Abstract A lead-free frit suitable for use on aluminum, consisting essentially of: ______________________________________ 33-42 wt. % SiO 2 8-13 TiO 2 0.5-2.5 SnO 2 0.5-2.5 BaO
2.5-5.0 in the
absence of Ce 2 O 3 ;
0-4.5 if Ce 2 O 3 is
present. SrO
2.2-4.3 ZnO
13-26 Na 2 O
4-9 K 2 O
0.7-6.0 Li 2 O
0.5-4.5 B 2 O 3 1.0-3.5 Sb 2 O 3 0-0.8 Ce 2 O 3 0.5-5.0 P 2 O 5 0.2-1.3 MoO 3 ______________________________________ The frit has a fusion temperature below about 1050° F. and displays good qualities of gloss, acid resistance, and adhesion.
A lead-free frit suitable for use on aluminum and its alloys, said frit consisting essentially of about: ______________________________________
33-42 wt. % SiO.sub.2
8-13 TiO.sub.2
0.5-2.5 SnO.sub.2
0.5-2.5 BaO
2.5-5.0 in the
absence of Ce.sub.2 O.sub.3 ;
0-4.5% if Ce.sub.2 O.sub.3 is
present. SrO
2.2-4.3 ZnO
13-26 Na.sub.2 O
4-9 K.sub.2 O
0.7-6.0 Li.sub.2 O
0.5-4.5 B.sub.2 O.sub.3
1.0-3.5 Sb.sub.2 O.sub.3
0-0.8 Ce.sub.2 O.sub.3
0.5-5.0 P.sub.2 O.sub.5
0.2-1.0 MoO.sub.3
______________________________________ said frit having a fusion temperature below about 1050° F.
Claim 2
Dependent Claim
79 words
A lead-free frit suitable for use on aluminum and its alloys, said frit consisting essentially of about: ______________________________________
33-42 wt. % SiO.sub.2
8-13 TiO.sub.2
0.5-2.5 SnO.sub.2
0.5-2.5 BaO
2.5-5.0 in the
absence of Ce.sub.2 O.sub.3 ;
0-4.5% if Ce.sub.2 O.sub.3 is
present. SrO
2.2-4.3 ZnO
13-26 Na.sub.2 O
4-9 K.sub.2 O
0.7-6.0 Li.sub.2 O
0.5-4.5 B.sub.2 O.sub.3
1.0-3.5 Sb.sub.2 O.sub.3
0-0.8 Ce.sub.2 O.sub.3
0.5-5.0 P.sub.2 O.sub.5
0.2-1.0 MoO.sub.3
______________________________________ said frit having a fusion temperature below about 1050° F.
Claim 3
Dependent Claim
41 words
The frit of claim 1, consisting essentially ______________________________________
37.0% SiO.sub.2
12.2 TiO.sub.2
1.4 SnO.sub.2
1.0 BaO
3.0 SrO
3.4 ZnO
22.0 Na.sub.2 O
6.8 K.sub.2 O
4.3 Li.sub.2 O
1.9 B.sub.2 O.sub.3
2.3 Sb.sub.2 O.sub.3
4.3 P.sub.2 O.sub.5
0.5 MoO.sub.3
______________________________________
Claim 4
Dependent Claim
28 words
The frit of claim 1 or 2, containing essentially no PbO, CdO, F 2 , A1 2 O 3 , ZrO 2 or Bi 2 O 3 .
Claim 5
Dependent Claim
13 words
The frit of claim 3 containing essentially no Ce 2 O 3 .
Claim 6
Dependent Claim
22 words
The frit of claim 1 or 2, further comprising, as impurity components, ______________________________________
0-0.2 Cr.sub.2 O.sub.3 ; and
0-0.3 Fe.sub.2 O.sub.3.
______________________________________