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- Q6395621 subject Q15774866.
- Q6395621 subject Q7036426.
- Q6395621 subject Q8622119.
- Q6395621 subject Q8803164.
- Q6395621 abstract "Keum-boo (also Kum-Boo or Kum-bu — Korean "attached gold") is an ancient Korean gilding technique used to apply thin sheets of gold to silver, to make silver-gilt. Traditionally, this technique is accomplished by first depleting a surface of sterling silver to bring up a thin layer of fine silver. Then 24 carat gold foil is applied with heat and pressure - mechanical gilding - to produce a permanent diffusion bond. Pure precious metals such as gold and silver have a very similar atomic structure and therefore have a good potential for bonding. Heating these metals to a temperature between 500-700°F increases the movement of the atoms. When pressure is added, this causes an electron exchange at the surface between the two metals, creating a permanent diffusion bond. This diffusion bond occurs far below the soldering temperature for either metal. (Dhein, 2004)Examples of this technique have probably been observed, but not positively identified on pieces from the second half of the first millennium B.C. and from the early first millennium A.D. (Oddy, 1981)This technique is used in many cultures, including Chinese, Japanese and in the West to bond gold to other metals, including iron, copper, aluminum, gold alloys, white gold, palladium and platinum. Foil made from gold alloys can be applied to silver and other metals by first depletion gilding the surface of the foil. (Lewton-Brain, 1987–1993)".
- Q6395621 wikiPageExternalLink 1998-11--kumboo.html.
- Q6395621 wikiPageExternalLink keumboo.htm.
- Q6395621 wikiPageExternalLink aug04.cfm.
- Q6395621 wikiPageWikiLink Q1089.
- Q6395621 wikiPageWikiLink Q1090.
- Q6395621 wikiPageWikiLink Q11074667.
- Q6395621 wikiPageWikiLink Q1334300.
- Q6395621 wikiPageWikiLink Q13389141.
- Q6395621 wikiPageWikiLink Q1401905.
- Q6395621 wikiPageWikiLink Q15774866.
- Q6395621 wikiPageWikiLink Q163214.
- Q6395621 wikiPageWikiLink Q18097.
- Q6395621 wikiPageWikiLink Q31576.
- Q6395621 wikiPageWikiLink Q390584.
- Q6395621 wikiPageWikiLink Q5260665.
- Q6395621 wikiPageWikiLink Q663.
- Q6395621 wikiPageWikiLink Q677.
- Q6395621 wikiPageWikiLink Q7036426.
- Q6395621 wikiPageWikiLink Q753.
- Q6395621 wikiPageWikiLink Q8622119.
- Q6395621 wikiPageWikiLink Q880.
- Q6395621 wikiPageWikiLink Q8803164.
- Q6395621 wikiPageWikiLink Q897.
- Q6395621 wikiPageWikiLink Q9121.
- Q6395621 wikiPageWikiLink Q9176.
- Q6395621 comment "Keum-boo (also Kum-Boo or Kum-bu — Korean "attached gold") is an ancient Korean gilding technique used to apply thin sheets of gold to silver, to make silver-gilt. Traditionally, this technique is accomplished by first depleting a surface of sterling silver to bring up a thin layer of fine silver. Then 24 carat gold foil is applied with heat and pressure - mechanical gilding - to produce a permanent diffusion bond.".
- Q6395621 label "Keum-boo".