Provided are a molding step (A) of preparing an alumina molded body 11 from a molding raw material which contains an alumina raw material powder having an average particle size of 2 m to 5 m and a molding additive, and a sintering step (B) of preparing an alumina molded body 12, which becomes a spark plug insulator 1, by sintering the alumina molded body 11. At the sintering step (B), the alumina molded body 11 is conveyed to a continuous furnace 100 provided with a heating zone Z1 which is heated to 700 C. to 1600 C. by a heating means 401, followed by introducing oxygen gas to control the heating zone Z1 to have a high oxygen atmosphere with an oxygen concentration exceeding 20 mol %.

An alumina having a multimodal particle size distribution wherein at least one of the particle sizes giving local maximum values in the particle size distribution is less than 10 m, and wherein the alumina comprises 1 to 5 wt % of at least one of La and Ba.

The present invention pertains to a protective fluid for alumina, a protection method, and a production method for semiconductor substrate having an alumina layer using same. This alumina protective fluid is characterized by: containing 0.0001%-20% by mass of an alkali earth metal compound; and the alkali earth metal being at least one selected from the group consisting of beryllium, magnesium, strontium, and barium. As a result of the present invention, alumina corrosion can be suppressed during the production process for semiconductor circuits.

A ceramic product includes a transparent ceramic panel having a non-planar geometry including a bend having a slippage plane, an increased haze, a non-uniform thickness, or a combination thereof. A method includes providing a transparent ceramic panel, heating the panel, bending the panel to conform to a non-planar geometry.

The rate of release of a well treatment agent into a well may be controlled by introducing into the well a screen containing a well treatment composite having a well treatment agent and a support for the well treatment agent. The diameter of the substrate is less than the diameter of the opening of the screen of the screen assembly. Over time, the well treatment agent is released from the substrate and passes from the interior of the screen into the well.

Preparation of a catalyst comprising an oxide matrix and an active phase comprising nickel: a calcined porous aluminium oxide is prepared; the calcined porous aluminium oxide obtained is kneaded with a solution resulting from mixing one or more solution(s) of at least one nickel precursor and at least one solution of at least one organic compound which has at least one carboxylic acid function, or at least one alcohol function, or at least one ester function, or at least one amine function, or at least one amide function, in order to obtain a paste, wherein the mole ratio of said organic compound to the nickel element is between 0.01 and 5.0 mol/mol; the paste obtained is shaped; the shaped paste obtained is dried at a temperature of less than 250 C. in order to obtain a dried catalyst.

A ceramic product includes a transparent ceramic panel having a non-planar geometry including a bend having a slippage plane, an increased haze, a non-uniform thickness, or a combination thereof. A method includes providing a transparent ceramic panel, heating the panel, bending the panel to conform to a non-planar geometry.

A method for producing an oriented sintered body according to the present invention includes the steps of: (a) preparing a multilayer body, the multilayer body including a layer including a fine raw-material powder and a layer including a plate-like raw-material powder which are alternately stacked each other, particles of the plate-like raw-material powder being arranged such that surfaces of the particles of the plate-like raw-material powder extend along a surface of the layer including a fine raw-material powder; and (b) sintering the multilayer body.

A battery includes: a positive electrode; a negative electrode; and an electrolyte. At least one of the electrolyte and the negative electrode contains an aluminum hydroxide, at least a part of a surface of the aluminum hydroxide being modified.

Disclosed herein are aluminum oxide aerogels and methods of making and use thereof. The methods of making the aluminum oxide aerogel include contacting a solid comprising aluminum with a Ga-based liquid alloy to dissolve at least a portion of the aluminum from the solid, thereby forming an aluminum-alloy mixture; and contacting the aluminum-alloy mixture with a fluid comprising water, thereby forming the aluminum oxide aerogel. In some examples, the methods can further comprise capturing and converting carbon dioxide to a syngas comprising carbon monoxide and hydrogen.