PREPREG FOR CERAMIC MATRIX COMPOSITE

    公开(公告)号:US20230078422A1

    公开(公告)日:2023-03-16

    申请号:US17795201

    申请日:2021-01-26

    摘要: A prepreg including a support with, for more than 90% of the weight thereof, of ceramic fibers, and a thermoreversible liquefiable gel covering, at least in part, at least one portion of the ceramic fibers. The liquefiable gel including: 20% to 60% of ceramic particles and 0% to 10% of metal particles, both as percentage by volume based on the volume of the liquefiable gel; 0.2% to 10% of a thermoreversible hydrocolloid and 0% to 7% of one or more other constituents, both as a percentage by weight on the basis of the total weight of the ceramic particles and metal particles; the balance to 100% being water. It being possible for the ceramic particles and the metal particles to be replaced, partially or completely, by precursors of ceramic particles and of metal particles, respectively, capable of forming, by heat treatment above 200° C., ceramic particles and metal particles, respectively.

    WEAR DETECTOR FOR GLASS FURNACE
    7.
    发明申请

    公开(公告)号:US20210308902A1

    公开(公告)日:2021-10-07

    申请号:US17263792

    申请日:2019-07-26

    摘要: A method for producing a glass furnace, including a refractory portion, a waveguide with a measurement portion extending into the refractory portion and an interrogator connected to an input of the waveguide to inject an interrogation signal. The measurement portion incorporating a sensor to send a response signal to the interrogator in response to the injection. The interrogator analyzing the response signal and sending a message. Arranging, inside a mold, a temporary part configured to leave space for a compartment for the measurement portion. Preparing a starting feedstock and introducing the starting feedstock into the mold such that the part is embedded therein to obtain a preform. Hardening the preform to form the refractory portion. Removing the temporary part to make the compartment. Assembling the refractory portion with other constituent elements and introducing the measurement portion into the compartment and connecting the interrogator to the input of the waveguide.

    POWDER FOR A THERMAL BARRIER
    10.
    发明申请

    公开(公告)号:US20210061716A1

    公开(公告)日:2021-03-04

    申请号:US16965249

    申请日:2019-01-31

    摘要: A powder of fused particles. The powder includes, in percentage by weight based on the oxides, more than 98% of a stabilized oxide selected from stabilized zirconium oxides, stabilized hafnium oxides and mixtures thereof, the stabilized oxide being stabilized by a stabilizer selected from the oxides of Y, Ca, Ce, Sc, Mg, In, La, Gd, Nd, Sm, Dy, Er, Yb, Eu, Pr, and Ta, called “stabilizing oxides”, and the mixtures of these stabilizing oxides. The powder has: a median particle size D50 under 15 μm, a 90th percentile of the particle sizes, D90, under 30 μm, and a size dispersion index (D90−D10)/D10 below 2, and a relative density above 90%. The percentiles Dn of the powder are the particle sizes corresponding to the percentages, by number, of n %, on the cumulative distribution curve of the powder particle size and the particle sizes are classified by increasing order.