A method of fabricating a two-component blade for a gas turbine engine, the method including in succession: obtaining a blade profile made of ceramic material having a hole passing right through the blade profile in its length direction so as to form a longitudinal channel opening out into a top cavity; positioning and maintaining the blade profile in a mold so as to form a bottom cavity communicating with the channel of the blade profile; casting molten metal into the blade profile so as to fill the top and bottom cavities and the channel interconnecting them; and cooling the metal so that the shrinkage of the metal cooled in the top and bottom cavities leads to the ceramic of the blade profile being subjected to compression prestress.

Provided herein are a saltcore for casting with aluminum and a manufacturing method thereof, and more particularly, a saltcore and a manufacturing method thereof capable of reducing shrinkage while satisfying strength during die-casting by including at least one cation of K.sup.+, Na.sup.+ and Mg.sup.2+ and at least one anion of Cl.sup. and CO.sub.3.sup.2, wherein a saltcore for casting with aluminum may include at least one cation of K.sup.+, Na.sup.+ and Mg.sup.2+ and at least one anion of Cl.sup. and CO.sub.3.sup.2.

Provided herein are a saltcore for casting with aluminum and a manufacturing method thereof, and more particularly, a saltcore and a manufacturing method thereof capable of reducing shrinkage while satisfying strength during die-casting by including at least one cation of K.sup.+, Na.sup.+ and Mg.sup.2+ and at least one anion of Cl.sup. and CO.sub.3.sup.2, wherein a saltcore for casting with aluminum may include at least one cation of K.sup.+, Na.sup.+ and Mg.sup.2+ and at least one anion of Cl.sup. and CO.sub.3.sup.2.

The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions, intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

The disclosure relates generally to mold compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to mold compositions, intrinsic facecoat compositions, and methods for casting titanium-containing articles, and the titanium-containing articles so molded.

Inorganic coated sand in a dry state having refractory aggregate; and an inorganic binder layer formed on a surface of the refractory aggregate, in which the inorganic binder layer contains a metasilicate hydrate.

Various embodiments of a slurry composition for investment casting and a method of forming such composition are disclosed. The slurry composition can include a refractory material, a binder, a solvent, and a thixotropic agent that includes fibrillated fibers. The slurry composition can also include a filler that includes glass bubbles.

A mold for casting a titanium-containing article includes calcium aluminate and silicon carbide, and the silicon carbide is graded in the mold such that it is in different portions of the mold in different amounts, with the highest concentration of silicon carbide being located between a bulk of the mold and a surface of the mold that opens to a mold cavity.

A mold for casting a titanium-containing article includes calcium aluminate and silicon carbide, and the silicon carbide is graded in the mold such that it is in different portions of the mold in different amounts, with the highest concentration of silicon carbide being located between a bulk of the mold and a surface of the mold that opens to a mold cavity.

What is described is the use of a particulate material comprising, as its sole constituent or as one of multiple constituents, a particulate synthetic amorphous silicon dioxide having a particle size distribution with a median in the range from 0.1 to 0.4 ?m, determined by means of laser scattering, as additive for a molding material mixture at least comprising: a refractory mold base material having an AFS grain fineness number in the range from 30 to 100, particulate amorphous silicon dioxide having a particle size distribution with a median in the range from 0.7 to 1.5 ?m, determined by means of laser scattering, and water glass, for increasing the moisture resistance of a molding producible by hot curing of the molding material mixture. Also described are corresponding processes, mixtures and kits.