Difference between revisions of "Alpha alumina"
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The synthetic, hexagonal crystalline form of [[aluminum%20oxide|aluminum oxide]] that occurs naturally as the mineral [[corundum|corundum]]. As an abrasive, alpha alumina removes silver tarnish effectively but also removes a significant amount of silver (Wharton, et al, 1990). | The synthetic, hexagonal crystalline form of [[aluminum%20oxide|aluminum oxide]] that occurs naturally as the mineral [[corundum|corundum]]. As an abrasive, alpha alumina removes silver tarnish effectively but also removes a significant amount of silver (Wharton, et al, 1990). | ||
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| + | == Comparisons == | ||
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| + | [[media:download_file_231.pdf|Properties of Common Abrasives (pdf)]] | ||
== Additional Information == | == Additional Information == | ||
Revision as of 13:11, 30 May 2020
Description
The synthetic, hexagonal crystalline form of Aluminum oxide that occurs naturally as the mineral Corundum. As an abrasive, alpha alumina removes silver tarnish effectively but also removes a significant amount of silver (Wharton, et al, 1990).
Comparisons
Properties of Common Abrasives (pdf)
Additional Information
° G.Wharton, S.Lansing, W.Ginell, "A Comparative Study of Silver Cleaning Abrasives" JAIC 29:13-31, 1990. LINK