Study on process, microstructure and properties of surface graded coating on C/PMR15 composite

Xiao Ting Huang; Fu Chi Wang; Zhuang Ma; Quan Sheng Wang

Study on process, microstructure and properties of surface graded coating on C/PMR15 composite

Xiao Ting Huang^*, Fu Chi Wang, Zhuang Ma, Quan Sheng Wang

^*Corresponding author for this work

School of Material Science and Engineering

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

Abstract

Two surface graded coatings on C/PMR15 substrate, Ni-Ni/Cr-WC/Co and PI-Ni/Cr-WC/Co were designed. Microstructure and the ability of resistance thermal shock were tested. The results show that the Ni-Ni/Cr-WC/Co coatings by electroless nickel and HVOF are compacter, higher bond strength than the PI-Ni/Cr-WC/Co coatings by HVOF. The former can resist 300 thermal cycles and have no visible changes, while the latter fail through delamination after 273 thermal cycles. The main reasons are that the layer of electroless nickel can be combined with the substrate through mechanical and atomic forces, and also with the Ni-Cr alloy layer by metallurgic and mechanical reaction, in addition efficiently relax the stress of the coating, so the bond strength of the graded coating is increased.

Original language	English
Pages (from-to)	7-10
Number of pages	4
Journal	Cailiao Gongcheng/Journal of Materials Engineering
Issue number	5
Publication status	Published - May 2005

Keywords

Electroless nickel
Graded coating
Thermal shock resistance

Cite this

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title = "Study on process, microstructure and properties of surface graded coating on C/PMR15 composite",

abstract = "Two surface graded coatings on C/PMR15 substrate, Ni-Ni/Cr-WC/Co and PI-Ni/Cr-WC/Co were designed. Microstructure and the ability of resistance thermal shock were tested. The results show that the Ni-Ni/Cr-WC/Co coatings by electroless nickel and HVOF are compacter, higher bond strength than the PI-Ni/Cr-WC/Co coatings by HVOF. The former can resist 300 thermal cycles and have no visible changes, while the latter fail through delamination after 273 thermal cycles. The main reasons are that the layer of electroless nickel can be combined with the substrate through mechanical and atomic forces, and also with the Ni-Cr alloy layer by metallurgic and mechanical reaction, in addition efficiently relax the stress of the coating, so the bond strength of the graded coating is increased.",

keywords = "Electroless nickel, Graded coating, Thermal shock resistance",

author = "Huang, {Xiao Ting} and Wang, {Fu Chi} and Zhuang Ma and Wang, {Quan Sheng}",

year = "2005",

month = may,

language = "English",

pages = "7--10",

journal = "Cailiao Gongcheng/Journal of Materials Engineering",

issn = "1001-4381",

publisher = "Beijing Institute of Aeronautical Materials (BIAM)",

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}

TY - JOUR

T1 - Study on process, microstructure and properties of surface graded coating on C/PMR15 composite

AU - Huang, Xiao Ting

AU - Wang, Fu Chi

AU - Ma, Zhuang

AU - Wang, Quan Sheng

PY - 2005/5

Y1 - 2005/5

N2 - Two surface graded coatings on C/PMR15 substrate, Ni-Ni/Cr-WC/Co and PI-Ni/Cr-WC/Co were designed. Microstructure and the ability of resistance thermal shock were tested. The results show that the Ni-Ni/Cr-WC/Co coatings by electroless nickel and HVOF are compacter, higher bond strength than the PI-Ni/Cr-WC/Co coatings by HVOF. The former can resist 300 thermal cycles and have no visible changes, while the latter fail through delamination after 273 thermal cycles. The main reasons are that the layer of electroless nickel can be combined with the substrate through mechanical and atomic forces, and also with the Ni-Cr alloy layer by metallurgic and mechanical reaction, in addition efficiently relax the stress of the coating, so the bond strength of the graded coating is increased.

AB - Two surface graded coatings on C/PMR15 substrate, Ni-Ni/Cr-WC/Co and PI-Ni/Cr-WC/Co were designed. Microstructure and the ability of resistance thermal shock were tested. The results show that the Ni-Ni/Cr-WC/Co coatings by electroless nickel and HVOF are compacter, higher bond strength than the PI-Ni/Cr-WC/Co coatings by HVOF. The former can resist 300 thermal cycles and have no visible changes, while the latter fail through delamination after 273 thermal cycles. The main reasons are that the layer of electroless nickel can be combined with the substrate through mechanical and atomic forces, and also with the Ni-Cr alloy layer by metallurgic and mechanical reaction, in addition efficiently relax the stress of the coating, so the bond strength of the graded coating is increased.

KW - Electroless nickel

KW - Graded coating

KW - Thermal shock resistance

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M3 - Article

AN - SCOPUS:20144372251

SN - 1001-4381

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JO - Cailiao Gongcheng/Journal of Materials Engineering

JF - Cailiao Gongcheng/Journal of Materials Engineering

IS - 5

ER -

Study on process, microstructure and properties of surface graded coating on C/PMR15 composite

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