Factors of Nozzle Design Affecting on Supersonic Flow in Cold Spray Process

2006 ◽  
Vol 510-511 ◽  
pp. 1046-1049 ◽  
Author(s):  
Sung Hwan Jang ◽  
Sung Han Park ◽  
Jeong Whan Han ◽  
Chang Hee Lee ◽  
Hyung Jun Kim
Keyword(s):  
Cold Spray ◽  
Surface Modifications ◽  
Nozzle Design ◽  
Nozzle Throat ◽  
Cold Spray Process ◽  
Metallic Particles ◽  
Spray Process ◽  
New Process ◽  
Powder Particles ◽  
Particle Velocities

The cold spray process is a relatively new process using high velocity metallic particles for surface modifications. Metallic powder particles which are injected into a converging-diverging nozzle are accelerated to supersonic velocities. In this study effects of nozzle design such as diameter of nozzle throat and length of converging and diverging part of the nozzle on gas and particle velocities developed after the nozzle exit are investigated.

Effect of Curvature on Gas-Particle Flow in Converging and Diverging Supersonic Nozzle

2007 ◽  
Vol 124-126 ◽  
pp. 1697-1700 ◽  
Author(s):  
Sung Han Park ◽  
Jeong Whan Han ◽  
Chang Hee Lee ◽  
Hyung Jun Kim
Keyword(s):  
Critical Radius ◽  
Supersonic Nozzle ◽  
Surface Modifications ◽  
Particle Flow ◽  
Radius Of Curvature ◽  
Cold Spray Process ◽  
Metallic Particles ◽  
Spray Process ◽  
New Process ◽  
Powder Particles

A cold spray process is a relatively new process using high velocity metallic particles for surface modifications. Metallic powder particles which are injected into a converging-diverging nozzle are accelerated to supersonic velocities. In this study a comparative study was performed to figure out the effect of curvature on gas and particle flow in converging-diverging nozzle. And, the critical radius of curvature in converging and diverging section of nozzle and the behavior of the gas and particle flow were determined and calculated, respectively.

Bio-Mechanical Compatibility Assessment of Titanium-Nickel Alloy Fabricated Using Cold Spray Process

2015 ◽  
Vol 828-829 ◽  
pp. 351-356
Author(s):  
Agripa Hamweendo ◽  
Lebogang Moloisane ◽  
Ionel Botef
Keyword(s):  
Cold Spray ◽  
Tini Alloy ◽  
Biomedical Implants ◽  
Promising Alternative ◽  
Cold Spray Process ◽  
Spray Process ◽  
New Process ◽  
Titanium Nickel ◽  
Near Net Shape ◽  
Mechanical Compatibility

This paper presents the bio-mechanical compatibility assessment of Titanium-Nickel (TiNi) alloy fabricated using cold spray (CS) process. This research creates opportunity for meeting the increased demand for biomedical implants in orthopedic surgeries brought by sport and traffic related bone injuries. Due to their exceptional properties, TiNi alloys are promising alternative biomedical materials to the traditional Ti6Al4V alloys. Studies show that the conventional methods for producing TiNi alloys have several challenges. As a contribution towards resolving this problem, this paper studied the bio-mechanical properties of Ti and TiNi structures fabricated using CS process. The results of this study show that the porosity, incipient Young’s modulus, and tensile strength of TiNi and Ti coatings are close to the required values for the biomedical implants. Consequently, this research demonstrates that porous TiNi and Ti structures fabricated by CS are possible candidates for biomedical implants and that CS could be a new process for fabricating near-net shape bio-mechanical compatible materials.

Factors of Nozzle Design Affecting on Supersonic Flow in Cold Spray Process

2006 ◽  
pp. 1046-1049
Author(s):  
Sung Hwan Jang ◽  
Sung Han Park ◽  
J.W. Han ◽  
Chang Hee Lee ◽  
Hyung Jun Kim
Keyword(s):  
Supersonic Flow ◽  
Cold Spray ◽  
Nozzle Design ◽  
Cold Spray Process ◽  
Spray Process

scholarly journals SPH modeling of adhesion in fast dynamics: Application to the Cold Spray process

2016 ◽  
Vol 344 (4-5) ◽  
pp. 211-224 ◽  
Author(s):  
Paul Profizi ◽  
Alain Combescure ◽  
Kahuziro Ogawa
Keyword(s):  
Cold Spray ◽  
Cold Spray Process ◽  
Spray Process

Significant influence of carrier gas temperature during the cold spray process

2014 ◽  
Vol 30 (6) ◽  
pp. 443-450 ◽  
Author(s):  
S. Yin ◽  
X. Suo ◽  
H. Liao ◽  
Z. Guo ◽  
X. Wang
Keyword(s):  
Cold Spray ◽  
Significant Influence ◽  
Gas Temperature ◽  
Cold Spray Process ◽  
Carrier Gas ◽  
Spray Process

scholarly journals Deposition of Copper Fine Particle by Cold Spray Process

2009 ◽  
Vol 50 (6) ◽  
pp. 1482-1488 ◽  
Author(s):  
Masahiro Fukumoto ◽  
Hiroki Terada ◽  
Masahiro Mashiko ◽  
Kazunori Sato ◽  
Motohiro Yamada ◽  
...  
Keyword(s):  
Cold Spray ◽  
Fine Particle ◽  
Cold Spray Process ◽  
Spray Process

Multi-walled carbon nanotube-reinforced copper nanocomposite coating fabricated by low-pressure cold spray process

2012 ◽  
Vol 206 (16) ◽  
pp. 3488-3494 ◽  
Author(s):  
Seungchan Cho ◽  
Kenta Takagi ◽  
Hansang Kwon ◽  
Dowon Seo ◽  
Kazuhiro Ogawa ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cold Spray ◽  
Low Pressure ◽  
Nanocomposite Coating ◽  
Cold Spray Process ◽  
Spray Process ◽  
Multi Walled Carbon Nanotube

scholarly journals Microstructure, Mechanical Properties and Corrosion Behavior of the Aluminum Alloy Components Repaired by Cold Spray with Al-Based Powders

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1633
Author(s):  
Zhiyi Zhang ◽  
Xiaoguang Sun ◽  
Shiming Huang ◽  
Xiaohui Han ◽  
Ping Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Cold Spray ◽  
Corrosion Behavior ◽  
High Speed ◽  
Neutral Salt ◽  
Cold Spray Process ◽  
Spray Process ◽  
High Speed Trains ◽  
Mechanical Properties And Corrosion

Aluminum alloy components of high-speed trains have a great risk of being corroded by various corrosive medium due to extremely complex atmospheric environments. This will bring out huge losses and reduce the safety and stability of trains. In order to solve the problem, cold spray process was used for repairing the damage of the aluminum alloy components with Al-based powders. Microstructure, mechanical properties and corrosion behavior were studied. The results indicated that there were very few pores and cracks in the repaired areas after repairing. The average microhardness of the repaired areas was 54.5 HV ± 3.4 HV, and the tensile strength of the repaired samples was 160.4 MPa. After neutral salt spray tests for 1000 h, the rate of mass loss of the samples repaired by cold spray was lower than that of 6A01 aluminum alloy. The electrochemical test results showed that the repaired areas had a higher open circuit potential than 6A01 aluminum alloy. As a result, the repaired areas such as the anode protected its nearby substrate. The samples repaired by cold spray exhibited better corrosion than 6A01 aluminum alloy. Cold spray process and Al-based powders are applicable for repairing the aluminum alloy components of high-speed trains.

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