Obtaining a Coating with Increased Adhesive and Cohesive Strength for High-Speed Flame Spraying for a Pair of Materials Coating-Substrate Metal–Metal

2021 ◽  
pp. 533-542
Author(s):  
Etibar Balaev ◽  
Vladimir Eliseev
Keyword(s):  
High Speed ◽  
Cohesive Strength ◽  
Flame Spraying ◽  
Substrate Metal ◽  
Metal Metal

The Research of Spraying SiC/Cu Electronic Packaging Composites

2011 ◽  
Vol 284-286 ◽  
pp. 620-623
Author(s):  
Ming Hu ◽  
Jing Gao ◽  
Yun Long Zhang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Process Parameters ◽  
Electronic Packaging ◽  
High Speed ◽  
Volume Fraction ◽  
Flame Spraying ◽  
Packaging Materials ◽  
Excellent Performance ◽  
Chemical Plating

The SiC/Cu electronic packaging composites with excellent performance were successfully prepared by the chemical plating copper on the surface of SiC powders and high-speed flame spraying technology. The results showed that the homogeneous dense coated layers can be obtained on the surface of SiC powder by optimizing process parameters. The volume fraction of SiC powders in the composites could significantly increase and figure was beyond 55vol% after spraying Copper. The SiC and Cu were the main phases in the spraying SiC/Cu electronic packaging composite, at the same time Cu2O can be tested as the trace phase. The interface combination properties of SiC/Cu in the hot-pressed samples can obviously improve. The thermal expansion coefficient and thermal conductivity of SiC/Cu electronic packaging composite basic can satisfy the requirements for electronic packaging materials.

Fault Detection for Roller Bearing with Vibration Analysis and Information Fusion in Sorting Machine Induction

2014 ◽  
Vol 494-495 ◽  
pp. 805-808
Author(s):  
Wei Chen ◽  
Qing Xuan Jia ◽  
Han Xu Sun ◽  
Si Cheng Nian
Keyword(s):  
Information Fusion ◽  
Vibration Analysis ◽  
High Speed ◽  
Roller Bearing ◽  
Vibration Signal ◽  
Operating Conditions ◽  
Independent Evidence ◽  
Sorting Machine ◽  
Metal Metal ◽  
Output Information

Due to continuous metal-metal contacts in heavy and high-speed operating conditions, sorting machine inductions roller bearing easily occurs malfunctions. Therefore, its crucial to make incipient fault diagnosis. This paper presents a novel diagnosis algorithm using vibration analysis and information fusion. In the algorithm, vibration signal for roller bearing is firstly analyzed. Then extracted fault features are used as input eigenvector of constructed neural network classifier. In order to improve diagnosis accuracy, take output information of each single classifier as independent evidence, and aggregate them using improved Dempsters combination rule. Experiment results show that proposed algorithm has high accuracy of 99.5%.

scholarly journals Research on Jet Flame Extinguishing Process

2014 ◽  
Vol 635-637 ◽  
pp. 80-83
Author(s):  
Wen Liang Guo ◽  
Zheng Guo
Keyword(s):  
Heat Transfer ◽  
High Speed ◽  
Ccd Camera ◽  
Flame Spraying ◽  
Experimental Measurements ◽  
Free Jets ◽  
Jet Flame ◽  
Free Jet ◽  
Mass And Heat Transfer ◽  
Multi Phase

The flame used in combustion flame spraying is typical of a high-temperature free jet. The flow fields of free jets are multi-phase flows that couple the mass and heat transfer. This work develops an analytical method to describe free combustion spray jets. The aim of the research is to develop a fully understanding of the characteristics of free-flame jets. Experimental measurements were carried by a unique high-speed continuous CCD camera.

Nozzle Spraying Model of Combustion Thermal Spray

2013 ◽  
Vol 655-657 ◽  
pp. 211-217 ◽  
Author(s):  
Wen Liang Guo ◽  
Zheng Guo
Keyword(s):  
Turbulent Flows ◽  
High Speed ◽  
Numerical Solutions ◽  
Substrate Surface ◽  
Ccd Camera ◽  
Nozzle Geometry ◽  
Flame Spraying ◽  
Free Jet ◽  
Powder Particles ◽  
Mixing Length Theory

The flame used in combustion flame spraying is typical of a high-temperature free jet. The flow fields of free jets are multi-phase flows that couple the mass and heat transfer. The analytical and numerical solutions to turbulent flows are engineering approximations. This work uses Prandtle’s mixing-length theory to describe the flame spreading of free combustion spray jet and uses nozzle spray model to describe the distribution of the powder particles sprayed from powder nozzle to the substrate surface. The nozzle geometry and the parameters determine the distribution of the powder particles. The nozzle spray model has the same physical meaning with the jet spreading angle. Experimental measurements were carried by a high-speed CCD camera.

scholarly journals Structural and technological formation of surface nanostructured Ti-Ni-Mo layers by high-speed gas-flame spraying

2015 ◽  
Vol 33 ◽  
pp. 03002
Author(s):  
Zhesfina Blednova ◽  
Peter Rusinov ◽  
Vladimir Shishkalov
Keyword(s):  
High Speed ◽  
Flame Spraying ◽  
Gas Flame

Rare-earth transition-metal intermetallic compounds produced via self-propagating, high-temperature synthesis

2010 ◽  
Vol 25 (4) ◽  
pp. 718-727 ◽  
Author(s):  
Joel P. McDonald ◽  
Mark A. Rodriguez ◽  
Eric D. Jones ◽  
David P. Adams
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Transition Metal ◽  
Intermetallic Compounds ◽  
High Speed ◽  
High Speed Photography ◽  
Material System ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Metal Metal

Several binary intermetallic compounds—each containing a rare-earth (RE) element paired with a transition metal (TM)—were prepared by self-propagating, high-temperature synthesis (SHS). Thin multilayers, composed of alternating Sc or Y (RE element) and Ag, Cu, or Au (TM), were first deposited by direct current magnetron sputtering. Once the initially distinct layers were stimulated and caused to mix, exothermic reactions propagated to completion. X-ray diffraction revealed that Sc/Au, Sc/Cu, Y/Au, and Y/Cu multilayers react in vacuum to form single-phase, cubic B2 structures. Multilayers containing Ag and a RE metal formed cubic B2 (RE)Ag and a minority (RE)Ag2 phase. The influence of an oxygen-containing environment on the reaction dynamics and the formation of phase were investigated, providing evidence for the participation of secondary combustion reactions during metal-metal SHS. High-speed photography demonstrated reaction propagation speeds that ranged from 0.1–40.0 m/s (dependent on material system and foil design). Both steady and spin-like reaction modes were observed.

Investigation of a wear-and corrosion-resistant coating of the TiCN−Ni-alloy system, obtained by high-speed gas-flame spraying

1999 ◽  
Vol 38 (7-8) ◽  
pp. 358-361 ◽  
Author(s):  
I. A. Podchernyaeva ◽  
V. M. Kisel’ ◽  
Y. I. Evdokimenko ◽  
V. A. Lavrenko ◽  
V. V. Pasichnyi
Keyword(s):  
High Speed ◽  
Alloy System ◽  
Flame Spraying ◽  
Corrosion Resistant ◽  
Resistant Coating ◽  
Wear And Corrosion ◽  
Ni Alloy ◽  
Gas Flame ◽  
Corrosion Resistant Coating

scholarly journals Theoretical Justification of Coating Adhesion during Gas-Thermal Spraying

2022 ◽  
Author(s):  
Y.A. Kuznetsov
Keyword(s):  
High Speed ◽  
Thermal Spraying ◽  
Flame Spraying ◽  
Theoretical Justification ◽  
Coating Adhesion ◽  
Theoretical Substantiation ◽  
Modern Methods ◽  
Machine Parts

Abstract.The article provides a brief overview of modern methods of thermal spraying. Particular attention is paid to high-speed flame spraying. The theoretical substantiation of the adhesion of coatings formed on machine parts using the methods of thermal spraying is presented.

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