Patent ID: 8858745

Claim:
A method of bonding together portions of a ceramic component where the component composition is resistant to fluorine-comprising corrosive etchant plasmas used in a semiconductor industry or MEMS industry to produce patterned structures, said method comprising: contacting an area of said portions of a ceramic component to be bonded together with a bonding agent which comprises a metal fluoride selected from the group consisting of YF 3 , NdF 3 , AlF 3 , ZrF 4 , SmF 3 , CeF 3 , DyF 3 , GdF 3 , InF 3 , LaF 3 , ThF 4 , TmF 3 ,YbF 3 , BaF 2 , CaF 2 , and combinations thereof, where said bonding agent , when co-fired with said portions of said ceramic component, reacts to form an oxyfluoride glass-ceramic comprising transition area between said portions of said ceramic component and said bonding agent, which transition area includes from at least 0.1 volume % amorphous phase up to about 50 volume % amorphous phase and ,wherein said oxyfluoride glass-ceramic comprising transition area exhibits, upon exposure to a CF 4 —CHF 3 etchant plasma, an erosion rate which is lower than an erosion rate of said portions of ceramic component.