C04B35/10

Alumina material

Provided is alumina material comprising alumina and zirconium, wherein in a radial distribution function obtained by Fourier-transforming an extended X-ray absorption fine structure (EXAFS) spectrum of a K absorption edge of the zirconium in the alumina material, the value of I.sub.B/I.sub.A is 0.5 or less where I.sub.A is a maximum intensity among the intensities of peaks present at 0.1 nm to 0.2 nm, and I.sub.B is a maximum intensity among the intensities of peaks present at 0.28 nm to 0.35 nm.

Alumina material

Provided is alumina material comprising alumina and zirconium, wherein in a radial distribution function obtained by Fourier-transforming an extended X-ray absorption fine structure (EXAFS) spectrum of a K absorption edge of the zirconium in the alumina material, the value of I.sub.B/I.sub.A is 0.5 or less where I.sub.A is a maximum intensity among the intensities of peaks present at 0.1 nm to 0.2 nm, and I.sub.B is a maximum intensity among the intensities of peaks present at 0.28 nm to 0.35 nm.

Silicon compositions containing boron and methods of forming the same
11578008 · 2023-02-14 · ·

A composition is generally provided that includes a silicon-containing material (e.g., silicon metal and/or a silicide) and a boron-doped refractory compound, such as about 0.001% to about 85% by volume of the boron-doped refractory compound (e.g., about 1% to about 60% by volume). In one embodiment, a bond coating on a surface of a ceramic component is generally provided with the bond coating including such a composition, with the silicon-containing material is silicon metal.

Silicon compositions containing boron and methods of forming the same
11578008 · 2023-02-14 · ·

A composition is generally provided that includes a silicon-containing material (e.g., silicon metal and/or a silicide) and a boron-doped refractory compound, such as about 0.001% to about 85% by volume of the boron-doped refractory compound (e.g., about 1% to about 60% by volume). In one embodiment, a bond coating on a surface of a ceramic component is generally provided with the bond coating including such a composition, with the silicon-containing material is silicon metal.

Plasma spray coating design using phase and stress control

An article includes a body having a plasma-sprayed ceramic coating on a surface thereof. The body can be formed of at one least one of the following materials: Al, Al.sub.2O.sub.3, AlN, Y.sub.2O.sub.3, YSZ, or SiC. The plasma-sprayed ceramic coating can include at least one of Y.sub.2O.sub.3, Y.sub.4Al.sub.2O.sub.9, Y.sub.3Al.sub.5O.sub.12 or a solid-solution of Y.sub.2O.sub.3 mixed with at least one of ZrO.sub.2, Al.sub.2O.sub.3, HfO.sub.2, Er.sub.2O.sub.3, Nd.sub.2O.sub.3, Nb.sub.2O.sub.5, CeO.sub.2, Sm.sub.2O.sub.3 or Yb.sub.2O.sub.3. The plasma-sprayed ceramic coating can further include splats.

Plasma spray coating design using phase and stress control

An article includes a body having a plasma-sprayed ceramic coating on a surface thereof. The body can be formed of at one least one of the following materials: Al, Al.sub.2O.sub.3, AlN, Y.sub.2O.sub.3, YSZ, or SiC. The plasma-sprayed ceramic coating can include at least one of Y.sub.2O.sub.3, Y.sub.4Al.sub.2O.sub.9, Y.sub.3Al.sub.5O.sub.12 or a solid-solution of Y.sub.2O.sub.3 mixed with at least one of ZrO.sub.2, Al.sub.2O.sub.3, HfO.sub.2, Er.sub.2O.sub.3, Nd.sub.2O.sub.3, Nb.sub.2O.sub.5, CeO.sub.2, Sm.sub.2O.sub.3 or Yb.sub.2O.sub.3. The plasma-sprayed ceramic coating can further include splats.

Manufacturing system, process, article, and furnace

A manufacturing system includes a tape advancing through the manufacturing system and a station of the manufacturing system. The tape includes a first portion having grains of an inorganic material bound by an organic binder. The station of the manufacturing system receives the first portion of the tape and prepares the tape for sintering by chemically changing the organic binder and/or removing the organic binder from the first portion of the tape, leaving the grains of the inorganic material, to form a second portion of the tape and, at least in part, prepare the tape for sintering.

Lithium stuffed garnet setter plates for solid electrolyte fabrication

Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone to diffuse out of the solid electrolyte.

Lithium stuffed garnet setter plates for solid electrolyte fabrication

Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone to diffuse out of the solid electrolyte.

METHOD OF MAKING CERAMIC SHAPED ABRASIVE PARTICLES, SOL-GEL COMPOSITION, AND CERAMIC SHAPED ABRASIVE PARTICLES
20180010026 · 2018-01-11 ·

A method includes: providing a mold having a plurality of mold cavities, wherein each mold cavity is bounded by a plurality of faces joined along common edges; filling at least some of the mold cavities with a sol-gel composition that includes a release agent dispersed therein; at least partially drying the sol-gel composition thereby forming shaped ceramic precursor particles; calcining at least a portion of the shaped ceramic precursor particles to provide calcined shaped ceramic precursor particles; and sintering at least a portion of the calcined shaped ceramic precursor particles to provide ceramic shaped abrasive particles. A sol-gel composition, shaped ceramic precursor particles, and ceramic shaped abrasive particles associated with practice of the method are also disclosed.