热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0461

G. Darut, S. Dieu, L. Meunier, B. Schnuriger, A. Vignes, O. Bihan, Martin Morgeneyer, F. Lezzier, F. Devestel, A. Vion, C. Berguery, J. Roquette

{"title":"Exposure to Nanoparticles in Thermal Spraying — Vigilance Towards the Operator and the Outside Environment","authors":"G. Darut, S. Dieu, L. Meunier, B. Schnuriger, A. Vignes, O. Bihan, Martin Morgeneyer, F. Lezzier, F. Devestel, A. Vion, C. Berguery, J. Roquette","doi":"10.31399/ASM.CP.ITSC2021P0461","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0461","url":null,"abstract":"\u0000 This paper presents the results of an emission study on plasma spraying equipment and processes. Various measurements and samples were taken outside the spraying booth, at the operator level, and in the suction ducts upstream and downstream of the filtration equipment, creating a detailed profile of the aerosol emitted by the injection of NiAl powder in the plasma jet. The results show the existence of two families of particles, one ranging in size from 0.5 to 20 µm, the other of nanometric proportions. Concentrations of the larger particles were in the range of 600 cm-3 in the booth. As for submicron particles, concentrations of up to 107 cm-3 were observed but decreased significantly at the outlet of the filter system. The aerosol samples examined were dominated by a nanometric background of aggregates made up of oxidized nickel particles. Aggregates up to 100 nm in size, consisting of finer particles in the 5-20 nm size range, were found in high concentrations upstream of the filtration system. Great vigilance is thus required to protect equipment operators, an important part of which is placing dust collectors as close as possible to spraying booths connected by short, straight pipe runs.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81856439","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

Study of the Effect of Thickness on the Residual Stress Profile of a Cold Spray Coating by Finite Element Analysis 厚度对冷喷涂涂层残余应力分布影响的有限元分析

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0261

F. Torres, R. Fernandez

{"title":"Study of the Effect of Thickness on the Residual Stress Profile of a Cold Spray Coating by Finite Element Analysis","authors":"F. Torres, R. Fernandez","doi":"10.31399/asm.cp.itsc2021p0261","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0261","url":null,"abstract":"\u0000 The understanding of residual stress is of critical importance in the cold spray and thermal spray processes. It has a direct effect on the integrity of the coating related to the adhesion strength, fatigue life, and can lead to undesired effects such as the delamination of the coating. In cold spray, several investigations have evaluated the impact of the residual stress on the coatings, and it is generally accepted that cold spray coatings follow a similar profile to those obtained in the shot peening process. Although the measurement of residual stresses gives fundamental insight into the process, the estimation of such stresses considering the deposition of each layer by numerical methods has not been extensively studied. This work proposes a method for analyzing the evolution of residual stress on a cold spray coating, both on the coating and the substrate, as a function of the deposited layers, using Finite Element Analysis (FEA). The evolution of the residual stress profile with the coating thickness was obtained along the transverse direction. The results were compared to experimental and numerical data from previous studies. The influence of the deposition of each layer on the residual stress profile has been discussed.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"58 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90683073","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

Wear and Corrosion Behavior of Cold Gas Sprayed Stainless-Steel Coatings Using Solution-Hardened AISI 316L Powder 溶液硬化AISI 316L粉末冷喷涂不锈钢涂层的磨损和腐蚀行为

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0209

T. Lindner, P. Kutschmann, M. Grimm, M. Löbel, J. Fiebig

引用次数: 0

UV-Dual Curing Sealers for Short Cycling Times of Thermally Sprayed Parts 用于热喷涂部件短循环时间的uv -双固化密封剂

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0346

Annika Elsner, C. Kunde, W. Togrund, K. Bobzin, W. Wietheger, E. Burbaum

{"title":"UV-Dual Curing Sealers for Short Cycling Times of Thermally Sprayed Parts","authors":"Annika Elsner, C. Kunde, W. Togrund, K. Bobzin, W. Wietheger, E. Burbaum","doi":"10.31399/ASM.CP.ITSC2021P0346","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0346","url":null,"abstract":"\u0000 The advantages of UV-curing polymers are well known and used in various coating and adhesive applications. Curing times of a few seconds and long application windows allowing an increased throughput in series production. The use of UV-curing polymers in sealers is beneficial, but so far insufficient due to only surface curing. With a newly developed dual-cure mechanism in sealers, it is now possible to combine deep penetration curing and surface curing. The hybrid sealers combine radical polymerization with subsequent polyaddition or polycondensation. The development of sealers for thermal sprayed (TS) coatings involves an extensive requirement profile. This includes properties such as corrosion protection, penetration depth and processing times. High penetration depths of the sealant into the coating system are important to ensure a protection over the full lifetime of the TS coatings. The depth of penetration of the developed sealers into various TS coatings was determined by measuring the gas permeability in a specially developed test procedure. The corrosion protection effect in combination with TS coatings was determined by measuring the cell voltage. In summary, two UV dual-cure sealers have been developed to seal TS coatings with deep penetration and corrosion protection.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82252221","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

Predicted Anode Arc Attachment by Local Thermodynamic Equilibrium (LTE) and Two-Temperature Arc Models in a Cascaded-Anode dc Plasma Spray Torch 用局部热力学平衡(LTE)和双温电弧模型预测阳极电弧在级联阳极直流等离子喷涂炬中的附着

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0360

R. Zhukovskii, C. Chazelas, V. Rat, A. Vardelle, R. Molz

引用次数: 0

Oxidation Behavior of Coating Alloy CoCrMoSi and CoCrMoNiSi in Superheated Steam at 800˚C 涂层合金CoCrMoSi和CoCrMoNiSi在800℃过热蒸汽中的氧化行为

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0307

Bingjie Xiao, Xiao Huang, M. Yao

{"title":"Oxidation Behavior of Coating Alloy CoCrMoSi and CoCrMoNiSi in Superheated Steam at 800˚C","authors":"Bingjie Xiao, Xiao Huang, M. Yao","doi":"10.31399/ASM.CP.ITSC2021P0307","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0307","url":null,"abstract":"\u0000 As steam power plants continue to move towards higher operating temperatures in order to improve efficiency, materials exposed to the working fluid are subjected to accelerated degradations in the forms of surface oxidation and reduced mechanical properties. In this study, the oxidation behavior of two cobalt base alloys, CoCrMoSi (T14) and CoCrNiMoSi (T19), was evaluated in superheated steam (SHS, 0.1MPa) at 800 °C for up to 500 hours. After the exposure, both T14 and T19 alloys experienced weight gain caused by oxidation. Visual observation and SEM surface analysis revealed that T19 had greater extent of surface oxide spallation than that seen on T14. From the cross-sectional evaluation, however, a thin, adherent oxide layer was found to have formed on T19. T14 in fact had suffered from excessive internal oxidation and the surface oxide was uneven. Based on the results obtained so far, it is believed that the finer Laves phase combined with greater amount of Cr in alloy T19 have enabled the formation of a protective oxide layer and thus reduced the extent of internal oxidation. Due to the extensive oxidation ingress along the large Laves phase, it is concluded that T14 is not suitable for applications in SHS at 800 °C.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88229241","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

Numerical Simulation of Solid Ti6AI4V Particles Impinging on a Stainless-Steel Substrate at High Speed: Influence of the Particle Temperature 固体Ti6AI4V颗粒高速撞击不锈钢基体的数值模拟:颗粒温度的影响

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0402

P. Khamsepour, C. Moreau, A. Dolatabadi

{"title":"Numerical Simulation of Solid Ti6AI4V Particles Impinging on a Stainless-Steel Substrate at High Speed: Influence of the Particle Temperature","authors":"P. Khamsepour, C. Moreau, A. Dolatabadi","doi":"10.31399/ASM.CP.ITSC2021P0402","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0402","url":null,"abstract":"\u0000 Additive manufacturing processes have been used to produce or repair components in different industry sectors like aerospace, automotive, and biomedical. In these processes, a part can be built by either melted particles as in selective laser melting (SLM) or solid-state particles as in the cold spray process. The cold spray has gained significant attention due to its potential for high deposition rate and nearly zero oxidation. However, the main concern associated with using the cold spray is the level of porosity in as-fabricated samples, altering their mechanical properties. These pores are primarily found in the regions where adiabatic shear instability does not occur. It is worth noting that the deformation of the impacted solid particle plays a vital role in reaching the shear instability. Therefore, for investigating the adiabatic shear instability region, an elastic-plastic simulation approach has been used. For this purpose, it is assumed that an elevated temperature solid Ti6Al4V particle impacts on a stainless-steel substrate surface at high velocity. The results show that increasing particle temperature will significantly enhance particle deformation because of thermal softening. Additionally, they illustrate that a material jet responsible for producing a bonding between particle and substrate by ejecting the broken oxide layer will be formed when the particle has a temperature above 1073 K and substrate remains at room temperature. In the end, it should be noted that increasing particle temperature up to 723 K will not have a significant effect on substrate deformation and final substrate temperature.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90923909","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

Development of Advanced TBC for 1650 °C Class Gas Turbine 1650℃级燃气轮机先进TBC的研制

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0695

Okajima Yoshifumi, T. Torigoe, M. Mega, Masamitsu Kuwabara, Okaya Naotoshi

引用次数: 3

Development of 45S5/PEEK Bioactive Coatings by Cold Gas Spray for Orthopedic Implants 低温气体喷涂45S5/PEEK生物活性涂层的研制

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0578

B. Garrido, V. Albaladejo-Fuentes, I. G. Cano, S. Dosta

{"title":"Development of 45S5/PEEK Bioactive Coatings by Cold Gas Spray for Orthopedic Implants","authors":"B. Garrido, V. Albaladejo-Fuentes, I. G. Cano, S. Dosta","doi":"10.31399/ASM.CP.ITSC2021P0578","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0578","url":null,"abstract":"\u0000 Cold Gas Spray (CGS) technology has allowed the development of biofunctional composite coatings composed of 45S5 and Polyetheretherketone (PEEK). The combination of a bioactive glass material embedded in a biocompatible polymeric matrix becomes this new composite in an interesting material for orthopedic applications since meet the biomechanical and biological requirements of an artificial implant. In the present study, blends of bioactive glass 45S5 and PEEK powder with different granulometry and 45S5/PEEK ratio have been prepared. These mixtures of powders have been deposited onto PEEK substrates by CGS with the goal of incorporating a bioactive additive to the biocompatible polymer, which can improve the bone-implant interaction of PEEK. The deposition efficiency (DE) and thickness of the coatings have been evaluated and from the results obtained, it was possible to conclude that DE and coating thickness are significantly affected by the granulometry and by the 45S5/PEEK ratio of the blends. By Scanning Electron Microscopy (SEM) inspection, it was observed that the use of blends with high 45S5/PEEK ratio led to the deposition of coatings with high content of 45S5 particles embedded in the polymeric matrix. Finally, the friction behavior of the coatings was analyzed performing ball-on-disk tests and these experiments showed that the presence of glass particles has a beneficial role in the wear resistance of the coatings.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77202266","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

Influence of Bondcoat Topography on the Properties of Suspension Sprayed YSZ Thermal Barrier Coatings 粘结层形貌对悬浮喷涂YSZ热障涂层性能的影响

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0009

F. Toma, Julia Sagel, C. Leyens, K. Slámečka, S. Tkachenko, L. Čelko

{"title":"Influence of Bondcoat Topography on the Properties of Suspension Sprayed YSZ Thermal Barrier Coatings","authors":"F. Toma, Julia Sagel, C. Leyens, K. Slámečka, S. Tkachenko, L. Čelko","doi":"10.31399/asm.cp.itsc2021p0009","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0009","url":null,"abstract":"\u0000 Intensive R&D work of more than one decade has demonstrated many unique coating properties; particularly for oxide ceramic coatings fabricated by suspension thermal spraying technology. Suspension spraying allows producing yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBC) with columnar microstructure; similar to those produced by electron-beam physical vapor deposition (EB-PVD); and vertically cracked morphologies; with a generally low thermal conductivity. Therefore; suspension sprayed YSZ TBCs are seen as an alternative to EB-PVD coatings and those produced by conventional air plasma spray (APS) processes. Nonetheless; the microstructure of the YSZ topcoat is strongly influenced by the properties of the metallic bondcoat. In this work; direct laser interference patterning (DLIP) was applied to texture the surface topography of Ni-alloy based plasma sprayed bondcoat. Suspension plasma spraying (SPS) was applied to produce YSZ coatings on top of as-sprayed and laser-patterned bondcoat. The samples were characterized in terms of microstructure; phase composition and thermal cycling performance. The influence of the bondcoat topography on the properties of suspension sprayed YSZ coatings is presented and discussed.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80242376","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

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