All Outputs (150)

Sliding wear investigation of suspension sprayed WC-Co nanocomposite coatings. (2014)
Journal Article
AHMED, R., ALI, O., FAISAL, N.H., AL-ANAZI, N.M., AL-MUTAIRI, S., TOMA, F.-L., BERGER, L.-M., POTTHOFF, A. and GOOSEN, M.F.A. 2015. Sliding wear investigation of suspension sprayed WC-Co nanocomposite coatings. Wear [online], 322-323, pages 133-150. Available from: https://doi.org/10.1016/j.wear.2014.10.021

Sliding wear evaluation of nanostructured coatings deposited by Suspension High Velocity Oxy-Fuel (S-HVOF) and conventional HVOF (Jet Kote (HVOF-JK) and JP5000 (HVOF-JP)) spraying were evaluated. S-HVOF coatings were nanostructured and deposited via... Read More about Sliding wear investigation of suspension sprayed WC-Co nanocomposite coatings..

Structure property relationship of suspension thermally sprayed WC-Co nanocomposite coatings. (2014)
Journal Article
AHMED, R., FAISAL, N.H., AL-ANAZI, N.M., AL-MUTAIRI, S., TOMA, F.-L., BERGER, L.-M., POTTHOFF, A., POLYCHRONIADIS, E.K., SALL, M., CHALIAMPALIAS, D. and GOOSEN, M.F.A. 2015. Structure property relationship of suspension thermally sprayed WC-Co nanocomposite coatings. Journal of thermal spray technology [online], 24(3), pages 357-377. Available from: https://doi.org/10.1007/s11666-014-0174-2

Tribomechanical properties of nanostructured coatings deposited by suspension high velocity oxy-fuel (S-HVOF) and conventional HVOF (Jet Kote) spraying were evaluated. Nanostructured S-HVOF coatings were obtained via ball milling of the agglomerated... Read More about Structure property relationship of suspension thermally sprayed WC-Co nanocomposite coatings..

An improved Vickers indentation fracture toughness model to assess the quality of thermally sprayed coatings. (2014)
Journal Article
FAISAL, N.H., AHMED, R., PRATHURU, A.K., SPENCE, S., HOSSAIN, M. and STEEL, J.A. 2014. An improved Vickers indentation fracture toughness model to assess the quality of thermally sprayed coatings. Engineering fracture mechanics [online], 128, pages 189-204. Available from: https://doi.org/10.1016/j.engfracmech.2014.07.015

This study presents an improved approach to the quality assessment of thermally sprayed coatings. Measurements were carried out on five different coatings. Since it is the overall extent of surface cracking during Vickers indentation that is indicati... Read More about An improved Vickers indentation fracture toughness model to assess the quality of thermally sprayed coatings..

Structure-property relationships in a CoCrMo alloy at micro and nano-scales. (2014)
Journal Article
AHMED, R., DE VILLIERS LOVELOCK, H.L., FAISAL, N.H. and DAVIES, S. 2014. Structure-property relationships in a CoCrMo alloy at micro and nano-scales. Tribology international [online], 80, pages 98-114. Available from: https://doi.org/10.1016/j.triboint.2014.06.015

This investigation considered the multiscale tribo-mechanical evaluations of CoCrMo (Stellite®21) alloys manufactured via two different processing routes of casting and HIP-consolidation from powder (Hot Isostatic Pressing). These involved hardness,... Read More about Structure-property relationships in a CoCrMo alloy at micro and nano-scales..

Nanoindentation of polysilicon and single crystal silicon: molecular dynamics simulation and experimental validation. (2014)
Journal Article
GOEL, S., FAISAL, N.H., LUO, X., YAN, J. and AGRAWAL, A. 2014. Nanoindentation of polysilicon and single crystal silicon: molecular dynamics simulation and experimental validation. Journal of physics D: applied physics [online], 47(27), article number 275304. Available from: https://doi.org/10.1088/0022-3727/47/27/275304

This paper presents novel advances in the deformation behaviour of polycrystalline and single crystal silicon using molecular dynamics (MD) simulation and validation of the same via nanoindentation experiments. In order to unravel the mechanism of de... Read More about Nanoindentation of polysilicon and single crystal silicon: molecular dynamics simulation and experimental validation..

Can a carbon nano-coating resist metallic phase transformation in silicon substrate during nanoimpact? (2014)
Journal Article
GOEL, S., AGRAWAL, A. and FAISAL, N.H. 2014. Can a carbon nano-coating resist metallic phase transformation in silicon substrate during nanoimpact? Wear [online], 315(1-2), pages 38-41. Available from: https://doi.org/10.1016/j.wear.2014.03.009

Nanomechanical response of a silicon specimen coated with a sp3 crystalline carbon coating (1.8nm thickness) was investigated using MD simulation. A sharp conical rigid tip was impacted at the speed of 50m/s up to a depth of ~80% of the coating thick... Read More about Can a carbon nano-coating resist metallic phase transformation in silicon substrate during nanoimpact?.

Single asperity nanoscratch behaviour of HIPed and cast Stellite 6 alloys. (2014)
Journal Article
AHMED, R., ASHRAF, A., ELAMEEN, M., FAISAL, N.H., EL-SHERIK, A.M., ELAKWAH, Y.O. and GOOSEN, M.F.A. 2014. Single asperity nanoscratch behaviour of HIPed and cast Stellite 6 alloys. Wear [online], 312(1-2), pages 70-82. Available from: https://doi.org/10.1016/j.wear.2014.02.006

The aim of this study was to investigate the nanoscale sliding wear behaviour of re-HIPed (Hot Isostatically Pressed) and cast cobalt-based Stellite 6 alloys. A nanoindentation system equipped with a wear testing module was used to simulate single as... Read More about Single asperity nanoscratch behaviour of HIPed and cast Stellite 6 alloys..

Influence of test methodology and probe geometry on nanoscale fatigue failure of diamond-like carbon film. (2014)
Journal Article
FAISAL, N.H., AHMED, R., GOEL, S. and FU, Y.Q. 2014. Influence of test methodology and probe geometry on nanoscale fatigue failure of diamond-like carbon film. Surface and coatings technology [online], 242, pages 42-53. Available from: https://doi.org/10.1016/j.surfcoat.2014.01.015

The aim of this paper is to investigate the mechanism of nanoscale fatigue using nano-impact and multiple-loading cycle nanoindentation tests, and compare it to previously reported findings of nanoscale fatigue using integrated stiffness and depth se... Read More about Influence of test methodology and probe geometry on nanoscale fatigue failure of diamond-like carbon film..

Atomistic investigation on the structure-property relationship during thermal spray nanoparticle impact. (2013)
Journal Article
GOEL, S., FAISAL, N.H., RATIA, V., AGRAWAL, A. and STUKOWSKI, A. 2014. Atomistic investigation on the structure-property relationship during thermal spray nanoparticle impact. Computational materials science [online], 84, pages 163-174. Available from: https://doi.org/10.1016/j.commatsci.2013.12.011

During thermal spraying, hot particles impact on a colder substrate. This interaction of crystalline copper nanoparticles and copper substrate is modeled, using MD simulation. The quantitative results of the impacts at different velocities and temper... Read More about Atomistic investigation on the structure-property relationship during thermal spray nanoparticle impact..

Nano-impact (fatigue) characterization of as-deposited amorphous nitinol thin film. (2012)
Journal Article
FAISAL, N.H., AHMED, R. and FU, R. 2012. Nano-impact (fatigue) characterization of as-deposited amorphous nitinol thin film. Coatings [online], 2(3), pages 195-209. Available from: https://doi.org/10.3390/coatings2030195

This paper presents nano-impact (low cycle fatigue) behavior of as-deposited amorphous nitinol (TiNi) thin film deposited on Si wafer. The nitinol film was 3.5 µm thick and was deposited by the sputtering process. Nano-impact tests were conducted to... Read More about Nano-impact (fatigue) characterization of as-deposited amorphous nitinol thin film..