| abstract |
1,151,298. Glass metal compositions for coating. INTERNATIONAL BUSINESS MACHINES CORP. 22 Nov., 1967 [29 Nov., 1966], No. 53069/67. Heading C1M. [Also in Division C7] A composition for firing on to a ceramic substrate to provide an electrically conductive pattern, comprises a vitreous frit with a particulate metallic content consisting of Au 59À8- 70%, Pt 10-20% with the balance Pd. The frit preferably comprises bismuth trioxide and/or lead borosilicate glass. The suspension vehicle comprises a gelation agent (e.g. castor oil or aluminium stearate), a resinous binder (e.g. natural gums, synthetic resins or cellulosic resinous materials) and a solvent (e.g. higher boiling paraffins, aromatic hydrocarbons or butyl carbitol acetate). The paste is applied by silk screening and is then dried and fired to give a coating which may readily be tinned (e.g. with a 90% Pb 10% Sn solder). |