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Frontiers of Materials Science

ISSN 2095-025X

ISSN 2095-0268(Online)

CN 11-5985/TB

邮发代号 80-974

2019 Impact Factor: 1.747

Frontiers of Materials Science in China  2009, Vol. 3 Issue (3): 333-338   https://doi.org/10.1007/s11706-009-0051-y
  RESEARCH ARTICLE 本期目录
Adhesion behavior of plasma sprayed thermal barrier coatings on Al-6061 and cast iron substrates
Adhesion behavior of plasma sprayed thermal barrier coatings on Al-6061 and cast iron substrates
N. KRISHNAMURTHY1(), S. C. SHARMA2, M. S. MURALI2, P. G. MUKUNDA1
1. Mechanical Engineering Department, Nitte Meenakshi Institute of Technology, Bangalore 560064, Karnataka, India; 2. Mechanical Engineering Department, RV College of Engineering, Bangalore, Karnataka, India
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Abstract

In this work an investigation was carried out on adhesion strength and micro-hardness of plasma sprayed coatings on Al-6061 and cast iron substrate materials. For the adhesion test, ASTM C633, and for the micro hardness, ASTM E384 standards were used. From the results obtained it was found that the main failure locations were in the bond coat-substrate interface, which is considered as adhesion strength. The various parameters affecting adhesion strength are also discussed.

Key wordsadhesion strength    micro-hardness plasma spraying    thermal barrier coating
收稿日期: 2009-04-11      出版日期: 2009-09-05
Corresponding Author(s): KRISHNAMURTHY N.,Email:krishamu@rediffmail.com   
 引用本文:   
. Adhesion behavior of plasma sprayed thermal barrier coatings on Al-6061 and cast iron substrates[J]. Frontiers of Materials Science in China, 2009, 3(3): 333-338.
N. KRISHNAMURTHY, S. C. SHARMA, M. S. MURALI, P. G. MUKUNDA. Adhesion behavior of plasma sprayed thermal barrier coatings on Al-6061 and cast iron substrates. Front Mater Sci Chin, 2009, 3(3): 333-338.
 链接本文:  
https://academic.hep.com.cn/foms/CN/10.1007/s11706-009-0051-y
https://academic.hep.com.cn/foms/CN/Y2009/V3/I3/333
Fig.1  
substrate material
Al-6061cast iron
Si-0.65, Fe-0.25, Cu-0.25, Mn-0.3, Mg-0.89,Zn-0.1, Cr-0.07, V-0.01, Ti-0.82, Al-balanceFe-3.54, C-2.21, Si-0.67, Mn-0.25,Cr-0.013, Cu-0.56, P-0.031
coating material
Metco105SFP (TC1)a)Metco 201NS (TC2)b)Metco 446 (BC1)c)Metco 452 (BC2)d)Metco 410NS (BC3)e)
99.5Al2O3ZrO2·5CaOAl·25Fe·7Cr·5NiFe·38Ni·10AlAl2O3·30(Ni·20Al)
Tab.1  
Fig.2  
sample (Al6061 and cast iron substrate)123456
TC1100300400
TC2100300400
BC1505050100100100
BC3 common for Al-6061 & CI substrate505050
BC2 for CI substrate only505050100100100
Tab.2  
materialprimary gas (argon) pressure /kPasecondary gas (H2) pressure /kPacarrier gas (N2) flow /(L·min-1)current /Avoltage /Vspray distance /mmfeed rate /(kg·h-1)
TC1700520606006564-1252.7
TC2345345375007550-1005.4
BC15203403750070100-1503.2
BC27003403750065100-1754.1
BC3700350375006575-1252.3
Tab.3  
Fig.3  
Fig.4  
samplealuminum substratecast iron substrate
123456123456
adhesion strength /MPa9.686.115.5211.810.37.4712.5616.828.735.938.8744.2
Hardness, HV031050-10701000-10501020-1060950-1000900-930880-9001040-10601020-10501000-1030930-1000920-960900-940
Tab.4  
Fig.5  
Fig.6  
Fig.7  
Fig.8  
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