Patent ID: 7166552

Claim:
A process for producing a sintered body comprising as a basic component aluminum magnesium titanate represented by the composition formula: Mg x Al 2(1−x) Ti (1+x) O 5 wherein the value of x is 0.1≦x<1, the process comprising a step of sintering a formed product from a raw material mixture comprising the ingredients (i) and (ii) below: (i) 100 parts by weight, calculated on an oxide basis, of a mixture comprising a Mg-containing compound, an Al-containing compound and a Ti-containing compound at the same metal component ratio as the metal component ratio of Mg, Al and Ti in the composition formula, (ii) 1–10 parts by weight of an alkali feldspar represented by the composition formula: (Na y K 1−y )AlSi 3 O 8 wherein the value of y is 0≦y≦1.