Solution for dissolving noble metal alloys which include tin and re-work method of removing said alloys from a substrate.

摘要

The inventive solution for dissolving metal alloys which include tin comprises
(1) KJ in an amount of at least 0.3 moles/liter,
(2) J2 an amount of at least 0.195 moles/liter, and
(3) halogen ions selected from the group consisting of fluoride, chloride and bromide in an amount of at least 0.3 moles/liter.
<??>The solution is used in a rework-method where the substrates are subjected to said solution for removing noble metal alloys containing tin while features formed of refractory metals are retained.