Abstract: An indium oxide-based particle is provided. The indium oxide-based particle has a mono-dispersive and spherical non-crystalline structure (spherical morphology with amorphous phase). The diameter of particle is ranged between 0.10 ?m and 0.70 ?m, and the content of an indium oxide is ranged between 10.0 percent by mass and 99.9 percent by mass. The indium oxide-based particle is generated by the precursor with indium ion reacting with alpha hydroxyl acid in an aqueous solution with alkali-modifier additive at a constant temperature. The indium-oxide based particle can be further calcinated as a crystalline indium oxide particle.

Abstract: This invention discloses a kind of cerium-based oxide fiber and its fabricating method. The cerium-based hydrate fiber can be synthesized by aging under the boiling point of water for 10 hours to 50 hours by the addition of a chemical modifier. The fibers show a diameter of submicron to micron size, and the aspect ratio is greater than 100. The hydrate fibers can transform to oxide fiber after calcination at high temperature.

Abstract: This invention relates to the preparation of a copolymer which is used as a dispersing agent for titanate-based ceramic colloids. This copolymer has the following structure: Wherein R1 is H, NH4, alkali metals; R2 is H, NH4, alkali metals; R3 is H, NH4, alkali metals; a is an integer from 1 to 2000; b is an integer from 1 to 5000; and c is an integer from 1 to 1000; n is an integer from 1 to 500.

Abstract: An indium oxide-based particle is provided. The indium oxide-based particle has a mono-dispersive and spherical non-crystalline structure (spherical morphology with amorphous phase). The diameter of particle is ranged between 0.10 ?m and 0.70 ?m, and the content of an indium oxide is ranged between 10.0 percent by mass and 99.9 percent by mass. The indium oxide-based particle is generated by the precursor with indium ion reacting with alpha hydroxyl acid in an aqueous solution with alkali-modifier additive at a constant temperature. The indium-oxide based particle can be further calcinated as a crystalline indium oxide particle.

Abstract: A method for preparing a ceramic powder suspension is disclosed. A dispersant having a following structural formula is provided: wherein D is H or COOR1; R1 is a hydrogen atom, or an alkyl group, a cyclic aliphatic group, an aryl group, having 1 to 10 carbon atoms, or a cationic salt group; R2 is an alkyl group having 1 to 10 carbon atoms, a cyclic aliphatic having 1 to 10 carbon atoms or an aryl group having 1 to 10 carbon atoms; R3 is a hydrogen atom or a methyl group; Z is an oxygen atom or an NH group; A is —COO —SO3 or an acid form; a is an integer between 1 to 5000; and p and q are integers between 1 to 10. The dispersant is dissolved in a solvent. Ceramic powder is further added into the solvent with the dispersant.

Abstract: A method for processing a ceramic powder suspension includes providing a dispersant having the following structure: wherein R1 is an H+ ion, an Na+ ion, an NH4+ ion or other cationic group; R2 is an H+ ion, an Na+ ion. an NH4+ ion or other cationic group; m is an integer from 10 to 5000 ; and n is an integer from 10 to 3000 . The dispersant is dissolved in a solvent. Ceramic powder is further added into the solvent with the dispersant.

Abstract: This invention discloses a kind of cerium-based oxide fiber and its fabricating method. The cerium-based hydrate fiber can be synthesized by aging under the boiling point of water for 10 hours to 50 hours by the addition of a chemical modifier. The fibers show a diameter of submicron to micron size, and the aspect ratio is greater than 100. The hydrate fibers can transform to oxide fiber after calcination at high temperature.

Abstract: This invention discloses a coating method to apply a layer of nano-particles adsorbed on submicron ceramic oxide particles, which can prevent the agglomeration of nano-particles by the effects of Brownian motion and van der Waals force. Using this method, nano-sized titania can be uniformly coated on the surface of silica. This method is conducted in an aqueous solution and able to fabricate a coating layer in a controlled thickness between 5 to tens nm. After calcination, the coated particles can be assembled to form a photonic bandgap crystal. This invention also discloses a coating method to apply a uniform nano TiO2-coating layer on the SiO2 photonic bandgap crystals.

Abstract: This invention relates to the preparation of a copolymer which is used as a dispersing agent for titanate-based ceramic colloids. This copolymer has the following structure: Wherein R1 is H, NH4, alkali metals; R2 is H, NH4, alkali metals; R3 is H, NH4, alkali metals; a is an integer from 1 to 2000; b is an integer from 1 to 5000; and c is an integer from 1 to 1000; n is an integer from 1 to 500.

Abstract: A method for preparing a ceramic powder suspension is disclosed. A dispersant having a following structural formula is provided: wherein D is H or COOR1; R1 is a hydrogen atom, or an alkyl group, a cyclic aliphatic group, an aryl group, having 1 to 10 carbon atoms, or a cationic salt group; R2 is an alkyl group having 1 to 10 carbon atoms, a cyclic aliphatic having 1 to 10 carbon atoms or an aryl group having 1 to 10 carbon atoms; R3 is a hydrogen atom or a methyl group; Z is an oxygen atom or an NH group; A is —COO —SO3 or an acid form; a is an integer between 1 to 5000; and p and q are integers between 1 to 10. The dispersant is dissolved in a solvent. Ceramic powder is further added into the solvent with the dispersant.

Abstract: A method for preparing a ceramic powder suspension is disclosed. A dispersant having a following structural formula is provided: wherein D is H or COOR1; R1 is a hydrogen atom, or an alkyl group, a cyclic aliphatic group, an aryl group, having 1 to 10 carbon atoms, or a cationic salt group; R2 is an alkyl group having 1 to 10 carbon atoms, a cyclic aliphatic having 1 to 10 carbon atoms or an aryl group having 1 to 10 carbon atoms; R3 is a hydrogen atom or a methyl group; Z is an oxygen atom or an NH group; A is —COO—SO3 or an acid form; a is an integer between 1 to 5000; and p and q are integers between 1 to 10. The dispersant is dissolved in a solvent. Ceramic powder is further added into the solvent with the dispersant.

Abstract: A method for preparing a ceramic powder suspension is disclosed.

Abstract: A laser remelting process is provided to fabricate a metal article with a thermal-barrier ceramic top coat having improved oxidation resistance and surface properties. The process includes the combination of following two laser remelting treatments which are conducted while the metal substrate is at temperatures above 850.degree. C.: (1) Firstly, remelt a plasma-sprayed zirconia coating which is applied on a metal article by means of a high-power laser. The process step is assigned as a "primary laser remelting" step; (2) coat the treated surface with a thin layer of zirconia powder, then remelt the surface of the article while the metal substrate is preheated. The step is assigned as a "secondary laser remelting" step. The treated articles are well-suited for such applications as turbine blades and engine parts operated at high temperatures and corrosive environment.

Abstract: An aqueous alumina dispersion prepared from high quality, submicrometer alumina powder, suitable for manufacturing fine ceramic products, is disclosed. The sub-micrometer alumina particles have a surface area of 2.5 to 50 m.sup.2 per gram of the alumina particles. There are three components in the dispersion: sub-micrometer alumina particles (10 to 68 percent based on weight of the colloidal dispersion), semicarbazide hydrochloride derivative (0.1 to 5 percent based on the weight of the alumina particles), and water (the balance).

Abstract: Whisker reinforced composites having improved strength and toughness are prepared by a process including densification by essentially pressureless sintering. There is no need to hot press or hot isostatic press to achieve a density of 99+% of theoretical for 10 vol. % whiskers and 93+% for 20 vol. % whiskers. The composites are derived from the desired volume fraction of whiskers, a sintering aid preferably submicron in average size range, and a major portion of a pressureless sinterable matrix material having an average particle size of not more than about 0.5 micron. Yttria-alumina composites are sintered at less than about 1800.degree. C. and for less than about two hours to avoid surface degradation.