Development of fabrication technology cold spraying for innovative coating by means of collision of high velocity solid particles View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2006-2007

FUNDING AMOUNT

14940000 JPY

ABSTRACT

Cold spraying has developed as a new technology to perform a high quality coating due to its lower heating of the powder. Relatively soft metals have been effectively coated by the process and superior coating properties compared with conventional coatings thermally sprayed have been reported. To establish the high quality coating by the process, utilization of fine particle may be effective. Typical identity of the process compared to the ordinal thermal spray process can be given by the coating formation unit as a solid particle, which collided onto the substrate surface or prior deposited coating surface at a quite higher velocity. To attain such a high collision velocity of the particle, especially for the fine particle around few pm in diameter, optimization in nozzle design still has to be performed. On the other hand, in a practical cold spraying, it has been indicated that the nominal velocity of the particle differ from net collision velocity due to bow shock effect on the substrate surface. To realize a high collision velocity of the particle actually, especially in fine particle, bow shock problem onto the substrate surface has to be overcoine.To improve the deposition efficiency of copper fine particles, around 5 pm in diameter, in cold spray process onto metallic substrate, optimization in nozzle design was performed by numerical simulation. Particles velocity reached up to 585 m/s under the optimum conditions by using self-designed nozzle based on the simulation results. In the spraying of copper particle onto normal steel substrate, unique lamellar-like microstructure was formed near the interface region in the steel substrate. Work hardening may be induced significantly due to the higher velocity of the particles attained. Moreover, to reduce the bow shock effect on the substrate surface region in cold spray process, special nozzle was newly designed. The deposition efficiency, Vickers hardness and coating adhesion strength increased significantly especially in the case of both fine particle and higher pressure level of the working gas, while nominal particle velocity decreased with the special nozzle. Numerical simulation indicated that the pressure levels on the substrate surface decreased effectively in the nozzle newly designed. In the observation of sprayed individual particles onto the substrate, extended metal jet was recognized at the splat's periphery when the particle was sprayed by the special nozzle. The results indicate that the decrease of particles velocity due to bow shock was suppressed effectively in the special nozzle as compared with conventional one More... »

URL

https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360352

Related SciGraph Publications

JSON-LD is the canonical representation for SciGraph data.

TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT

[
  {
    "@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json", 
    "about": [
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/2209", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "type": "DefinedTerm"
      }, 
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/2209", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "type": "DefinedTerm"
      }, 
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/2209", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "type": "DefinedTerm"
      }
    ], 
    "amount": {
      "currency": "JPY", 
      "type": "MonetaryAmount", 
      "value": "14940000"
    }, 
    "description": "Cold spraying has developed as a new technology to perform a high quality coating due to its lower heating of the powder. Relatively soft metals have been effectively coated by the process and superior coating properties compared with conventional coatings thermally sprayed have been reported. To establish the high quality coating by the process, utilization of fine particle may be effective. Typical identity of the process compared to the ordinal thermal spray process can be given by the coating formation unit as a solid particle, which collided onto the substrate surface or prior deposited coating surface at a quite higher velocity. To attain such a high collision velocity of the particle, especially for the fine particle around few pm in diameter, optimization in nozzle design still has to be performed. On the other hand, in a practical cold spraying, it has been indicated that the nominal velocity of the particle differ from net collision velocity due to bow shock effect on the substrate surface. To realize a high collision velocity of the particle actually, especially in fine particle, bow shock problem onto the substrate surface has to be overcoine.To improve the deposition efficiency of copper fine particles, around 5 pm in diameter, in cold spray process onto metallic substrate, optimization in nozzle design was performed by numerical simulation. Particles velocity reached up to 585 m/s under the optimum conditions by using self-designed nozzle based on the simulation results. In the spraying of copper particle onto normal steel substrate, unique lamellar-like microstructure was formed near the interface region in the steel substrate. Work hardening may be induced significantly due to the higher velocity of the particles attained. Moreover, to reduce the bow shock effect on the substrate surface region in cold spray process, special nozzle was newly designed. The deposition efficiency, Vickers hardness and coating adhesion strength increased significantly especially in the case of both fine particle and higher pressure level of the working gas, while nominal particle velocity decreased with the special nozzle. Numerical simulation indicated that the pressure levels on the substrate surface decreased effectively in the nozzle newly designed. In the observation of sprayed individual particles onto the substrate, extended metal jet was recognized at the splat's periphery when the particle was sprayed by the special nozzle. The results indicate that the decrease of particles velocity due to bow shock was suppressed effectively in the special nozzle as compared with conventional one", 
    "endDate": "2007-12-31T00:00:00Z", 
    "funder": {
      "id": "https://www.grid.ac/institutes/grid.54432.34", 
      "type": "Organization"
    }, 
    "id": "sg:grant.5950374", 
    "identifier": [
      {
        "name": "dimensions_id", 
        "type": "PropertyValue", 
        "value": [
          "5950374"
        ]
      }, 
      {
        "name": "kaken_id", 
        "type": "PropertyValue", 
        "value": [
          "18360352"
        ]
      }
    ], 
    "inLanguage": [
      "en"
    ], 
    "keywords": [
      "results", 
      "low heating", 
      "splat periphery", 
      "copper", 
      "metallic substrates", 
      "pm", 
      "solid particles", 
      "means", 
      "hardening", 
      "numerical simulations", 
      "bow shock effect", 
      "new technologies", 
      "overcoine", 
      "net collision velocity", 
      "nominal particle velocity", 
      "diameter", 
      "coating surface", 
      "development", 
      "high collision velocities", 
      "nominal velocity", 
      "self", 
      "spraying", 
      "powder", 
      "unique lamellar-like microstructure", 
      "typical identity", 
      "high velocity", 
      "collision", 
      "substrate surface", 
      "utilization", 
      "Vickers hardness", 
      "innovative coatings", 
      "nozzle design", 
      "nozzle", 
      "interface region", 
      "high quality coatings", 
      "cold spraying", 
      "cold spray process", 
      "shock problem", 
      "particle velocity", 
      "conventional coatings", 
      "optimum conditions", 
      "optimization", 
      "metal jet", 
      "cases", 
      "copper particles", 
      "higher pressure levels", 
      "shock", 
      "deposition efficiency", 
      "fabrication technology", 
      "soft metals", 
      "pressure levels", 
      "practical cold spraying", 
      "superior coating properties", 
      "other hand", 
      "fine particles", 
      "particles", 
      "decrease", 
      "ordinal thermal spray process", 
      "gas", 
      "process", 
      "simulation results", 
      "substrate surface region", 
      "steel substrate", 
      "individual particles", 
      "few pm", 
      "observations", 
      "coating formation unit", 
      "normal steel substrate", 
      "substrate", 
      "coating adhesion strength", 
      "shock effects", 
      "special nozzle"
    ], 
    "name": "Development of fabrication technology cold spraying for innovative coating by means of collision of high velocity solid particles", 
    "recipient": [
      {
        "id": "https://www.grid.ac/institutes/grid.412804.b", 
        "type": "Organization"
      }
    ], 
    "sameAs": [
      "https://app.dimensions.ai/details/grant/grant.5950374"
    ], 
    "sdDataset": "grants", 
    "sdDatePublished": "2019-03-07T11:43", 
    "sdLicense": "https://scigraph.springernature.com/explorer/license/", 
    "sdPublisher": {
      "name": "Springer Nature - SN SciGraph project", 
      "type": "Organization"
    }, 
    "sdSource": "s3://com.uberresearch.data.processor/core_data/20181219_192338/projects/base/kaken_projects_21.xml.gz", 
    "startDate": "2006-01-01T00:00:00Z", 
    "type": "MonetaryGrant", 
    "url": "https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360352"
  }
]
 

Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/grant.5950374'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/grant.5950374'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/grant.5950374'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/grant.5950374'


 

This table displays all metadata directly associated to this object as RDF triples.

106 TRIPLES      19 PREDICATES      92 URIs      85 LITERALS      4 BLANK NODES

Subject Predicate Object
1 sg:grant.5950374 schema:about anzsrc-for:2209
2 schema:amount N4d3338bac861496c8ded5cc7fcc03c97
3 schema:description Cold spraying has developed as a new technology to perform a high quality coating due to its lower heating of the powder. Relatively soft metals have been effectively coated by the process and superior coating properties compared with conventional coatings thermally sprayed have been reported. To establish the high quality coating by the process, utilization of fine particle may be effective. Typical identity of the process compared to the ordinal thermal spray process can be given by the coating formation unit as a solid particle, which collided onto the substrate surface or prior deposited coating surface at a quite higher velocity. To attain such a high collision velocity of the particle, especially for the fine particle around few pm in diameter, optimization in nozzle design still has to be performed. On the other hand, in a practical cold spraying, it has been indicated that the nominal velocity of the particle differ from net collision velocity due to bow shock effect on the substrate surface. To realize a high collision velocity of the particle actually, especially in fine particle, bow shock problem onto the substrate surface has to be overcoine.To improve the deposition efficiency of copper fine particles, around 5 pm in diameter, in cold spray process onto metallic substrate, optimization in nozzle design was performed by numerical simulation. Particles velocity reached up to 585 m/s under the optimum conditions by using self-designed nozzle based on the simulation results. In the spraying of copper particle onto normal steel substrate, unique lamellar-like microstructure was formed near the interface region in the steel substrate. Work hardening may be induced significantly due to the higher velocity of the particles attained. Moreover, to reduce the bow shock effect on the substrate surface region in cold spray process, special nozzle was newly designed. The deposition efficiency, Vickers hardness and coating adhesion strength increased significantly especially in the case of both fine particle and higher pressure level of the working gas, while nominal particle velocity decreased with the special nozzle. Numerical simulation indicated that the pressure levels on the substrate surface decreased effectively in the nozzle newly designed. In the observation of sprayed individual particles onto the substrate, extended metal jet was recognized at the splat's periphery when the particle was sprayed by the special nozzle. The results indicate that the decrease of particles velocity due to bow shock was suppressed effectively in the special nozzle as compared with conventional one
4 schema:endDate 2007-12-31T00:00:00Z
5 schema:funder https://www.grid.ac/institutes/grid.54432.34
6 schema:identifier N6a5c75124dff4af193459714bb9cef8c
7 Na364abf83ced447fbecbf850297cf30c
8 schema:inLanguage en
9 schema:keywords Vickers hardness
10 bow shock effect
11 cases
12 coating adhesion strength
13 coating formation unit
14 coating surface
15 cold spray process
16 cold spraying
17 collision
18 conventional coatings
19 copper
20 copper particles
21 decrease
22 deposition efficiency
23 development
24 diameter
25 fabrication technology
26 few pm
27 fine particles
28 gas
29 hardening
30 high collision velocities
31 high quality coatings
32 high velocity
33 higher pressure levels
34 individual particles
35 innovative coatings
36 interface region
37 low heating
38 means
39 metal jet
40 metallic substrates
41 net collision velocity
42 new technologies
43 nominal particle velocity
44 nominal velocity
45 normal steel substrate
46 nozzle
47 nozzle design
48 numerical simulations
49 observations
50 optimization
51 optimum conditions
52 ordinal thermal spray process
53 other hand
54 overcoine
55 particle velocity
56 particles
57 pm
58 powder
59 practical cold spraying
60 pressure levels
61 process
62 results
63 self
64 shock
65 shock effects
66 shock problem
67 simulation results
68 soft metals
69 solid particles
70 special nozzle
71 splat periphery
72 spraying
73 steel substrate
74 substrate
75 substrate surface
76 substrate surface region
77 superior coating properties
78 typical identity
79 unique lamellar-like microstructure
80 utilization
81 schema:name Development of fabrication technology cold spraying for innovative coating by means of collision of high velocity solid particles
82 schema:recipient https://www.grid.ac/institutes/grid.412804.b
83 schema:sameAs https://app.dimensions.ai/details/grant/grant.5950374
84 schema:sdDatePublished 2019-03-07T11:43
85 schema:sdLicense https://scigraph.springernature.com/explorer/license/
86 schema:sdPublisher N980ebd0215214856934d3fab70b6ad9b
87 schema:startDate 2006-01-01T00:00:00Z
88 schema:url https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360352
89 sgo:license sg:explorer/license/
90 sgo:sdDataset grants
91 rdf:type schema:MonetaryGrant
92 N4d3338bac861496c8ded5cc7fcc03c97 schema:currency JPY
93 schema:value 14940000
94 rdf:type schema:MonetaryAmount
95 N6a5c75124dff4af193459714bb9cef8c schema:name kaken_id
96 schema:value 18360352
97 rdf:type schema:PropertyValue
98 N980ebd0215214856934d3fab70b6ad9b schema:name Springer Nature - SN SciGraph project
99 rdf:type schema:Organization
100 Na364abf83ced447fbecbf850297cf30c schema:name dimensions_id
101 schema:value 5950374
102 rdf:type schema:PropertyValue
103 anzsrc-for:2209 schema:inDefinedTermSet anzsrc-for:
104 rdf:type schema:DefinedTerm
105 https://www.grid.ac/institutes/grid.412804.b schema:Organization
106 https://www.grid.ac/institutes/grid.54432.34 schema:Organization
 




Preview window. Press ESC to close (or click here)


...