Glass ceramic and laminated ceramic electronic component
A glass ceramic that contains a glass containing Si, B, Al, and Zn and aggregates. The glass has a SiO 2 content of 20% by weight to 55% by weight, a B 2 O 3 content of 15% by weight to 30% by weight, Al 2 O 3 , and ZnO, wherein a weight ratio of the SiO 2 to the B 2 O 3 (SiO 2 /B 2 O 3 ) is 1.21 or higher, and a weight ratio of the Al 2 O 3 to the ZnO (Al 2 O 3 /ZnO) is 0.8 to 1.3. A TiO 2 content, a ZrO 2 content, a SnO 2 content, and a SrO content in the glass each are 0% by weight to 5% by weight. The aggregates include 20% by weight to 50% by weight of SiO 2 , 1% by weight to 10% by weight of TiO 2 , 3% by weight or less of ZrO 2 , and 1% by weight or less of ZnO each relative to the weight of the glass ceramic.
1 . A glass ceramic comprising:
a glass containing:
SiO 2 at a content of 20% by weight to 55% by weight;
B 2 O 3 at a content of 15% by weight to 30% by weight;
Al 2 O 3 ; and
ZnO, wherein
a weight ratio of the SiO 2 to the B 2 O 3 (SiO 2 /B 2 O 3 ) is 1.21 or higher, and
a weight ratio of the Al 2 O 3 to the ZnO (Al 2 O 3 /ZnO) is 0.8 to 1.3, and
a TiO 2 content, a ZrO 2 content, a SnO 2 content, and a SrO content in the glass each being 0% by weight to 5% by weight; and
aggregates including:
20% by weight to 50% by weight of a SiO 2 aggregate,
1% by weight to 10% by weight of a TiO 2 aggregate,
3% by weight or less of a ZrO 2 aggregate, and
1% by weight or less of a ZnO aggregate,
each relative to a weight of the glass ceramic.
2 . The glass ceramic according to claim 1 , wherein the SiO 2 aggregate is quartz.
3 . The glass ceramic according to claim 1 , wherein the weight ratio of the SiO 2 to the B 2 O 3 (SiO 2 /B 2 O 3 ) of the glass is 1.21 to 3.67.
4 . The glass ceramic according to claim 1 , wherein the glass further contains at least one metal as a sub-component, the at least one metal being selected from the group consisting of an alkali metal, an alkaline-earth metal, and a different metal from that of a main component of the glass.
5 . The glass ceramic according to claim 4 , wherein
the alkali metal comprises at least one selected from the group consisting of Li, Na and K,
the alkaline-earth metal comprises at least one selected from the group consisting of Be, Mg, Ca, Sr, and Ba, and
the different metal comprises at least one selected from the group consisting of Ti, Zr, and Sn.
6 . The glass ceramic according to claim 4 , wherein a sum of an amount of the sub-component is 0.1% by weight to 5% by weight of the weight of a whole of the glass.