Si/SiC-based sintered material having excellent corrosion resistance and kiln furniture
AssigneeNGK Insulators, Ltd.
InventorShigeru Hanzawa
Life of this patent
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Abstract
A Si/SiC-based sintered material containing Si and SiC as constituents, which has a SiO.sub.2 content of 0.5% by weight or less and an oxygen content of 0.25% by weight or less and which is corrosion-resistant in a high-temperature atmosphere containing an element having a high ionic-bond formability. A kiln furniture made of the sintered material. The sintered material and the kiln furniture have high corrosion resistance in a high-temperature environment containing, as a corrosion source, an element having a high ionic-bond formability and can withstand long-term use.
Claims5
A Si/SiC-based sintered material comprising Si and SiC as constituents, said sintered material having a SiO.sub.2 content of 0.5% by weight or less and an oxygen content of 0.25% by weight or less, and the Si/SiC-based sintered material being corrosion-resistant in a temperature range of 800.degree.-1,400.degree. C. and an atmosphere containing at least one element selected from the group consisting of Ge, As, Se, In, Sn, Sb, Te, Tl, Pb, Bi, Cl and F.
A kiln furniture made of a Si/SiC-based sintered material comprising Si and SiC as constituents, said sintered material having a SiO.sub.2 content of 0.5% by weight or less and an oxygen content of 0.25% by weight or less, the Si/SiC-based sintered material being corrosion-resistant in a temperature range of 800.degree.-1,400.degree. C. and an atmosphere containing at least one element selected from the group consisting of Ge, As, Se, In, Sn, Sb, Te, Tl, Pb, Bi, Cl and F.
A kiln lining material made of a Si/SiC-based sintered material comprising Si and SiC as constituents, said sintered material having a SiO.sub.2 content of 0.5% by weight or less and an oxygen content of 0.25% by weight or less, the Si/SiC-based sintered material being corrosion-resistant in a temperature range of 800.degree.-1,400.degree. C. and an atmosphere containing at least one element selected from the group consisting of Ge, As, Se, In, Sn, Sb, Te, Tl, Pb, Bi, Cl and F.
A continuous kiln comprising a region which is heated to 800.degree.-1,400.degree. C., the region being covered with a lining material made of a Si/SiC-based sintered material comprising Si and SiC as constituents, said sintered material having a SiO.sub.2 content of 0.5% by weight or less and an oxygen content of 0.25% be weight or less, the Si/SiC-based sintered material being corrosion-resistant in a temperature range of 800.degree.-1,400.degree. C. and an atmosphere containing an element having a high ionic-bond formability at least one element selected from the group consisting of Ge, As, Se, In, Sn, Sb, Te, Tl, Pb, Bi, Cl and F.
Dependencies are inferred from the claim text.