JP2012020928A5

JP2012020928A5 -

Info

Publication number: JP2012020928A5
Application number: JP2011182400A
Authority: JP
Filing date: 2011-08-24
Publication date: 2012-03-15
Anticipated expiration: 2028-12-11

Claims

A step of firing a molded body of a raw material mixture containing an aluminum source powder, a titanium source powder , a magnesium source powder and a silicon source powder ,
The titanium source powder has the following formulas (1) and (2) on a volume basis in a particle size distribution measured by a laser diffraction method :
(V _0.5-3 + V _15-75 ) / V _total ≧ 0.7 (1)
1/2 ≦ V _15-75 / V _0.5-3 ≦ _3/2 (2)
(In the formula, V _0.5-3 is the cumulative frequency of particle size _0.5-3 μm, V _15-75 is the cumulative frequency of particle size _15-75 μm, and V _total is the cumulative frequency of particle size 0.1 μm or more.)
The filling,
The method for producing an aluminum titanate-based fired body, wherein the silicon source powder is a powder made of glass frit or a mixture of glass frit and feldspar .

2. The method for producing an aluminum titanate-based fired body according to claim 1, wherein a volume-based cumulative particle size equivalent to 50% of the silicon source powder is 0.5 to 30 μm.

Al in the raw material mixture ₂₂ O _3Three Said aluminum source powder and TiO in terms of conversion ₂₂ The molar ratio of the titanium source powder in terms of conversion is in the range of 35:65 to 45:55, and Al ₂₂ O _3Three Said aluminum source powder and TiO in terms of conversion ₂₂ 3. The titanic acid according to claim 1, wherein an amount of the magnesium source powder in terms of MgO is within a range of 0.03 to 0.15 in terms of a molar ratio with respect to a total amount of the titanium source powder in terms of conversion. A method for producing an aluminum-based fired body.

The method for producing an aluminum titanate-based fired body according to any one of claims 1 to 3, wherein a volume-based cumulative particle size equivalent to 50% of the aluminum source powder is 10 to 50 µm.

SiO in the raw material mixture ₂₂ The amount of the silicon source powder in terms of conversion is Al ₂₂ O _3Three Said aluminum source powder and TiO in terms of conversion ₂₂ It is 0.1-10 mass parts with respect to 100 mass parts of total amounts with the said titanium source powder in conversion, The manufacturing method of the aluminum titanate type sintered body in any one of Claims 1-4.

The method for producing an aluminum titanate-based fired body according to any one of claims 1 to 5, wherein the formed body has a honeycomb shape.

The method for producing an aluminum titanate-based fired body according to any one of claims 1 to 6, wherein the firing temperature is 1300 to 1650 ° C, and the firing time is 10 minutes to 24 hours.