The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 1984
Filed:
Feb. 04, 1983
Shinagawa Refractories Co., Ltd., Tokyo, JP;
Abstract
Carbon in the form of graphite is commonly used in refractories for metallurgical purposes because of its ability to increase resistance to corrosion. However, if the graphite in the refractory becomes oxidized, it greatly loses this ability. For this reason, it is very important for a refractory to have good resistance to oxidation, but there are at present no refractories fully satisfactory from the standpoints of resistance to oxidation and hot strength. The present invention is a carbon-containing refractory having excellent resistance to oxidation and hot strength. These favorable properties are obtained by the addition in the refractory of both boron carbide and metal powder, the powder comprising at least one metal selected from Al, Si, Fe, and Ni.
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