Oxidation resistance of NITE-SiC/SiC composites with/without CVD-SiC environmental barrier coating

Park, Joon Soo; Kim, Jong‐Il; Nakazato, Naofumi; Kishimoto, Hirotatsu; Makimura, Shunsuke

doi:10.1016/j.ceramint.2018.06.194

Cited by 25 publications

(5 citation statements)

References 13 publications

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“…Since the performance of NITE SiC/SiC is concerned to degrade due to the oxidation of PyC interphase, it is necessary to protect the PyC interphase. Therefore, the oxidation behavior of NITE SiC/SiC with CVD (Chemical Vapour Deposition) -SiC coating was studied, and its high performance was confirmed [16].…”

Section: Oxidation Resistance Of Nite Sic/sicmentioning

confidence: 93%

Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities

Makimura

Park

Sato

et al. 2020

Proceedings of the 14th International Workshop on Spallation Materials Technology

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The feasibility study for Nano-Infiltration and Transient Eutectic phase process SiC/SiC (NITE SiC/SiC)NITE SiC/SiC as a potential novel target material for pions/muons production at high-power proton accelerators facilities is in progress. Compared with graphite that is the principal target material for pions/muons production, higher transport efficiency and higher oxidation resistance can be expected. However, the residual radiation dose of NITE SiC/SiC is 400 times higher than that of graphite a year after the irradiation. To validate the simulation, the residual radionuclides of the irradiated samples have been analyzed by gamma-ray spectroscopy. To understand the thermal shock behavior, NITE-SiC/SiC was included in the HRMT35 experiment at CERN's HiRadMat facility. In these studies, NITE SiC/SiC is proved to be a promising material for pions/muons production with the higher transport efficiency and the oxidation resistance, though the maintenance scenario has to be carefully designed due to higher residual radiation dose. The thermal shock resistance and proton-irradiation resistance of NITE SiC/SiC will be confirmed to be applied for the pions/muons production.

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Section: Oxidation Resistance Of Nite Sic/sicmentioning

confidence: 93%

Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities

Makimura

Park

Sato

et al. 2020

Proceedings of the 14th International Workshop on Spallation Materials Technology

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“…Nano-powder Infiltration and Transient Eutectoid (NITE) SiC/SiC composite is another promising candidate for target material as it is significantly denser and can thus provide higher efficiency of secondary-particles transport. It also exhibits high oxidation resistance and pseudo-ductile behavior which enables it to withstand higher stresses [18][19][20][21].…”

Section: Sic-coated Graphite and Sic-sic Compositesmentioning

confidence: 99%

High Power Targetry R&D and support for future generation accelerator

et al. 2023

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A high-power target system is a key beam element to complete future High Energy Physics (HEP) experiments. The target endures high power pulsed beam, leading to high cycle thermal stresses/pressures and thermal shocks. The increased beam power will also create significant challenges such as corrosion and radiation damage that can cause harmful effects on the material and degrade their mechanical and thermal properties during irradiation. This can eventually lead to the failure of the material and drastically reduce the lifetime of targets and beam intercepting devices. Designing a reliable target is already a challenge for MW class facilities today and has led several major accelerator facilities to operate at lower power due to target concerns. With present plans to increase beam power for next generation accelerator facilities in the next decade and the multi-year time-scale to acquire the knowledge on material behavior under such extreme environment, timely R&D of robust high-power targets is critical to fully secure the physics benefits of ambitious accelerator power upgrades. The next generation of high-power targets for future accelerators will use more complex geometries, novel materials, and new concepts allowing better high heat flux cooling methods. Advanced numerical simulations need to be developed to satisfy the physical design requirements of reliable beam-intercepting devices. In parallel, radiation hardened beam instrumentation irradiation methods for high-power targets must be further developed. Additional irradiation facilities are needed since only a few facilities worldwide offer beams for target testing, and the beam provided may not be appropriate for the specific facility or project. Thus, a comprehensive research and development program must be implemented to address the challenges that multi-MW targets face.

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“…The NITE process is an applied liquid phase sintering method, which is appropriate to form the crystallized and dense SiC matrix in SiC-SiC composites. In comparison with carbon-based materials, SiC-SiC has a significantly higher density (2.83 g/cm 3 ) and has a much greater oxidation resistance [27]. The tested SiC-SiC composite is built up in layers of 150 − 200 μm thick made of alternating unidirectionally oriented fibres in a 0/90 degree configuration [22].…”

Section: Target Materials and Preparationmentioning

confidence: 99%

High intensity proton beam impact at 440 GeV/c on Mo and Cu coated CfC/graphite and SiC/SiC absorbers for beam intercepting devices

Maestre¹,

Bahamonde²,

Garcia³

et al. 2022

J. Inst.

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Beam Intercepting Devices (BIDs) are essential protection elements for the operation of the Large Hadron Collider (LHC) complex. The LHC internal beam dump (LHC Target Dump Injection or LHC TDI) is the main protection BID of the LHC injection system; its main function is to protect LHC equipment in the event of a malfunction of the injection kicker magnets during beam transfer from the SPS to the LHC. Several issues with the TDI were encountered during LHC operation, most of them due to outgassing from its core components induced by electron cloud effects, which led to limitations of the injector intensity and hence had an impact on LHC availability. The absorbing cores of the TDIs, and of beam intercepting devices in general, need to deal with high thermo-mechanical loads induced by the high intensity particle beams. In addition, devices such as the TDI — where the absorbing materials are installed close to the beam, are important contributors to the accelerator impedance budget. To reduce impedance, the absorbing materials that make up the core must be typically coated with high electrical conductivity metals. Beam impact testing of the coated absorbers is a crucial element of development work to ensure their correct operation. In the work covered by this paper, the behaviour of several metal-coated absorber materials was investigated when exposed to high intensity and high energy proton beams in the HiRadMat facility at CERN. Different coating configurations based on copper and molybdenum, and absorbing materials such as isostatic graphite, Carbon Fibre Composite (CfC) and Silicon Carbide reinforced with Silicon Carbide fibres (SiC-SiC), were tested in the facility to assess the TDI's performance and to extract information for other BIDs using these materials. In addition to beam impact tests and an extensive Post Irradiation Examination (PIE) campaign to assess the performance of the coatings and the structural integrity of the substrates, extensive numerical simulations were carried out.

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Oxidation resistance of NITE-SiC/SiC composites with/without CVD-SiC environmental barrier coating

Cited by 25 publications

References 13 publications

Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities

Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities

High Power Targetry R&D and support for future generation accelerator

High intensity proton beam impact at 440 GeV/c on Mo and Cu coated CfC/graphite and SiC/SiC absorbers for beam intercepting devices

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