Ti and Ti-6Al-4V coatings by cold spraying and microstructure modification by heat treatment

Wen Ya Li; Choo Zhang; Xueping Guo; Jinling Xu; Chang Jiu Li; Hanlin Liao; Christian Coddet; Khiam Aik Khor

doi:10.1002/adem.200700022

Ti and Ti-6Al-4V coatings by cold spraying and microstructure modification by heat treatment

Wen Ya Li, Choo Zhang, Xueping Guo, Jinling Xu, Chang Jiu Li, Hanlin Liao, Christian Coddet, Khiam Aik Khor

Research output: Contribution to journal › Article › peer-review

100 Scopus citations

Abstract

The mictrostructure of cold sprayed Ti and Ti-6Al-4V coatings and the effect of heat treatment on coating microstructure modification was investigated. The results show that the cold sprayed Ti and Ti-6Al-4V coatings have porous structure with a high deposition efficiency. The porosities of cold sprayed Ti and Ti-6Al-4V coatings are found to be 5.4∓2.4% and 22.3∓4.7% under spray conditions. The results show that the reactions of spray particles with oxygen and the poor thermal conductivity of these materials result in a high particle interface temperature, resulting in localized melting and metallurgical bonding. Annealing at 859°C for 4 hours results in an increase in porosities of Ti and Ti-6Al-4V to coatings to 21.6∓4.6% and 29.7∓5.1% respectively, due to coalescence of incomplete interfaces and submicron pores.

Original language	English
Pages (from-to)	418-423
Number of pages	6
Journal	Advanced Engineering Materials
Volume	9
Issue number	5
DOIs	https://doi.org/10.1002/adem.200700022
State	Published - May 2007
Externally published	Yes

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@article{18ea4dc18f114bff93ca49320295b06a,

title = "Ti and Ti-6Al-4V coatings by cold spraying and microstructure modification by heat treatment",

abstract = "The mictrostructure of cold sprayed Ti and Ti-6Al-4V coatings and the effect of heat treatment on coating microstructure modification was investigated. The results show that the cold sprayed Ti and Ti-6Al-4V coatings have porous structure with a high deposition efficiency. The porosities of cold sprayed Ti and Ti-6Al-4V coatings are found to be 5.4∓2.4% and 22.3∓4.7% under spray conditions. The results show that the reactions of spray particles with oxygen and the poor thermal conductivity of these materials result in a high particle interface temperature, resulting in localized melting and metallurgical bonding. Annealing at 859°C for 4 hours results in an increase in porosities of Ti and Ti-6Al-4V to coatings to 21.6∓4.6% and 29.7∓5.1% respectively, due to coalescence of incomplete interfaces and submicron pores.",

author = "Li, {Wen Ya} and Choo Zhang and Xueping Guo and Jinling Xu and Li, {Chang Jiu} and Hanlin Liao and Christian Coddet and Khor, {Khiam Aik}",

year = "2007",

month = may,

doi = "10.1002/adem.200700022",

language = "英语",

volume = "9",

pages = "418--423",

journal = "Advanced Engineering Materials",

issn = "1438-1656",

publisher = "Wiley-VCH Verlag",

number = "5",

}

TY - JOUR

T1 - Ti and Ti-6Al-4V coatings by cold spraying and microstructure modification by heat treatment

AU - Li, Wen Ya

AU - Zhang, Choo

AU - Guo, Xueping

AU - Xu, Jinling

AU - Li, Chang Jiu

AU - Liao, Hanlin

AU - Coddet, Christian

AU - Khor, Khiam Aik

PY - 2007/5

Y1 - 2007/5

N2 - The mictrostructure of cold sprayed Ti and Ti-6Al-4V coatings and the effect of heat treatment on coating microstructure modification was investigated. The results show that the cold sprayed Ti and Ti-6Al-4V coatings have porous structure with a high deposition efficiency. The porosities of cold sprayed Ti and Ti-6Al-4V coatings are found to be 5.4∓2.4% and 22.3∓4.7% under spray conditions. The results show that the reactions of spray particles with oxygen and the poor thermal conductivity of these materials result in a high particle interface temperature, resulting in localized melting and metallurgical bonding. Annealing at 859°C for 4 hours results in an increase in porosities of Ti and Ti-6Al-4V to coatings to 21.6∓4.6% and 29.7∓5.1% respectively, due to coalescence of incomplete interfaces and submicron pores.

AB - The mictrostructure of cold sprayed Ti and Ti-6Al-4V coatings and the effect of heat treatment on coating microstructure modification was investigated. The results show that the cold sprayed Ti and Ti-6Al-4V coatings have porous structure with a high deposition efficiency. The porosities of cold sprayed Ti and Ti-6Al-4V coatings are found to be 5.4∓2.4% and 22.3∓4.7% under spray conditions. The results show that the reactions of spray particles with oxygen and the poor thermal conductivity of these materials result in a high particle interface temperature, resulting in localized melting and metallurgical bonding. Annealing at 859°C for 4 hours results in an increase in porosities of Ti and Ti-6Al-4V to coatings to 21.6∓4.6% and 29.7∓5.1% respectively, due to coalescence of incomplete interfaces and submicron pores.

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U2 - 10.1002/adem.200700022

DO - 10.1002/adem.200700022

M3 - 文章

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SN - 1438-1656

VL - 9

SP - 418

EP - 423

JO - Advanced Engineering Materials

JF - Advanced Engineering Materials

IS - 5

ER -

Ti and Ti-6Al-4V coatings by cold spraying and microstructure modification by heat treatment

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