Abstract:
A cutting tool (10) and a method of making a cutting tool are provided. The cutting tool (10) comprises a sintered superabrasive tip (12) with a plurality of superhard particles of polycrystalline boron nitride, a tool body (14) and a non-brazing material (24). The non- brazing material (24) fills a gap (15, 16) between the superabrasive tip (12) and the tool body (14). The method of making a cutting tool comprises steps of providing a superabrasive tip (12); providing a tool body (14); filling a gap (15, 16) between the superabrasive tip (12) and the tool body (14) with a non-brazing material (24); and depositing a first coating (22) to the non-brazing material (24).
Abstract:
A method including applying layers of multiple constituents where the constituents are capable of producing a non-equilibrium condition on the contacting surfaces of a ceramic matrix composite component and a gas turbine engine component where one outer coating includes a first constituent and the other outer coating includes a second constituent; forming a component assembly with the ceramic matrix composite component coupled to the gas turbine engine component with contact between the outer coatings; adding an energy to facilitate an equilibrium reaction between the first constituent of the first outer coating and the second constituent of the second outer coating; and as a result of adding the energy, forming a bond structure in the component assembly with a product of the equilibrium reaction where the bond structure affixes the ceramic matrix composite component to the gas turbine engine component between the first constituent and the second constituent.
Abstract:
L'invention a trait à une pièce tubulaire multicouche (1) comprenant une couche métallique formant un corps tubulaire métallique (3) et deux couches en matériau composite à matrice céramique, recouvrant le corps tubulaire métallique, dans laquelle une des deux couches en matériau composite à matrice céramique recouvre la surface interne du corps tubulaire métallique pour former un corps tubulaire interne (4), tandis que l'autre des deux couches en matériau composite à matrice céramique recouvre la surface externe du corps tubulaire métallique pour former un corps tubulaire externe (2), le corps tubulaire métallique se trouvant ainsi pris en sandwich entre les corps tubulaires interne et externe. Le corps tubulaire métallique est en métal ou en alliage de métaux. Enfin, le corps tubulaire métallique a une épaisseur moyenne inférieure aux épaisseurs moyennes des corps tubulaires interne et externe. Une telle pièce peut notamment servir à réaliser des gaines de combustible nucléaire.
Abstract:
A multi-layered cladding material including a ceramic matrix composite and a metallic material, and a tube formed from the cladding material. The metallic material forms an inner liner of the tube and enables hermetic sealing of thereof. The metallic material at ends of the tube may be exposed and have an increased thickness enabling end cap welding. The metallic material may, optionally, be formed to infiltrate voids in the ceramic matrix composite, the ceramic matrix composite encapsulated by the metallic material. The ceramic matrix composite includes a fiber reinforcement and provides increased mechanical strength, stiffness, thermal shock resistance and high temperature load capacity to the metallic material of the inner liner. The tube may be used as a containment vessel for nuclear fuel used in a nuclear power plant or other reactor. Methods for forming the tube comprising the ceramic matrix composite and the metallic material are also disclosed.