Patent ID: 8696841
Filing Date: 2014-04-15
Classification: B32B,C04B,Y10T

Abstract:
1. A method of manufacturing a ceramic bonded body using an unfired ceramic body A, internally formed with a cavity portion or having a bonding material layer formed with a concaved portion, and an unfired ceramic body B bonded to the unfired ceramic body A and then fired to obtain the ceramic bonded body, the method comprising the steps of: preparing the unfired ceramic bodies A and B satisfying the relationship expressed as |X—Y|≦1 where “X” represents a firing contraction ratio (%) of the unfired ceramic body A and “Y” represents a firing contraction ratio (%) of the unfired ceramic body B, each of the unfired ceramic body A and the unfired ceramic body B comprising alumina or zirconia, wherein the firing contraction ratio of the unfired ceramic body A is different from the firing contraction ratio of the unfired ceramic body B; applying a bonding material onto at least one bonding surface of the unfired ceramic bodies A and B in a thickness ranging from 10 to 25 μm; bonding the unfired ceramic bodies A and B after the step of applying the bonding material for preparing a bonded body; firing the bonded body to prepare the ceramic bonded body; and the bonding material containing an inorganic powder, an organic binder and an organic solvent in a composition to satisfy relationships expressed as 0.2≦X—Z<2.6 and 0.2≦Y—Z<2.6 where “Z” represents a firing contraction ratio of the bonding material.