Assertion: bismuth | /r/ObjectUse | used as a plating material
Facets:
value: under vacuum
type: LOCATION
Source sentences:
text: Bismuth is just like silver but faster reacting, if bismuth is used as a plating material under vacuum (i.e. no air present) it looks just like silver & then will dull to a grey color (with air), then after a few days may develop rainbow effects that silver objects would normally take several years to develop. ---