Abstract: Shot-peening powder that has ceramic particles. The powder having more than 95% by mass of beads. The beads having a median size D50 greater than 50 ?m and less than 1200 ?m, and having a value (D90?D10)/D50, or “S”, such that S??0.126·ln(D50)+0.980.

Abstract: Shot-peening method. Projecting a powder onto a surface. The powder includes sintered particles, more than 95 wt % of the particles are beads. The powder has, in wt % based on the oxides: —ZrO2 partially stabilized with CeO2 and Y2O3: balance to 100%, CeO2 and Y2O3 present, in mol % according to the sum of ZrO2, CeO2 and Y2O3, CeO2: 2.5-11 mol % and Y2O3: 0.5-2 mol %, —Al2O3; 3-50%—additive chosen from CaO, manganese oxides, ZnO, praseodymium oxides, SrO, copper oxides, 0.2-6% Nd2O3, BaO, iron oxides, and mixtures thereof: CaO being less than 2%, —elements other than ZrO2, CeO2, Y2O3, Al2O3, CaO, manganese oxides, ZnO, praseodymium oxides, ?5% SrO, copper oxides, Nd2O3, BaO, and iron oxides: manganese oxides, praseodymium oxides, copper oxides and iron oxides being expressed as MnO, Pr6O11, CuO and Fe2O3, respectively, and a relative density greater than 95%.

Abstract: Shot-peening powder that has ceramic particles. The powder having more than 95% by mass of beads. The beads having a median size D50 greater than 50 ?m and less than 1200 ?m, and having a value (D90?D10)/D50, or “S”, such that S??0.126·ln(D50)+0.980.

Abstract: A process for modifying the appearance of a surface is provided. The process includes a stage of spraying particles exhibiting a maximum size of less than or equal to 500 ?m. The sprayed particles exhibit a relative density of greater than 90%, more than 5% and less than 80% by volume of the sprayed particles being particles exhibiting a salient sharp edge. The salient sharp edge is referred to as “notching particles”.

Abstract: A process for modifying the appearance of a surface is provided. The process includes a stage of spraying particles exhibiting a maximum size of less than or equal to 500 ?m. The sprayed particles exhibit a relative density of greater than 90%, more than 5% and less than 80% by volume of the said sprayed particles being particles exhibiting a salient sharp edge. The salient sharp edge is referred to as “notching particles”.

Abstract: The invention relates to a nuclear fuel cladding totally or partially made of a composite material with a ceramic matrix containing silicon carbide (SiC) fibers as a matrix reinforcement and an interphase layer provided between the matrix and the fibers, the matrix including silicon carbide as well as at least one of the following additional carbides: titanium carbide (TiC), zirconium carbide (Zrc), and ternary titanium silicon carbide (Ti3SiC2). When irradiated and at temperatures of between 800° C. and 1200° C., said cladding can mechanically maintain the nuclear fuel within the cladding while enabling optimal thermal-energy transfer towards the coolant. The invention also relates to a method for making the nuclear fuel cladding.

Abstract: The invention relates to a nuclear fuel cladding totally or partially made of a composite material with a ceramic matrix containing silicon carbide (SiC) fibers as a matrix reinforcement and an interphase layer provided between said matrix and said fibers, the matrix including at least one carbide selected from titanium carbide (TiC), zirconium carbide (ZrC), or ternary titanium silicon carbide (Ti3SiC2). When irradiated and at temperatures of between 800° C. and 1200° C., said cladding can mechanically maintain the nuclear fuel within the cladding while enabling optimal thermal-energy transfer towards the coolant. The invention also relates to a method for making the nuclear fuel cladding.