Research on preparation and lamination of cordierite green tapes

Water based tape casting slurry of cordierite with good performances of fluidity and stability was acquired via the research of slurry system.The tapes prepared by the slurry could be sintered at low temperature.Moreover,the compactness is better,the relative density is higher and the dielectric properties are good.Lamination of green tapes was studied mostly.The results showed that the tapes could be laminated well at ambient temperature.Five green tapes could be bonded well at 2.5MPa.However,pores would appear when the layers increased to 10 and the sintering properties would become worse.The sintering properties could be improved with increasing pressure.Compared with thermo-pressure lamination,the pressure and temperature during lamination are lower;with solvent or gluing based lamination,additional additives are not needed.