Ceramic coatings and method of applying

Claim 1

THE METHOD OF PRODUCING CERAMIC COATINGS FOR REFRACTORY AND ABRASIVE ARTICLES, WHICH COMPRISES PREPARING A BODY MIX CONTAINING GRAINS OF A DIFFICULTY WETTABLE REFRACTORY MATERIAL OF THE GROUP CONSISTING OF GRAPHITE, SILICON CARBIDE, FUSED ALUMINA AND MIXTURES THEREOF, INCORPORATING IN THE BODY MIX A SMALL PROPORTION OF A PULVERIZED FRIT CONSISTING ESSENTIALLY OF A REACTION PRODUCT OF FUSED METAL OXIDES, THE PRINCIPAL METALS CONTAINED IN SAID FRIT BEING PRESENT IN SUCH PROPORTIONS AS TO BE REPRESENTED, WHEN COMPUTED AS THEIR OXIDES SIO2, MNO2 AND FE2O3, BY A POINT ON AN SIO2-MNO2-FE2O3 TRIAXIAL DIAGRAM LYING WITHIN THE AREA ENCLOSED BY A POLYGON THE COORDINATES OF THE SUCCESSIVE VERTICES OF WHICH, NAMING THE OXIDES IN THE FOREGOING ORDER, ARE: 45-0-55, 45-55-0, 10-90-0, 5-90-5, 5-70-25, 0-70-30, 0-30-70, 5-30-65, 5-5-90, 10-0-90, AND THE OXYGEN CONTENT OF THE FRITTED OXIDES OF SAID PRINCIPAL METALS BEING SUBSTANTIALLY LESS THAN WOULD CORRESPOND TO SAID COMPUTED OXIDES, WHEREBY SAID FRIT CONTAINS NO LOOSELY COMBINED OXYGEN, INCORPORATING IN THE BODY MIX A CONSIDERABLY SMALLER PROPORTION OF A WETTING AGENT ADAPTED UPON SUBSEQUENT FUSION OF SAID FRIT TO REDUCE THE SURFACE TENSION THEREOF WITH RESPECT TO THE SURFACES OF SAID REFRACTORY GRAINS, FORMING THE BODY MIX INTO THE DESIRED SHAPED OF THE ARTICLE, AND FIRING THE ARTICLE TO FUSE SAID FRIT ON THE SURFACES OF SAID REFRACTORY GRAINS.

Claim 2

THE METHOD OF PRODUCING CERAMIC COATINGS FOR REFRACTORY AND ABRASIVE ARTICLES, WHICH COMPRISES PREPARING A BODY MIX CONTAINING GRAINS OF A DIFFICULTY WETTABLE REFRACTORY MATERIAL OF THE GROUP CONSISTING OF GRAPHITE, SILICON CARBIDE, FUSED ALUMINA AND MIXTURES THEREOF, INCORPORATING IN THE BODY MIX A SMALL PROPORTION OF A PULVERIZED FRIT CONSISTING ESSENTIALLY OF A REACTION PRODUCT OF FUSED METAL OXIDES, THE PRINCIPAL METALS CONTAINED IN SAID FRIT BEING PRESENT IN SUCH PROPORTIONS AS TO BE REPRESENTED, WHEN COMPUTED AS THEIR OXIDES SIO2, MNO2 AND FE2O3, BY A POINT ON AN SIO2-MNO2-FE2O3 TRIAXIAL DIAGRAM LYING WITHIN THE AREA ENCLOSED BY A POLYGON THE COORDINATES OF THE SUCCESSIVE VERTICES OF WHICH, NAMING THE OXIDES IN THE FOREGOING ORDER, ARE: 45-0-55, 45-55-0, 10-90-0, 5-90-5, 5-70-25, 0-70-30, 0-30-70, 5-30-65, 5-5-90, 10-0-90, AND THE OXYGEN CONTENT OF THE FRITTED OXIDES OF SAID PRINCIPAL METALS BEING SUBSTANTIALLY LESS THAN WOULD CORRESPOND TO SAID COMPUTED OXIDES, WHEREBY SAID FRIT CONTAINS NO LOOSELY COMBINED OXYGEN, INCORPORATING IN THE BODY MIX A CONSIDERABLY SMALLER PROPORTION OF A WETTING AGENT ADAPTED UPON SUBSEQUENT FUSION OF SAID FRIT TO REDUCE THE SURFACE TENSION THEREOF WITH RESPECT TO THE SURFACES OF SAID REFRACTORY GRAINS, FORMING THE BODY MIX INTO THE DESIRED SHAPED OF THE ARTICLE, AND FIRING THE ARTICLE TO FUSE SAID FRIT ON THE SURFACES OF SAID REFRACTORY GRAINS.