초록 ▼

A method for forming metallized coatings on ceramics for high-temperature uses above about 630°C. comprising the steps of: preparing a metallizing composition of mixed ingredients of differing sizes, proportioning the differing sizes to have nonsegregating qualities when applied onto the ceramics, c

A method for forming metallized coatings on ceramics for high-temperature uses above about 630°C. comprising the steps of: preparing a metallizing composition of mixed ingredients of differing sizes, proportioning the differing sizes to have nonsegregating qualities when applied onto the ceramics, coating the metallizing composition on the ceramics; and heating to form the desired metallized layer.

대표청구항 ▼

A method for coating a ceramic with a strong, adherent, substantially defect-free, and thermomechanically shock resistant metallized layer, said layer in its solid form being practically useful at temperatures over about 630°C., comprising: selecting a ceramic metallizing composition having a plural

A method for coating a ceramic with a strong, adherent, substantially defect-free, and thermomechanically shock resistant metallized layer, said layer in its solid form being practically useful at temperatures over about 630°C., comprising: selecting a ceramic metallizing composition having a plurality of mixed powdered metallizing ingredients of differing sizes, said composition when molten causing reactions between the ingredients and also with the ceramic to form the metallized layer thereon; preparing the composition by proportioning the differing sizes of the mixed ingredients to have gravitationally substantially nonsegregating qualities when applied onto said ceramic; coating onto a selected surface of the ceramic a layer of the metallizing composition, heating the coated ceramic surface to a temperature at which the metallizing composition melts to cause said reactions between the ingredients and with the ceramic thereby achieving ceramic metallization; and keeping the composition molten for a sufficiently long time to thereby form on the ceramic by liquid diffusion the strong, adherent, substantially defect-free, and thermomechanically shock resistant metallized layer including a controlled interfacial region of substantial thickness whose microstructure is substantially free of voids, inclusions, and microcracks.