热喷涂技术最新文献_第10页

Cold Spray Deposition of Heat-Treated Inconel 718 Powders 热处理Inconel 718粉末的冷喷涂沉积

热喷涂技术 Pub Date : 2021-05-25 DOI: 10.31399/asm.cp.itsc2021p0171

Lorena Perez, J. Colburn, L. Brewer, M. Renfro, T. Mckechnie

{"title":"Cold Spray Deposition of Heat-Treated Inconel 718 Powders","authors":"Lorena Perez, J. Colburn, L. Brewer, M. Renfro, T. Mckechnie","doi":"10.31399/asm.cp.itsc2021p0171","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0171","url":null,"abstract":"\u0000 In this work; Inconel 718 gas-atomized powder was successfully heat treated over the range of 700-900°C. As-atomized and as-heat treated powders were cold sprayed with both nitrogen and helium gasses. Cold spray of high strength materials is still challenging due to their resistance to particle deformation affecting the resulting deposit properties. Powder heat treatment to modify its deformation behavior has recently been developed for aluminum alloy powders; however; there is no literature reported for Inconel 718 powders. The microstructural evolution of the powder induced by the heat treatment was studied and correlated with their deformation behavior during the cold spray deposition. Deposits sprayed with heat-treated powders at 800 and 900 °C and nitrogen showed less particle deformation and higher porosity as compare to as-atomized deposit associated to the presence of delta phase in the powders precipitated by the heat treatment. In contrast; deposits sprayed with helium using both powder conditions; as-atomized and as heat-treated powders; showed high particle deformation and low porosity indicating that the type of gas has a greater effect on the particle deformation than the delta phase precipitated in the heat-treated powders. These results contribute to understanding the role of powder microstructure evolution induced by heat treatment on the cold spray deposits properties.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85738757","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: 2

Cold Spray MCrAlY Coatings on Single-Crystal Ni-Base Superalloys: A Substrate Perspective 单晶镍基高温合金冷喷涂mccraly涂层:衬底视角

热喷涂技术 Pub Date : 2021-05-25 DOI: 10.31399/asm.cp.itsc2021p0051

D. Guo, B. Jodoin, L. Zhao

{"title":"Cold Spray MCrAlY Coatings on Single-Crystal Ni-Base Superalloys: A Substrate Perspective","authors":"D. Guo, B. Jodoin, L. Zhao","doi":"10.31399/asm.cp.itsc2021p0051","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0051","url":null,"abstract":"\u0000 The hot-section components of modern gas turbines (e.g.; turbine blades and vanes) are typically manufactured from Nibase superalloys. To develop the γ/γ' microstructure that imparts superior thermomechanical and creep properties; Nibase superalloys usually require three distinct heat treatments: first a solution heat treatment; followed by primary aging; and finally secondary aging. To achieve oxidation resistance; MCrAlY coatings are applied on the superalloy components as either environmental coatings or bond coats for thermal barrier coatings. In this study; the effects of different processing sequences on MCrAlY coating characteristics and short-term isothermal oxidation performance were investigated. Specifically; cold spray deposition of NiCoCrAlTaY coatings was carried out on single-crystal Ni-base superalloy substrates that underwent various degrees of the full heat treatments prior to being coated. The remaining required heat treatments for the superalloy substrates were then performed on the coated samples after the cold spray deposition. The microstructures of the CMSX-4 substrates and NiCoCrAlTaY coatings were characterized after each heat treatment. Isothermal oxidation performance of the coated samples prepared using different sequences was evaluated at 1100°C for 2 hours. The results suggested a promising procedure of performing only solution heat treatment on the superalloy substrate before coating deposition and then primary aging and secondary aging on the coated samples. This processing sequence could potentially improve the oxidation performance of MCrAlY coatings; as the aging processes can be used to effectively homogenize coating microstructure and promote a thin thermally grown oxide (TGO) scale prior to actual isothermal oxidation.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85805455","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

Pulsed-PTA Preparation of B4C-Based Titanium Matrix Cermet 脉冲pta法制备b4c基钛基金属陶瓷

热喷涂技术 Pub Date : 2021-05-24 DOI: 10.31399/asm.cp.itsc2021p0298

P. Rohan, M. Kolaříková, S. Krum, Zdeněk Hazdra, J. Sepitka, Jiří Kuchař

引用次数: 0

Investigation of Agglomerated and Porous Ceramic Powders Suitable for Cold Spray 适用于冷喷涂的烧结多孔陶瓷粉体的研究

热喷涂技术 Pub Date : 2021-05-24 DOI: 10.31399/asm.cp.itsc2021p0139

G. Celeste, V. Guipont, D. Missoum-Benziane

引用次数: 1

Cold Sprayed Tungsten Armor for Tokamak First Wall 用于托卡马克第一墙的冷喷涂钨装甲

热喷涂技术 Pub Date : 2019-12-07 DOI: 10.3390/coatings9120836

J. Cizek, M. Vilémová, F. Lukáč, M. Koller, J. Kondás, Reeti Singh

引用次数: 15

The Coating Properties of Carbide Cermet Coatings Produced by HVOF-YAG Hybrid Spraying HVOF-YAG复合喷涂硬质合金涂层的涂层性能

热喷涂技术 Pub Date : 2005-05-02 DOI: 10.31399/asm.cp.itsc2005p0372

T. Kuwashima, T. Saitoh, H. Saitoh, H. Horie, A. Ohmori

{"title":"The Coating Properties of Carbide Cermet Coatings Produced by HVOF-YAG Hybrid Spraying","authors":"T. Kuwashima, T. Saitoh, H. Saitoh, H. Horie, A. Ohmori","doi":"10.31399/asm.cp.itsc2005p0372","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2005p0372","url":null,"abstract":"\u0000 Although thermal spraying technique is used in many industries, it suffers from several problems. For example, the hardness of the coatings is lower than that of sintered material for the incompleted cohesiveness. An yttrium aluminum garnet (YAG) laser was used during HVOF spraying to improve the properties of the applied coating. Several carbide powders were used as thermal spray materials, and stainless steel (SUS304) was used as substrate. Coatings were sprayed by hybrid spraying method, which was combined HVOF spraying with YAG laser. The hardness of coatings sprayed by hybrid spraying was higher, and the weight loss in a blast-erosion test was smaller than that of coatings applied by HVOF spraying only. The particles deposited in the coatings obtained by hybrid spraying were very fine. Laser irradiation to the HVOF flame improve the adhesion strength between particles and the deposition of fine carbide particles in the coating. It was considered that mechanism of coating strengthening in hybrid spraying was resulted from strengthening of cohesiveness by heating effect and decreasing of porosity by flattening effect according to observation results of Ni splats sprayed by hybrid spraying method.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2005-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75233890","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

Correlation of Inflight Particle Parameters and Properties of HVOF Sprayed Cermet Coatings 飞行颗粒参数与HVOF喷涂陶瓷涂层性能的关系

热喷涂技术 Pub Date : 2005-05-02 DOI: 10.31399/asm.cp.itsc2005p0652

B. Wielage, A. Wank, C. Rupprecht, A. Wank

{"title":"Correlation of Inflight Particle Parameters and Properties of HVOF Sprayed Cermet Coatings","authors":"B. Wielage, A. Wank, C. Rupprecht, A. Wank","doi":"10.31399/asm.cp.itsc2005p0652","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2005p0652","url":null,"abstract":"\u0000 HVOF sprayed cermet coatings are used for wear protection in numerous application fields. Most feedstock powders can be processed successfully with different spraying guns but optimized parameters for high quality coating production cannot be transferred directly. Besides substrate temperature only particle velocity and temperature inflight and at impact on the substrate determine the resultant coating properties. Two typical HVOF powders, WC/Co 88/12 and Cr3C2/Ni20Cr 75/25, are sprayed using the kerosene fuel system GTV K2 and particle parameters are recorded just prior to impact on the substrate with the passive diagnostic tool Spray Watch. Detailed correlation of particle parameters and the coating properties porosity and micro hardness as well as deposition efficiency is worked out in order to deduce particle parameter ranges providing coatings with defined optimum properties. The transferability to another kerosene fuel HVOF spraying gun, Tafa JP5000, is tested. It is also shown that effects like wear of the nozzle can be detected by use of the Spray Watch. Secondary correlation of particle parameters and machine settings is carried out to build a base for straight forward closed-loop control of the HVOF spraying process applying process diagnostics","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2005-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74919251","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

Study of Ni/Al2O3 Deposition on Metallic Surface using RF Plasma Process 射频等离子体沉积Ni/Al2O3金属表面的研究

热喷涂技术 Pub Date : 2005-05-02 DOI: 10.31399/asm.cp.itsc2005p0545

L. Oukacine, F. Gitzhofer, N. Abatzoglou, D. Gravelle

{"title":"Study of Ni/Al2O3 Deposition on Metallic Surface using RF Plasma Process","authors":"L. Oukacine, F. Gitzhofer, N. Abatzoglou, D. Gravelle","doi":"10.31399/asm.cp.itsc2005p0545","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2005p0545","url":null,"abstract":"\u0000 This work is aimed at acquiring knowledge on successive deposition of alumina and nickel coatings on a metallic substrate using an RF plasma torch. The composition and morphology of various Ni/Al2O3 steam reforming catalysts, prepared by plasma spraying of precursor nickel suspensions, are studied in this work. As Ni/γ-Al2O3 is a well known reforming catalyst it was decided to study the deposition of a particular catalytic formulation on a metallic substrate. The purpose of this study was to find the means of building 2D monolithic catalysts by plasma deposition. Since 2D monolithic catalysts are non-porous, their specific areas available for hosting the catalytic reactions are low. Thus, It is essential to have very good dispersion of the active catalytic sites. Such dispersion is only possible only if the deposit can take place at the nanometer scale. The suspension plasma spraying is assessed for its ability to produce such structures. This method permits the formation of nanocrystalline structures within a few seconds. The main difficulty is the control of the various spraying parameters in order to obtain satisfactory deposition. The Ni/γ-Al2O3 catalysts so obtained are characterized by scanning electron microscopy, field electron microscopy and X-Ray diffraction.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2005-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72931406","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

Spray Forming Titanium Alloys using the Cold Spray Process 用冷喷涂工艺喷涂成形钛合金

热喷涂技术 Pub Date : 2005-05-02 DOI: 10.31399/asm.cp.itsc2005p0199

R. Blose

{"title":"Spray Forming Titanium Alloys using the Cold Spray Process","authors":"R. Blose","doi":"10.31399/asm.cp.itsc2005p0199","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2005p0199","url":null,"abstract":"\u0000 Development of new, low-cost methods for spraying near net shapes of Titanium and Titanium alloys is critical for many industries and applications. Direct fabrication technologies would have an impact on many industries because of the potential to quickly manufacture complex parts or additive features with minimal waste. However, currently used high temperature spray technologies (Lasform, thermal spray methods) involve melting and solidification. Each new layer starts out molten, then solidifies, and must eventually cool to room temperature. This report presents results of feasibility tests for development of a new method of direct fabrication of Ti alloy parts at near-net shapes (nns) using the Cold Spray process (CSP). Several Ti-6Al-4V powders including gas atomized, plasma atomized, and hydride dehydride were tested in these experiments. Feedstock powders were characterized for particle size distribution, morphology, chemical composition, hardness, and deposition efficiency. Coatings in thicknesses of 2 mm were sprayed for evaluation of microstructure, hardness, and porosity. Thick rectangular prisms (10 mm) were sprayed for machining tensile specimens. The material properties of as sprayed and post treated coatings by heat-treating and hot isostatic pressing (HIPing) on material properties was studied. Analysis showed that after HIPing the density of sprayed Ti-6Al-4V coupons is near 100% and material properties met or exceed those of wrought material.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2005-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75339441","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: 14

High Crystallinity Degree Hydroxyapatite Coatings using HVOF Spraying HVOF喷涂高结晶度羟基磷灰石涂层

热喷涂技术 Pub Date : 2005-05-02 DOI: 10.31399/asm.cp.itsc2005p1219

J. Fernández, J. Guilemany, M. Gaona

引用次数: 1