International Thermal Spray Conference最新文献_第7页

Performance of Plasma-Sprayed Bi2O3–Er2O3–WO3 for Intermediate-Temperature Solid Oxide Fuel Cells (IT-SOFCs) 等离子喷涂Bi2O3-Er2O3-WO3中温固体氧化物燃料电池性能研究

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0604

R. Chen, Xiao-Tao Luo, Li Zhang, Di Wang, Cheng-Xin Li, Chang Li

{"title":"Performance of Plasma-Sprayed Bi2O3–Er2O3–WO3 for Intermediate-Temperature Solid Oxide Fuel Cells (IT-SOFCs)","authors":"R. Chen, Xiao-Tao Luo, Li Zhang, Di Wang, Cheng-Xin Li, Chang Li","doi":"10.31399/asm.cp.itsc2023p0604","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0604","url":null,"abstract":"\u0000 The previous results have shown that dense bismuth oxidebased electrolytes can be fabricated simply by plasma spraying owing to their low melting point. In this study, the Bi2O3– Er2O3–WO3 electrolyte of high ionic conductivity was deposited by the cost-effective plasma spraying to assemble the SOFC for examining its electrochemical performance. The SOFC cell consisted of FeCr24.5 metal support, NiO-YSZ anode, 10 mol% scandium oxide-stabilized zirconium oxide (ScSZ) electrolyte, (Bi2O3)0.705 (Er2O3)0.245 (WO3)0.05 (EWSB) electrolyte, and La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) cathode. The ScSZ electrolyte interlayer was introduced between the anode and EWSB electrolyte to hinder the reduction of EWSB in the anode environment. NiO-YSZ, ScSZ, EWSB, and LSCF were deposited by plasma spraying on the metal support which was prepared by a press-forming-sintering process. The NiO-YSZ/ ScSZ/ EWSB/ LSCF single cell assembled with the as-sprayed ScSZ presented an open circuit potential of 0.90V at 600 °C and the maximum power density of 1130 mW cm-2 at 750 °C, 450 mW cm-2 at 650 °C, and 128 mW cm-2 at 550 °C. The plasma sprayed ScSZ electrolyte was then densified through impregnating using yttrium and zirconium nitrate solutions followed by annealing treatment. The single cell assembled with the densified ScSZ presented an open circuit potential up to 1.004V at 600 °C and the maximum power density of 1356 mW cm-2 at 750 °C, 619 mW cm-2 at 650 °C, and 163 mW cm-2 at 550 °C. The performance of the cell was significantly improved by the post-spray densification treatment of the ScSZ electrolyte. The present result shows that the high performance NiO-YSZ/ScSZ/EWSB/LSCF cell at intermediate temperatures can be successfully fabricated by plasma spraying.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133389903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tab-to-Busbar Interconnects Formed by Dual Flow Cold Spraying 双流冷喷涂形成的表板-母线互连

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0597

R. Maev, V. Leshchynsky, E. Strumban, Mircea A. Pantea, B. Robert, Thomas P. Brackett

引用次数: 0

Influence of Surface Geometry and Microstructural Features on the Delamination and Crack Propagation of Brittle Convex Thermal Barrier Films during Thermal Cyclic Loading 热循环加载过程中表面几何和微观结构特征对脆性凸热障膜分层和裂纹扩展的影响

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0001

A. Nastic, L. Pershin, J. Mostaghimi

{"title":"Influence of Surface Geometry and Microstructural Features on the Delamination and Crack Propagation of Brittle Convex Thermal Barrier Films during Thermal Cyclic Loading","authors":"A. Nastic, L. Pershin, J. Mostaghimi","doi":"10.31399/asm.cp.itsc2023p0001","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0001","url":null,"abstract":"\u0000 The influence of air plasma sprayed alumina coating geometry, microstructure, interface roughness on its delamination and crack propagation resistance during low temperature thermal cycling, i.e. thermal mismatch stress, is investigated both numerically and experimentally. Previous studies on thermal cycling loading concentrate on flat, numerically designed locally curved specimens and/or mathematically modeled roughness without extension towards real coating morphology, which renders the conclusions less practically driven. Results show that arbitrarily oriented cracks originate predominantly near the coating/substrate interface and propagate along zones of high tensile and shear residual stress. The crack path deflection was attributed to the complex stress concentration structure resultant from the intricate microstructural porosity and coating general convex geometry. Microstructural features such as porosity increase the interfacial and coating tensile stress, which may lead to important delamination processes even during low temperature thermal cycling.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115209276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive Manufacturing of Channels and Surface Features Using Wire-Arc Spray 使用电弧喷涂的通道和表面特征的增材制造

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0179

J. Palumbo, R. Ramaraju, S. Chandra

{"title":"Additive Manufacturing of Channels and Surface Features Using Wire-Arc Spray","authors":"J. Palumbo, R. Ramaraju, S. Chandra","doi":"10.31399/asm.cp.itsc2023p0179","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0179","url":null,"abstract":"\u0000 Developing a cost-effective fabrication method for devices containing metal channels with surface features on the submillimeter scale is essential for the development of novel, high efficiency micro-reactors and heat sinks. Traditional methods are limited by their high cost, low geometric accuracy, high energy consumption, and long processing times. This study presents a low-cost additive manufacturing method using twin wire arc spray to make surface features at the sub-millimeter scale. Water-soluble polyvinyl alcohol (PVA) paste is first placed onto a mold containing a negative of the desired surface features and allowed to cure. The cured PVA is removed from the negative and metal sprayed onto its surface. The deposited metal film was backed by epoxy for added rigidity. The PVA paste was then dissolved in a water bath, resulting in a metal surface with the surface features of the mold. Surface features with length scales as small as 200 μm were reproduced. Coating delamination was prevented by minimizing the temperature of the substrate during spraying by increasing the standoff distance and scanning speed of the spray torch.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115223300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How to Determine Process Fluctuations in Wire-Arc Spraying 如何确定电弧丝喷涂过程中的工艺波动

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0135

K. Bobzin, H. Heinemann, E. Burbaum, H. Naber

{"title":"How to Determine Process Fluctuations in Wire-Arc Spraying","authors":"K. Bobzin, H. Heinemann, E. Burbaum, H. Naber","doi":"10.31399/asm.cp.itsc2023p0135","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0135","url":null,"abstract":"\u0000 Wire-arc spraying is particularly used for large-area coatings due to the high cost efficiency of the process but is also characterized by strong fluctuations. Nowadays, a costly and time-consuming inspection is required after coating in order to identify and eliminate possible coating defects caused by the process instability. Therefore, a sensor unit with seven channels is established, which realizes an in situ monitoring of the process. The voltage and current sensors are analyzed in detail within this work. Additionally, a variation of the process parameters voltage and wire feed was used to compare the data of a stable and an instable process regarding the arc stability. For a deeper understanding of the process and its performance, the surface is characterized by confocal laser scanning microscopy and cross-sections are investigated by SEM as well as light microscopy. The new and so far, unique sensor unit is successfully established for the current and the voltage sensor on the wire-arc spraying process. The in situ recording identifies fluctuations of the spraying process. Anomalies of the current I were detected before the break down of the arc occurred. The parameter variation showed an influence on the coating properties. A higher voltage results in a denser coating structure.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125184892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alloy Design of Feedstock Material for Additive Manufacturing—Exploring the Al-Co-Cr-Fe-Ni-Ti Compositionally Complex Alloys 增材制造原料的合金设计——Al-Co-Cr-Fe-Ni-Ti复合合金的探索

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0414

L. Gerdt, M. Müller, M. Heidowitzsch, J. Kaspar, E. López, M. Zimmermann, C. Leyens, A. Hilhorst, P. Jacques

{"title":"Alloy Design of Feedstock Material for Additive Manufacturing—Exploring the Al-Co-Cr-Fe-Ni-Ti Compositionally Complex Alloys","authors":"L. Gerdt, M. Müller, M. Heidowitzsch, J. Kaspar, E. López, M. Zimmermann, C. Leyens, A. Hilhorst, P. Jacques","doi":"10.31399/asm.cp.itsc2023p0414","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0414","url":null,"abstract":"\u0000 The need for sustainable use of resources requires continuous improvement in the energy efficiency and development of new approaches to the design and processing of suitable materials. The concept of high entropy alloys (HEAs) has recently been extended to more general compositional complex alloys (CCAs) and multi-principal element alloys (MPEAs). One of the major challenges on the way to application of these alloys is the extensive design and selection efforts due to the great variety of possible compositions and its consequences for workability and resulting material properties. The favorable high-temperature strength of Ni-based and Co-based superalloys is ascribed to a defined γ/γ’ structure consisting of a disordered FCC A1 matrix and ordered L12 γ’ precipitates. In the current work we extended this design concept to CCAs, allowing disordered BCC A2 and ordered B2 phases in additions or in substitution of the original γ/γ’ structure. We used a high-throughput screening approach combining CALPHAD-based computational tools with in situ alloying by means of laser cladding. Wall-type specimens with gradient composition in the system Al-Co-Cr-Fe-Ni-Ti with varying Al, Ti and Cr content were analyzed. The combined modelling and experimental screening approach was demonstrated to be a powerful tool for designing new high performance AM-ready feedstock.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125862863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Cold Gas Spraying 3D Printing of Ti Bipolar Plates for PEM Water Electrolyzers Cost Reduction PEM水电解槽用钛双极板的低温气体喷涂3D打印技术

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0173

A. Garfias, R. Vaz, V. Albaladejo-Fuentes, J. Sánchez, M. Sarret, T. Andreu, I. G. Cano, A. Rocha, R. Ferreira, D. Falcão, A. Pinto

{"title":"Cold Gas Spraying 3D Printing of Ti Bipolar Plates for PEM Water Electrolyzers Cost Reduction","authors":"A. Garfias, R. Vaz, V. Albaladejo-Fuentes, J. Sánchez, M. Sarret, T. Andreu, I. G. Cano, A. Rocha, R. Ferreira, D. Falcão, A. Pinto","doi":"10.31399/asm.cp.itsc2023p0173","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0173","url":null,"abstract":"\u0000 One of the main problems that slows down the implementation of the green hydrogen (H2) economy is the cost of water electrolysis. While part of this cost is associated to the price of electricity, a significant part relies on the parts of the electrolyzers. Despite their advantages, Proton Exchange Membrane Water Electrolyzers (PEMWE) still have to overcome some drawbacks to reduce its H2 production cost, while maintaining high efficiencies. For decades, thermal spraying has been used for the production of coatings all over the world because of its versatility in industry for machinery and tools preservation, surfaces protection and corrosion prevention. This study demonstrates the possibilities of Cold Gas Spray (CGS) for the cost-reductive production of a component of PEMWEs, the Bipolar Plates (BPPs), by metal 3D printing. In this process, the incorporation of a mask between the nozzle exit and the substrate can drastically transform the BPP production to a very fast and automatic bottom-up process where material is deposited layer by- layer for building up the three-dimensional flow field patterns from a flat surface. Microstructure and topography of 3D printed BPPs were inspected by microscopy techniques. For evaluating the fulfilment of BPPs requirements (interfacial contact resistance and corrosion resistance) the new BPPs were characterized following the Davies’ method and with potentiodynamic test in O2-saturated H2SO4 solutions, respectively.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126542856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Oxidation of Heavily Deformed Zn Coatings Produced by Cold Spray and Formation of ZnO Nanowires 冷喷涂重变形锌涂层的热氧化及ZnO纳米线的形成

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0295

M. Razavipour, D. Criado, A. Zúñiga, B. Jodoin

{"title":"Thermal Oxidation of Heavily Deformed Zn Coatings Produced by Cold Spray and Formation of ZnO Nanowires","authors":"M. Razavipour, D. Criado, A. Zúñiga, B. Jodoin","doi":"10.31399/asm.cp.itsc2023p0295","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0295","url":null,"abstract":"\u0000 Zinc oxide (ZnO) is known for its rich diversity of microstructures and has been attracting attention for its unique combination of mechanical and physical properties. It has been a material of interest in different areas such as optoelectronics, sensors and the general ceramic industry. It also has been a material of interest in biomedicine due to its antimicrobial characteristics and biocompatibility properties. A simple processing route to produce ZnO micro/nanostructures is the thermal oxidation of zinc, which results in a wide range of ZnO nanostructures depending on the oxidation conditions. The main objective of this study was to investigate the influence of a severe plastically deformed zinc microstructure on the formation of ZnO nanostructures produced by oxidation, with a special attention to the zinc oxide growth mechanism and nanostructures characteristics. For this purpose, the cold spray process was used to produce Zn coatings using different feedstock powders that required different process parameters in order to obtain Zn coatings with severely deformed particles. A non-catalytic thermal oxidation method was then used to successfully produce ZnO nanostructures at the surface of the heavily deformed cold sprayed Zn coatings. The as-grown ZnO nanostructures were investigated in detail using scanning electron microscopy and X-ray photoelectron spectroscopy. These investigations revealed that the chemical fingerprint of the oxides grown in the cold sprayed samples was different from that of conventional ZnO. It was also observed that in the oxidized cold sprayed Zn coatings, the formation of ZnO nanowires was hindered due to the formation of blisters generated during the high temperature exposure, revealing nonoptimized process parameters.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129200214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High Ductility and Strength by Internal Interface Recrystallization of Cold Sprayed Zinc and its Fracture Behavior 冷喷涂锌的界面再结晶及其断裂行为

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0250

Chunjie Huang, L. Wiehler, A. List, A. Elsenberg, F. Gärtner, T. Klassen, Banglong Fu, Ting Chen, B. Klusemann, Zhengmao Zhang, Wenya Li

{"title":"High Ductility and Strength by Internal Interface Recrystallization of Cold Sprayed Zinc and its Fracture Behavior","authors":"Chunjie Huang, L. Wiehler, A. List, A. Elsenberg, F. Gärtner, T. Klassen, Banglong Fu, Ting Chen, B. Klusemann, Zhengmao Zhang, Wenya Li","doi":"10.31399/asm.cp.itsc2023p0250","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2023p0250","url":null,"abstract":"Tailoring strength and ductility in additive manufacturing or repair is key to successful applications. Therefore, cold spraying must be tuned for maximum amounts of well-bonded internal interfaces as well as sufficient softening of the highly workhardened deposit. Zinc (Zn) with its low melting temperature is an ideal model system to study phenomena associated with high strain rate deformation and local temperature distributions, both, in single impacts and thicker deposits. Bonding and recrystallization can be facilitated by covering selected wide parameter regimes in cold spraying. Despite the low temperatures, Zn single splats already show recrystallization at internal interfaces, the respective amounts then scaling with increasing process gas temperatures. At higher process temperatures, deposits are almost fully recrystallized. The recrystallization seems to improve bonding at internal and at deposit-substrate interfaces. Under optimum conditions, an ultimate deposit cohesive strength of up to 135 MPa and an elongation to failure of 18.4% are reached, comparable to that of laser-manufactured or bulk Zn parts. This demonstrates a welltuned interplay between high amounts of bonded interfaces and softening by recrystallization that allows for deriving bulk-like performance of cold sprayed material without additional posttreatments. Correlations between microstructures, mechanical properties, and fracture mechanisms supply information about prerequisites needed for reaching high ductility as obtained in damage and failure modes of deposits and bulk materials in global and local approaches.","PeriodicalId":114755,"journal":{"name":"International Thermal Spray Conference","volume":"83 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131830622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Printed Thermal Sensors for Harsh Environment by Plasma Spray 等离子喷涂印刷恶劣环境热传感器

International Thermal Spray Conference Pub Date : 2023-05-22 DOI: 10.31399/asm.cp.itsc2023p0316

F. Duminica, M. Karuppasamy, P. Guaino

引用次数: 0