
|
1.5 Carat**White Gold Plated 18K GP CZ Wedding Engagement Band Ring Size 5 $9.99 |
|
|
MINT CONDITION DUNHILL GOLD PLATED LIGHTER $99.00 |
|
|
1.23 Ct Oval Green Peridot and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.23 Ct Oval Green Peridot and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.23 Ct Oval Green Peridot and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.23 Ct Oval Green Peridot and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
1.23 Ct Oval Green Peridot and Diamond Gold Plated Sterling Silver Ring $129.99 |
|
|
5 gold plated bail enamel crystal pendant cake for European charm bracelet $7.50 |
|
|
WEDDING! Fashion Jewelry Round Cut 18k White Gold Plated Aquamarine Lady Ring 8 $4.98 |
|
|
Fashion 18K white gold plated diamond cut crystal solitaire wedding ring Sz5/J $3.50 |
|
|
Lovely Crystal Pave' Goldplated HEART 14kt Goldfilled Herringbone Chain Pendant $34.00 |
