热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0522

K. Yuan, S. Geng

引用次数: 0

Effects of Composition on Antibacterial and Antiviral Properties of Suspension Plasma-Sprayed Hydroxyapatite/Titania Coating 悬浮等离子喷涂羟基磷灰石/二氧化钛涂层组成对其抗菌抗病毒性能的影响

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0585

M. M. Abir, Y. Otsuka, Y. Miyashita

引用次数: 0

Microstructure of Atmospheric Plasma Sprayed (Al,Cr)2O3-TiO2 Coatings from Blends 大气等离子喷涂(Al,Cr)2O3-TiO2共混涂层的微观结构

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0758

M. Grimm, R. Drehmann, T. Lampke, S. Conze, L. Berger

引用次数: 1

Influence of Ultrasonic Sealing Treatment with Aluminum Phosphate on Properties of Al2O3-TiO2 Plasma Sprayed Ceramic Coating 磷酸铝超声密封处理对Al2O3-TiO2等离子喷涂陶瓷涂层性能的影响

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0322

T. N. Văn, T. Nguyen, P. Thi, Ha Pham Thi, Ly Pham Thi, Cuong Ly Quoc, Thuy Hoang Thi Bich, D. Vũ, Q. L. Thu

引用次数: 0

Metallurgical Approach for the Development of Heat Treatment Applied to 316L Stainless Steel Cold Spray Coatings 316L不锈钢冷喷涂涂层热处理的冶金方法研究

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0177

Laury-Hann Brassart, A. Gourgues-Lorenzon, J. Besson, F. Delloro, D. Haboussa, G. Rolland

{"title":"Metallurgical Approach for the Development of Heat Treatment Applied to 316L Stainless Steel Cold Spray Coatings","authors":"Laury-Hann Brassart, A. Gourgues-Lorenzon, J. Besson, F. Delloro, D. Haboussa, G. Rolland","doi":"10.31399/asm.cp.itsc2021p0177","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0177","url":null,"abstract":"\u0000 Industries developing cold-spray processes aim at producing dense and resistant coatings. Controlling microstructure and inter-particular fracture characteristics of sprayed coatings is essential to improve their properties. To do so; post-spraying heat treatment is a promising approach. This work addresses the development of such heat treatments and focuses on the analysis of recovery and recrystallization. Different heat treatment parameters were explored; namely; holding temperature and time; heating rate; and heating method. This approach revealed a competition between recrystallization and other microstructural evolution mechanisms; such as precipitation and porosity coalescence. An optimized heat treatment; allowing microstructural softening and adequate mechanical properties; was sought after. First; differential scanning calorimetry measurements applied to as-sprayed coatings enabled to identify recovery and recrystallization temperature ranges. Then; a variety of heat treatments was applied; involving long-time isothermal holdings as well as shorter cycles. Microstructure analysis and hardness measurements allowed making a first selection of treatment conditions.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77580676","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

Qualification of the Low-Pressure Cold Gas Spraying for the Additive Manufacturing of Copper-Nickel-Diamond Grinding Wheels 铜镍金刚石砂轮增材制造低压冷喷涂工艺鉴定

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0590

W. Tillmann, J. Zajączkowski, I. Baumann, C. Schaak, D. Biermann, M. Kipp

{"title":"Qualification of the Low-Pressure Cold Gas Spraying for the Additive Manufacturing of Copper-Nickel-Diamond Grinding Wheels","authors":"W. Tillmann, J. Zajączkowski, I. Baumann, C. Schaak, D. Biermann, M. Kipp","doi":"10.31399/ASM.CP.ITSC2021P0590","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0590","url":null,"abstract":"\u0000 Grinding wheels are usually manufactured by powder metallurgical processes, i.e. by moulding and sintering. Since this requires the production of special moulds and the sintering is typically carried out in a continuous furnace, this process is time-consuming and cost-intensive. Therefore, it is only worthwhile for medium and large batches. Another influencing factor of the powder metallurgical process route is the high thermal load during the sintering process. Due to their high thermal sensitivity, superabrasives such as diamond or cubic boron nitride are very difficult to process in this way. In this study, a novel and innovative approach is presented, in which superabrasive grinding wheels are manufactured by thermal spraying. For this purpose, flat samples as well as a grinding wheel body were coated by low-pressure (LP) cold gas spraying with a blend of a commercial Cu-Al2O3 cold gas spraying powder and nickel-coated diamonds (8-12 μm). The coatings were examined metallographically in terms of their composition. Afterwards, the grinding wheel was conditioned for the grinding application and the topography was evaluated. This novel process route offers great flexibility in the combination of binder and hard material as well as a costeffective single-part and small-batch production.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82914986","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

Mechanical and Microstructural Properties of Post-Treated Zn4Al Sprayed Coatings Using Twin Wire Arc Spraying 双线电弧喷涂后处理Zn4Al涂层的力学和显微组织性能

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0750

W. Tillmann, M. Abdulgader, L. Hagen, D. Biermann, A. Timmermann, A. Wirtz, F. Walther, M. Milz

引用次数: 4

Effect of Pre-Treatment on Substrates for Metal Coatings Fabricated by Low Pressure Cold Spray Technique 预处理对低压冷喷涂金属涂层基底的影响

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0203

Hiroki Saito, Hiroaki Ebihara, Y. Ichikawa, K. Ogawa

{"title":"Effect of Pre-Treatment on Substrates for Metal Coatings Fabricated by Low Pressure Cold Spray Technique","authors":"Hiroki Saito, Hiroaki Ebihara, Y. Ichikawa, K. Ogawa","doi":"10.31399/asm.cp.itsc2021p0203","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0203","url":null,"abstract":"\u0000 Low pressure cold spraying is an attractive technique for onsite metal coating fabrication due to its compactness and portability. However; the bonding strength of the coating prepared by low pressure cold spraying is generally low; which restricts the further applications in engineering and industrial fields. To improve the bonding strength; pre-treatment on substrate surface can be an effective procedure. In this study; a low-temperature plasma treatment was applied to a pretreatment technique; and the effect of the treatment on particle bonding was compared with that of a laser treatment. Copper coatings on aluminum and copper substrates were selected and studied as basic metal materials. The SEM observation results show that the particle adhesion rate significantly increases by the laser and plasma treatments; due to the removal of the native oxide films on the substrates. The particle bonding on the plasma-treated substrate reveals better interfacial adhesion with less gap compared with the laser-treated one. The pre-treatment by low-temperature plasma can be an attractive technique to assist the cold spraying process due to the oxide removal ability and no thermal effect which can apply a wide range of materials.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91235595","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

Mechanical and Fatigue Properties of Diamond Reinforced Cu and Al Metal Matrix Composites Prepared by Cold Spray 冷喷涂金刚石增强Cu和Al金属基复合材料的力学和疲劳性能

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/asm.cp.itsc2021p0131

O. Kovárík, J. Cizek, Shuo Yin, R. Lupoi, M. Janovská, J. Čapek, J. Siegl, T. Chráska

{"title":"Mechanical and Fatigue Properties of Diamond Reinforced Cu and Al Metal Matrix Composites Prepared by Cold Spray","authors":"O. Kovárík, J. Cizek, Shuo Yin, R. Lupoi, M. Janovská, J. Čapek, J. Siegl, T. Chráska","doi":"10.31399/asm.cp.itsc2021p0131","DOIUrl":"https://doi.org/10.31399/asm.cp.itsc2021p0131","url":null,"abstract":"\u0000 Diamond-reinforced composites prepared by cold spray are emerging materials simultaneously featuring outstanding thermal conductivity and wear resistance. Their mechanical and fatigue properties relevant to perspective engineering applications were investigated using miniature bending specimens. Cold sprayed specimens with two different mass concentrations of diamond 20% and 50% in two metallic matrices (Al – lighter than diamond; Cu – heavier than diamond) were compared with the respective pure metal deposits. These pure metal coatings showed rather limited ductility. The diamond addition slightly improved ductility and fracture toughness of the Cu-based composites; having a small effect also on the fatigue crack growth resistance. In case of the Al composites; the ductility as well as fatigue crack growth resistance and fracture toughness have improved significantly. The static and fatigue failure mechanisms were fractographically analyzed and related to the microstructure of the coatings; observing that particle decohesion is the primary failure mechanism for both static and fatigue fracture.","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":"88986278","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 Suspension-Based Plasma and HVOF Spray TiO2 Coatings 悬浮基等离子体和HVOF喷涂TiO2涂层的研究

热喷涂技术 Pub Date : 2021-06-15 DOI: 10.31399/ASM.CP.ITSC2021P0489

G. Mittal, A. Sabard, F. Fanicchia, I. Bhamji, S. Paul

{"title":"Development of Suspension-Based Plasma and HVOF Spray TiO2 Coatings","authors":"G. Mittal, A. Sabard, F. Fanicchia, I. Bhamji, S. Paul","doi":"10.31399/ASM.CP.ITSC2021P0489","DOIUrl":"https://doi.org/10.31399/ASM.CP.ITSC2021P0489","url":null,"abstract":"\u0000 Thermal spray is a versatile process that produces high-quality coatings possessing diverse properties such as superhydrophobicity, wear resistance, corrosion resistance, dielectric properties etc. Conventionally, powder feedstock is used in thermal spray, and this process is commercialised in numerous industrial processes. However, liquid feedstock based thermal spray is still in its development phases, due to limited information available on process parameters. Various parameters such as plasma/fuel gas, plasma current, feedrate, feeding angle, type of feedstock (suspension or solution precursor), feedstock concentration, feedstock viscosity, solvent, etc. significantly influence the thermal and kinetic energy exchange between plasma/flame and feedstock material. Suspension plasma spray (SPS) and suspension high velocity oxy-fuel spray (SHVOF), once optimised, can give rise to coatings with multiscale features. An in-depth understanding of the complex interaction between feedstock solution/suspension chemical-physical properties and plasma/flame jet characteristics is essential to understand its specific impact on coating properties and their application. This paper presents comparisons between two different TiO2 coatings, deposited by SPS and S-HVOF, and obtained by varying some of the fundamental spray deposition parameters. The surface morphology and cross-sections of the as-deposited coatings were compared through SEM/EDX. Further, surface wetting properties were analysed through measuring the static and dynamic contact angles.","PeriodicalId":70745,"journal":{"name":"热喷涂技术","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76757816","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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