Mechanical behavior of Ti cold spray coatings determined by a multi-scale indentation method

Goldbaum, Dina; Ajaja, Jihane; Chromik, Richard R.; Wong, Wilson; Yue, Stephen; Irissou, Éric; Legoux, Jean-Gabriel

doi:10.1016/j.msea.2011.09.083

Cited by 75 publications

(20 citation statements)

References 46 publications

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“…2. Many efforts have been made to reduce the formation of pores in cold-sprayed coatings due to their adverse effect on mechanical properties [8,10,26,27].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of aluminum–alumina metal matrix composites via cold gas dynamic spraying at low pressure followed by friction stir processing

Hodder

Izadi

McDonald

et al. 2012

Materials Science and Engineering: A

146

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“…2. Many efforts have been made to reduce the formation of pores in cold-sprayed coatings due to their adverse effect on mechanical properties [8,10,26,27].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of aluminum–alumina metal matrix composites via cold gas dynamic spraying at low pressure followed by friction stir processing

Hodder

Izadi

McDonald

et al. 2012

Materials Science and Engineering: A

146

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“…The difference in the particle velocities can be attributed to the changes made in the cold spray system over time including the replacement of the gun nozzle. Some of the particle velocity measurements, listed in the Table 1, were previously published (Ref 11,25).…”

Section: The Effect Of the Gas Temperature And Pressure On The Deposimentioning

confidence: 99%

The Effect of Deposition Conditions on Adhesion Strength of Ti and Ti6Al4V Cold Spray Splats

et al. 2011

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Cold spray is a complex process where many parameters have to be considered in order to achieve optimized material deposition and properties. In the cold spray process, deposition velocity influences the degree of material deformation and material adhesion. While most materials can be easily deposited at relatively low deposition velocity (<700 m/s), this is not the case for high yield strength materials like Ti and its alloys. In the present study, we evaluate the effects of deposition velocity, powder size, particle position in the gas jet, gas temperature, and substrate temperature on the adhesion strength of cold spayed Ti and Ti6Al4V splats. A micromechanical test technique was used to shear individual splats of Ti or Ti6Al4V and measure their adhesion strength. The splats were deposited onto Ti or Ti6Al4V substrates over a range of deposition conditions with either nitrogen or helium as the propelling gas. The splat adhesion testing coupled with microstructural characterization was used to define the strength, the type and the continuity of the bonded interface between splat and substrate material. The results demonstrated that optimization of spray conditions makes it possible to obtain splats with continuous bonding along the splat/substrate interface and measured adhesion strengths approaching the shear strength of bulk material. The parameters shown to improve the splat adhesion included the increase of the splat deposition velocity well above the critical deposition velocity of the tested material, increase in the temperature of both powder and the substrate material, decrease in the powder size, and optimization of the flow dynamics for the cold spray gun nozzle. Through comparisons to the literature, the adhesion strength of Ti splats measured with the splat adhesion technique correlated well with the cohesion strength of Ti coatings deposited under similar conditions and measured with tubular coating tensile (TCT) test.

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“…To identify the phases by the positions of the diffraction peaks, data from JCPDS database were used [45]. The micro-hardness measurements were performed using a Vickers micro-hardness tester Shimadzu HMV-2000 applying a load of 50 g. Since different scales of hardness testing can sample different mechanisms and micro-indentation should be affected by things other than material hardening [46] the load and indent locations were carefully selected in order to avoid inhomogeneous regions like interfaces and porosity.…”

Section: Microstructural Characterisationmentioning

confidence: 99%

Effect of nature of nitride phases on sliding wear of plasma nitrided sintered iron

Binder

Bendo

Hammes

et al. 2015

Wear

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Mechanical behavior of Ti cold spray coatings determined by a multi-scale indentation method

Cited by 75 publications

References 46 publications

Fabrication of aluminum–alumina metal matrix composites via cold gas dynamic spraying at low pressure followed by friction stir processing

Fabrication of aluminum–alumina metal matrix composites via cold gas dynamic spraying at low pressure followed by friction stir processing

The Effect of Deposition Conditions on Adhesion Strength of Ti and Ti6Al4V Cold Spray Splats

Effect of nature of nitride phases on sliding wear of plasma nitrided sintered iron

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