Self-healing SiC/ZrSi2-MoSi2 coating material and preparation method thereof
A coating material and self-healing technology, applied in the field of SiC/ZrSi2-MoSi2 composite ceramic coating, self-healing SiC/ZrSi2-MoSi2 coating material and preparation, can solve the problem of large glass phase, limited content and influence Coating protection effect, etc.
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Embodiment example 1
[0036] Step 1: Cut the C / C Composite into 10×10×10mm 3 The small pieces were ultrasonically cleaned with absolute ethanol for 1 h, and then dried in a blast drying oven at 80 °C for 2 h for later use.
[0037] Step 2: Prepare a SiC transition layer on the surface of the C / C composite material, the specific process is:
[0038] 1) Prepare the powder required for the embedding method: weigh 65g of silicon powder (300 mesh), 20g of carbon powder (300 mesh) and 15g of alumina powder (300 mesh) respectively, and pour in zirconia at the same time In a ball mill tank, mix at a speed of 200r / min for 2 hours to obtain a uniformly mixed embedding raw material powder;
[0039] 2) Embedding infiltration: Lay several layers of graphite paper inside the graphite crucible, and then embed the C / C composite material sample obtained in step 1 into the mixed embedding raw materials in the crucible. Put the prepared crucible in a high-temperature graphitization heat treatment furnace for 2 hour...
Embodiment example 2
[0045] Step 1: Cut the C / C Composite into 10×10×10mm 3 The small pieces were ultrasonically cleaned with absolute ethanol for 1 h, and then dried in a blast drying oven at 80 °C for 2 h for later use.
[0046] Step 2: Prepare a SiC transition layer on the surface of the C / C composite material, the specific process is:
[0047] 1) Prepare the powder required for the embedding method: weigh silicon powder (300 mesh) with a mass fraction of 80, carbon powder (300 mesh) with a mass fraction of 10 and alumina powder (300 mesh) with a mass fraction of 10g, and pour in zirconia at the same time In a ball mill tank, mix at a speed of 200r / min for 2 hours to obtain a uniformly mixed embedding raw material powder;
[0048] 2) Embedding infiltration: Lay two layers of graphite paper inside the graphite crucible, and then embed the C / C composite material sample obtained in step 1 into the mixed embedding raw materials in the crucible. The prepared crucible was placed in a high-temperatu...
Embodiment example 3
[0054] Step 1: Cut the C / C Composite into 10×10×10mm 3 The small pieces were ultrasonically cleaned with absolute ethanol for 1 h, and then dried in a blast drying oven at 80 °C for 2 h for later use.
[0055] Step 2: Prepare a SiC transition layer on the surface of the C / C composite material, the specific process is:
[0056] 1) Prepare the powder required for the embedding method: weigh 70g of silicon powder (300 mesh), 20g of carbon powder (300 mesh) and 10g of alumina powder (300 mesh) respectively, and pour in zirconia at the same time In a ball mill tank, mix at a speed of 200r / min for 2 hours to obtain a uniformly mixed embedding raw material powder;
[0057] 2) Embedding infiltration: Lay two layers of graphite paper inside the graphite crucible, and then embed the C / C composite material sample obtained in step 1 into the mixed embedding raw materials in the crucible. The prepared crucible was placed in a high-temperature graphitization heat treatment furnace for 2 h...
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