Nanostructured zirconia layers as thermal barrier coatings

Ilina, Sorina; Ionitã, Gheorghe; Manoliu, Victor; Robert, PITICESCU Radu

doi:10.13111/2066-8201.2011.3.3.7

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…The quick thermal shock test of multilayer structures with intermediate layer achieved in this stage evidences the segregation as parallel rows of aluminum, a fundamental element from the BC/TC (bond coat/top coat) adhesion and also of the no uniform repartition of the Co and Zr elements in the intermediate layer. The Al segregation as rows in the BC(bond coat) differs from the classical re-partition , at interface BC/TC and is due to the testing specific conditions as per INCAS procedure-high heating-cooling speeds and short dwell time at settled temperature [7,8].…”

Section: Discussionmentioning

confidence: 99%

Multilayer Ceramic Materials Testing under the Terms of High Heating-Cooling Gradients

Dimitriu

Manoliu

Ionitã

et al. 2015

AMR

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Increasing the functional parameters and endurance of the turbines, blades systems, rocket engines, high-performance metallurgical installations, power energy require the creation of new systems for integrated assessment, testing-investigating.From the ensemble of wear factors acting simultaneously on the multilayer ceramic materials, associated to the coatings structures, the quick thermal shock acts most disruptive.To illustrate the effect of gradients with high value for heating-cooling the authors have designed and developed a versatile installation with semi-automatic functioning and monitoring test parameters. The fundamental testing parameter that the installation uses is heating-cooling speed up to 100 ° C/s, which is superior to the performances of the known testing installations.The extreme thermal shock testing parameters generate in the multilayers ceramic structures, triplex type with intermediate layer, structural, morphological and composition modifications which initiate and develop the ceramic layer spallation.

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Section: Discussionmentioning

confidence: 99%

Multilayer Ceramic Materials Testing under the Terms of High Heating-Cooling Gradients

Dimitriu

Manoliu

Ionitã

et al. 2015

AMR

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“…Differently, the suspension plasma spray (SPS) process uses very fine suspended liquid particles in the liquid phase to inject the coating material into the plasma torch. Compared to the APS method, SPS is a more complex technique, which requires more training, but which offers improved properties of the obtained coatings [146,149,150]. The deposition process has a strong influence on the micro-structure and morphology of a coated layer.…”

Section: Thermal Barrier Coatings For Ni-based Superalloysmentioning

confidence: 99%

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

et al. 2021

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Several applications where extreme conditions occur require the use of alloys often containing many critical elements. Due to the ever increasing prices of critical raw materials (CRMs) linked to their high supply risk, and because of their fundamental and large utilization in high tech products and applications, it is extremely important to find viable solutions to save CRMs usage. Apart from increasing processes’ efficiency, substitution, and recycling, one of the alternatives to preserve an alloy and increase its operating lifetime, thus saving the CRMs needed for its manufacturing, is to protect it by a suitable coating or a surface treatment. This review presents the most recent trends in coatings for application in high temperature alloys for aerospace engines. CRMs’ current and future saving scenarios in the alloys and coatings for the aerospace engine are also discussed. The overarching aim of this paper is to raise awareness on the CRMs issue related to the alloys and coating for aerospace, suggesting some mitigation measures without having the ambition nor to give a complete overview of the topic nor a turnkey solution.

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“…In recent years, metal oxide based nanomaterials are emerging in various areas such as thermal barrier [1], gas sensor [2], solar cells [3], drug delivery [4], and biomedical applications [5] due to ease of preparation and possibility in tailoring chemical and physical properties. Nanoporous oxide materials possess tremendous applications in water purification [6], biosensors [7], therapeutics [8], optical sensors [9], oxygen carrier [10], battery technology [11], and bioimaging [12].…”

Section: Introductionmentioning

confidence: 99%

Current Trends in Nanoporous Anodized Alumina Platforms for Biosensing Applications

Sriram

Patil

Bhat

et al. 2016

Journal of Nanomaterials

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Pristine aluminum (Al) has received great deal of attention on fabrication of nanoporous anodized alumina (NAA) with arrays of nanosized uniform pores with controllable pore sizes and lengths by the anodization process. There are many applications of NAA in the field of biosensors due to its numerous key factors such as ease of fabrication, high surface area, chemical stability and detection of biomolecules through bioconjugation of active molecules, its rapidness, and real-time monitoring. Herein, we reviewed the recent trends on the fabrication of NAA for high sensitive biosensor platforms like bare sensors, gold coated sensors, multilayer sensors, and microfluidic device supported sensors for the detection of various biomolecules. In addition, we have discussed the future prospectus about the improvement of NAA based biosensors for the detection of biomolecules.

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Nanostructured zirconia layers as thermal barrier coatings

Cited by 4 publications

References 6 publications

Multilayer Ceramic Materials Testing under the Terms of High Heating-Cooling Gradients

Multilayer Ceramic Materials Testing under the Terms of High Heating-Cooling Gradients

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

Current Trends in Nanoporous Anodized Alumina Platforms for Biosensing Applications

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