Method for producing aluminum titanate sintered object

Details Method for producing aluminum titanate sintered object Method for producing aluminum titanate sintered object

2006-03-14

2006-03-14

Vincent, Sean (Department: 1731)

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Involving specified composition of heating atmosphere, other...

C264S681000, C501S127000

Reexamination Certificate

active

07011788

ABSTRACT:
The present invention provides a process for preparing an aluminum-titanate-based sintered body comprising the step of firing, at 1250 to 1700° C., a formed product prepared from a raw material mixture containing 100 parts by weight of a mixture of TiO2and Al2O3in a weight ratio of TiO2:Al2O3=40:60 to 60:40, and 1 to 15 parts by weight of an alkali feldspar represented by the formula:(NaxK1-x)AlSi3O8wherein 0≦x≦1.According to the process of the present invention, it is possible to obtain an aluminum-titanate-based sintered body in which inherent properties of an aluminum titanate, i.e., a low coefficient of thermal expansion and high corrosion resistance are maintained, the mechanical strength thereof is improved, and which can be stably used even under high temperature conditions.

REFERENCES:
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Y.X. Huang et al.; “Effect Of Excess SiO2On The Reaction Sintering Of Aluminum Titanate—25 Vol% Mullite Composites”; Ceramics International 24 (1998) pp. 223-228.
Kunio Yoshida; “Kouzan-Butsu No Chishiki To Torihihiki”, Zaidan Hojin Tsusho Sangyo Chousa-kai; Mar. 7, 1992; pp. 392 and 429.

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