scholarly journals Three-dimensional elastic deformation of a functionally graded coating/substrate system

2007 ◽  
Vol 44 (16) ◽  
pp. 5272-5288 ◽  
Author(s):  
M. Kashtalyan ◽  
M. Menshykova
Keyword(s):  
Elastic Deformation ◽  
Three Dimensional ◽  
Functionally Graded ◽  
Functionally Graded Coating ◽  
Graded Coating

Three-dimensional analysis of a functionally graded coating/substrate system of finite thickness

2008 ◽  
Vol 366 (1871) ◽  
pp. 1821-1826 ◽  
Author(s):  
M Kashtalyan ◽  
M Menshykova
Keyword(s):  
Finite Thickness ◽  
Three Dimensional ◽  
Thermomechanical Properties ◽  
Functionally Graded ◽  
Displacement Fields ◽  
Functionally Graded Coating ◽  
Graded Coating ◽  
Graded Material ◽  
Coating Type ◽  
Coating Design

The concept of functionally graded material (FGM) is currently actively explored in coating design for the purpose of eliminating the mismatch of thermomechanical properties at the interfaces and thus increasing the resistance of coatings to functional failure. In the present paper, three-dimensional elastic deformation of a functionally graded coating/substrate system of finite thickness subjected to mechanical loading is investigated. A comparative study of FGM versus homogeneous coating is conducted to examine the effect of the coating type on stress and displacement fields in the system.

Development of Functionally Graded Coating by Thermal Spray Deposition

2015 ◽  
pp. 121-162
Author(s):  
Jyotsna Dutta Majumdar ◽  
Indranil Manna
Keyword(s):  
Thermal Spray ◽  
Spray Deposition ◽  
Thermal Spraying ◽  
Chemical Vapor ◽  
Solid Substrate ◽  
Functionally Graded ◽  
Functionally Graded Coating ◽  
Energy Applications ◽  
Graded Coating ◽  
Gradient Coatings

Functionally Gradient Coatings (FGCs) are emerging materials with an improved service life and have a promising future for the production of (a) tailored components for applications subjected to large thermal gradients, (b) smart coating with improved corrosion and wear resistance, (c) improved fatigue wear, and (d) improved material structures for energy applications like batteries, fuel cells, etc. FGCs may be developed by physical/chemical vapor deposition, electro/electroless deposition, thermal spray deposition technique, etc. Thermal spraying refers to the technique or a group of techniques whereby molten or semi-molten droplets of materials are sprayed onto a solid substrate to develop the coating. In this chapter, detailed overviews of the development of functionally graded coating by thermal spray deposition techniques are presented. In addition, a few research results on the development of functionally graded coating for tribological and thermal barrier applications are presented.

Analysis on Functionally Graded Material Coating Interface Crack

2012 ◽  
Vol 602-604 ◽  
pp. 1596-1599
Author(s):  
Bo He ◽  
Chang Qing Sun
Keyword(s):  
Elastic Modulus ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Interface Crack ◽  
Functionally Graded ◽  
Physical Parameters ◽  
Mode I ◽  
Modulus Ratio ◽  
Functionally Graded Coating ◽  
Graded Coating

It is assumed that the physical parameters of functionally graded coating material accords with the variation of degree n polynomial, and based on this material model, the behavior of crack fracture on the interface of functionally graded coating is studied. The results show that when the functionally graded coating structure bears a tension load, stress intensity factors of mode I and mode II exist at the same time generally, and the intensity factor of mode I occupies a leading position all along. Besides, when the elastic modulus ratio of the base to the functionally graded coating top is 5 and the elastic modulus of functionally graded coating varies linearly, the stress intensity factor of interface crack is the smallest, and with the increasing of elastic modulus ratio, the optimal non-uniform parameter tends to be larger than 1.

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