Modified tensile adhesion test for evaluation of interfacial toughness of HVOF sprayed coatings

The adhesion strength of plasma-sprayed ceramic coatings was studied. Alumina powder was used for plasma spraying. A titanium oxide Nano powder with a particle size of 40-50 [nm] was used as a modifier. The optimal conditions of plasma spraying of coatings are established. The adhesion strength was used as an optimization criterion. Coating adhesion was determined by tensile adhesion testing. A mathematical model is obtained that allows one to determine the effect of spraying conditions (lens current, arc current, and the position of the solenoid relative to the nozzle) on the adhesion strength.

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Tensile adhesion testing methodology for thermally sprayed coatings

Journal of Materials Engineering ◽

10.1007/bf02834068 ◽

1990 ◽

Vol 12 (2) ◽

pp. 151-158 ◽

Cited By ~ 29

Author(s):

Christopher C. Berndt

Keyword(s):

Testing Methodology ◽

Adhesion Testing ◽

Thermally Sprayed Coatings ◽

Tensile Adhesion ◽

Thermally Sprayed ◽

Sprayed Coatings

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Adhesion test of thermal sprayed coatings.

Journal of the Metal Finishing Society of Japan ◽

10.4139/sfj1950.37.483 ◽

1986 ◽

Vol 37 (9) ◽

pp. 483-486

Author(s):

Junji MORIMOTO ◽

Akio YAMAGUCHI

Keyword(s):

Adhesion Test ◽

Sprayed Coatings ◽

Thermal Sprayed Coatings

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Tensile Test Specimens with a Circumferential Precrack for Evaluation of Interfacial Toughness of Thermal-Sprayed Coatings

Journal of Thermal Spray Technology ◽

10.1007/s11666-008-9168-2 ◽

2008 ◽

Vol 17 (2) ◽

pp. 228-233 ◽

Cited By ~ 12

Author(s):

Akio Kishi ◽

Seiji Kuroda ◽

Tadanobu Inoue ◽

Takeshi Fukushima ◽

Hisami Yumoto

Keyword(s):

Tensile Test ◽

Interfacial Toughness ◽

Sprayed Coatings ◽

Thermal Sprayed Coatings

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Cross-Functional Test to Explore the Determination Method of Meso-Parameters in the Discrete Element Model of Asphalt Mixtures

Materials ◽

10.3390/ma14195786 ◽

2021 ◽

Vol 14 (19) ◽

pp. 5786

Author(s):

Xingyu Yi ◽

Huimin Chen ◽

Houzhi Wang ◽

Zhiyun Tang ◽

Jun Yang ◽

...

Keyword(s):

Asphalt Mixture ◽

Ct Scanning ◽

Element Model ◽

Discrete Element ◽

Asphalt Mixtures ◽

Model Parameters ◽

Aggregate Model ◽

Dem Simulation ◽

Tensile Adhesion ◽

Tensile Adhesion Test

In order to obtain more accurate parameters required for the simulation of asphalt mixtures in the discrete element method (DEM), this study carried out a series of cross-functional asphalt mixture experiments to obtain the DEM simulation meso-parameters. By comparing the results of simulation and actual experiments, a method to obtain the meso-parameters of the DEM simulation was proposed. In this method, the numerical aggregate profile was obtained by X-ray CT scanning and the 3D aggregate model was reconstructed in MIMICS. The linear contact parameters of the aggregate and the Burgers model parameters of the asphalt mastic were obtained by nanoindentation technology. The parameters of the parallel bonding model between the aggregate and mastic were determined by the macroscopic tensile adhesion test and shear bond test. The results showed that the meso-parameters obtained by the macroscopic experiment provide a basis for the calibration of DEM parameters to a certain extent. The trends in simulation results are similar to the macro test results. Therefore, the newly proposed method is feasible.

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