The Experts below are selected from a list of 8688 Experts worldwide ranked by ideXlab platform

Seong Min Hong - One of the best experts on this subject based on the ideXlab platform.

  • characteristics of zrc barrier coating on sic coated carbon carbon composite developed by thermal spray process
    Materials, 2019
    Co-Authors: Boram Kang, Ho Seok Kim, Hyung Ik Lee, Jung Min Lee, Seong Min Hong
    Abstract:

    A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic Flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During Flame Exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation.

Boram Kang - One of the best experts on this subject based on the ideXlab platform.

  • characteristics of zrc barrier coating on sic coated carbon carbon composite developed by thermal spray process
    Materials, 2019
    Co-Authors: Boram Kang, Ho Seok Kim, Hyung Ik Lee, Jung Min Lee, Seong Min Hong
    Abstract:

    A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic Flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During Flame Exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation.

Jean-françois Silvain - One of the best experts on this subject based on the ideXlab platform.

  • Spontaneous formation of multilayer refractory carbide coatings in a molten salt media
    Proceedings of the National Academy of Sciences of the United States of America, 2021
    Co-Authors: Loic Constantin, Lisha Fan, Mathilde Pouey, Jérôme Roger, Bai Cui, Jean-françois Silvain
    Abstract:

    Refractory materials hold great promise to develop functional multilayer coating for extreme environments and temperature applications but require high temperature and complex synthesis to overcome their strong atomic bonding and form a multilayer structure. Here, a spontaneous reaction producing sophisticated multilayer refractory carbide coatings on carbon fiber (CF) is reported. This approach utilizes a relatively low-temperature (950 °C) molten-salt process for forming refractory carbides. The reaction of titanium (Ti), chromium (Cr), and CF yields a complex, high-quality multilayer carbide coating composed of 1) Cr carbide (Cr 3 C 2 ), 2) Ti carbide, and 3) Cr 3 C 2 layers. The layered sequence arises from a difference in metal dissolutions, reactions, and diffusion rates in the salt media. The multilayer-coated CFs act as a permeable oxidation barrier with no crystalline degradation of the CFs after extreme temperature (1,200 °C) and environment (oxyacetylene Flame) Exposure. The synthesis of high-quality multilayer refractory coating in a fast, efficient, easy, and clean manner may answer the need for industrial applications that develop cheap and reliable extreme environment protection barriers.

Ho Seok Kim - One of the best experts on this subject based on the ideXlab platform.

  • characteristics of zrc barrier coating on sic coated carbon carbon composite developed by thermal spray process
    Materials, 2019
    Co-Authors: Boram Kang, Ho Seok Kim, Hyung Ik Lee, Jung Min Lee, Seong Min Hong
    Abstract:

    A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic Flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During Flame Exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation.

  • Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process
    MDPI AG, 2019
    Co-Authors: O Ram Kang, Ho Seok Kim, Jung Mi Lee, Hyung Ik Lee, Seong Mi Hong
    Abstract:

    A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic Flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During Flame Exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation

Hyung Ik Lee - One of the best experts on this subject based on the ideXlab platform.

  • characteristics of zrc barrier coating on sic coated carbon carbon composite developed by thermal spray process
    Materials, 2019
    Co-Authors: Boram Kang, Ho Seok Kim, Hyung Ik Lee, Jung Min Lee, Seong Min Hong
    Abstract:

    A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic Flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During Flame Exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation.

  • Characteristics of ZrC Barrier Coating on SiC-Coated Carbon/Carbon Composite Developed by Thermal Spray Process
    MDPI AG, 2019
    Co-Authors: O Ram Kang, Ho Seok Kim, Jung Mi Lee, Hyung Ik Lee, Seong Mi Hong
    Abstract:

    A thick ZrC layer was successfully coated on top of a SiC buffer layer on carbon/carbon (C/C) composites by vacuum plasma spray (VPS) technology to improve the ablation resistance of the C/C composites. An optimal ZrC coating condition was determined by controlling the discharge current. The ZrC layers were more than 70 µm thick and were rapidly coated under all spraying conditions. The ablation resistance and the oxidation resistance of the coated layer were evaluated in supersonic Flames at a temperature exceeding 2000 °C. The mass and linear ablation rate of the ZrC-coated C/C composites increased by 2.7% and 0.4%, respectively. During Flame Exposure, no recession was observed in the C/C composite. It was demonstrated that the ZrC coating layer can fully protect the C/C composites from oxidation and ablation