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  • Helena Ronkainen
2020

Tribocorrosion behaviour of thermally sprayed cermet coatings in paper machine environment

Huttunen-Saarivirta, E., Heino, V., Isotahdon, E., Kilpi, L. & Ronkainen, H., Feb 2020, In : Tribology International. 142, 106006.

Research output: Contribution to journalArticleScientificpeer-review

2019
5 Citations (Scopus)
Open Access
File
14 Downloads (Pure)

Matrix morphology and the particle dispersion in HDPE nanocomposites with enhanced wear resistance

Pelto, J., Verho, T., Ronkainen, H., Kaunisto, K., Metsäjoki, J., Seitsonen, J. & Karttunen, M., 10 May 2019, In : Polymer Testing. 77, 105897.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
3 Citations (Scopus)

Tribocorrosion behaviour of non-passivating alloys: case examples and approaches to wear-corrosion synergy determination

Huttunen-Saarivirta, E., Mäntyranta, A., Isotahdon, E., Heino, V. & Ronkainen, H., 9 Sep 2019, EUROCORR 2019, Proceedings of the European Corrosion Congress . 196725

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Wear of additively manufactured tool steel in contact with aluminium alloy

Huttunen-Saarivirta, E., Heino, V., Vaajoki, A., Hakala, T. J. & Ronkainen, H., 8 Jun 2019, In : Wear. 432-433, 202934.

Research output: Contribution to journalArticleScientificpeer-review

2018

Characterization of DLC-Coated and Uncoated Surfaces by New Directional Blanket Curvature Covering (DBCC) Method

Wolski, M., Podsiadlo, P., Stachowiak, G. W., Holmberg, K., Laukkanen, A. & Ronkainen, H., 2018, In : Tribology Letters. 66, 4, 153.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Comparison of mechanical properties and composition of magnetron sputter and plasma enhanced atomic layer deposition aluminum nitride films

Sippola, P., Pyymäki Perros, A., Ylivaara, O., Ronkainen, H., Julin, J., Liu, X., Sajavaara, T., Etula, J., Lipsanen, H. & Puurunen, R. L., 30 Jul 2018, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 36, 5, 12 p., 051508.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
1 Citation (Scopus)

Fabrication of ultrathin multilayered superomniphobic nanocoatings by liquid flame spray, atomic layer deposition, and silanization

Sorvali, M., Vuori, L., Pudas, M., Haapanen, J., Mahlberg, R., Ronkainen, H., Honkanen, M., Valden, M. & Makela, J. M., 9 Mar 2018, In : Nanotechnology. 29, 18, 185708.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Insights into the behaviour of tool steel-aluminium alloy tribopair at different temperatures

Huttunen-Saarivirta, E., Kilpi, L., Hakala, T. J., Metsäjoki, J. & Ronkainen, H., 1 Mar 2018, In : Tribology International. 119, p. 567-584 18 p.

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Tribocorrosion behaviour of aluminium bronze in 3.5 wt.% NaCl solution

Huttunen-Saarivirta, E., Isotahdon, E., Metsäjoki, J., Salminen, T., Carpén, L. & Ronkainen, H., 1 Nov 2018, In : Corrosion Science. 144, p. 207-223 17 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
2 Citations (Scopus)

Tribological properties of thin films made by atomic layer deposition sliding against silicon

Kilpi, L., Ylivaara, O. M. E., Vaajoki, A., Liu, X., Rontu, V., Sintonen, S., Haimi, E., Malm, J., Bosund, M., Tuominen, M., Sajavaara, T., Lipsanen, H., Hannula, S. P., Puurunen, R. L. & Ronkainen, H., 1 Jan 2018, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 36, 1, 01A122.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
2017

Aluminum oxide/titanium dioxide nanolaminates grown by atomic layer deposition: Growth and mechanical properties

Ylivaara, O. M. E., Kilpi, L., Liu, X., Sintonen, S., Ali, S., Laitinen, M., Julin, J., Haimi, E., Sajavaara, T., Lipsanen, H., Hannula, S-P., Ronkainen, H. & Puurunen, R. L., 2017, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 35, 1, 14 p., 01B105.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
10 Citations (Scopus)

Multiscale characterisation of 3D surface topography of DLC coated and uncoated surfaces by directional blanket covering (DBC) method

Wolski, M., Podsiadlo, P., Stachowiak, G. W., Holmberg, K., Laukkanen, A., Ronkainen, H., Gee, M., Nunn, J., Gachot, C. & Li, L., 2017, In : Wear. 388-389, p. 47-56

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Topographical orientation effects on surface stresses influencing on wear in sliding DLC contacts, Part 2: Modelling and simulations

Laukkanen, A., Holmberg, K., Ronkainen, H., Stachowiak, G., Podsiadlo, P., Wolski, M., Gee, M., Gachot, C. & Li, L., 15 Oct 2017, In : Wear. 388-389, p. 18-28 11 p.

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
2016

An investigation into the effect of substrate on the load-bearing capacity of thin hard coatings

Wang, C. T., Hakala, T. J., Laukkanen, A., Ronkainen, H., Holmberg, K., Gao, N., Wood, R. J. K. & Langdon, T. G., 2016, In : Journal of Materials Science. 51, 9, p. 4390-4398

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Microscratch testing method for systematic evaluation of the adhesion of atomic layer deposited thin films on silicon

Kilpi, L., Ylivaara, O. M. E., Vaajoki, A., Malm, J., Sintonen, S., Tuominen, M., Puurunen, R. L. & Ronkainen, H., 2016, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 34, 1, 01A124.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
13 Citations (Scopus)

The influence of carbon based coatings and surface finish on the tribological performance in high-load contacts

Ronkainen, H., Elomaa, O., Varjus, S., Kilpi, L., Jaatinen, T. & Koskinen, J., 2016, In : Tribology International. 96, p. 402-409

Research output: Contribution to journalArticle

12 Citations (Scopus)

Topographical orientation effects on friction and wear in sliding DLC, part 2: modelling and simulations

Laukkanen, A., Holmberg, K., Ronkainen, H., Stachowiak, G., Podsiadlo, P., Wolski, M., Gee, M., Gachot, C. & Li, L., 2016.

Research output: Contribution to conferenceConference articleScientific

21 Citations (Scopus)

Tribological properties of atomic layer deposited thin films against silicon

Kilpi, L., Ylivaara, O., Vaajoki, A., Liu, X., Rontu, V., Sintonen, S., Haimi, E., Bosund, M., Tuominen, M., Sajavaara, T., Lipsanen, H., Hannula, S-P., Puurunen, R. & Helena, R., 2016.

Research output: Contribution to conferenceConference PosterScientific

2015

Mechanical property mapping of ALD thin films

Puurunen, R. L., Ali, S., Arstila, K., Berdova, M., Haimi, E., Heikkinen, H., Julin, J., Kilpi, L., Laitinen, M., Liu, X., Lyytinen, J., Malm, J., Pyymaki-Perros, A., Rontu, V., Sintonen, S., Ylivaara, O., Sajavaara, T., Lipsanen, H., Franssila, S., Koskinen, J. & 3 others, Ronkainen, H., Hannula, S-P. & Kiihamäki, J., 2015, Technical Program & Abstracts. American Vacuum Society AVS

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Topographical orientation effects on friction and wear in sliding DLC and steel contacts: Part 1: Experimental

Holmberg, K., Laukkanen, A., Ronkainen, H., Waudby, R., Stachowiak, G., Wolski, M., Podsiadlo, P., Gee, M., Nunn, J., Gachot, C. & Li, L., 2015, In : Wear. 330-331, p. 3-22

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)
2014

Aluminum oxide from trimethylaluminum and water by atomic layer deposition: The temperature dependence of residual stress, elastic modulus, hardness and adhesion

Ylivaara, O. M. E., Liu, X., Kilpi, L., Lyytinen, J., Schneider, D., Laitinen, M., Julin, J., Ali, S., Sintonen, S., Berdova, M., Haimi, E., Sajavaara, T., Ronkainen, H., Lipsanen, H., Koskinen, J., Hannula, S. P. & Puurunen, R. L., 2014, In : Thin Solid Films. 552, p. 124-135 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
84 Citations (Scopus)

Evaluation of Young's modulus and residual stress of suspended ALD thin films by bulge and MEMS shaft loading techniques

Berdova, M., Grigoras, K., Ylitalo, T., Kassamakov, I., Heino, J., Törmä, P. T., Kilpi, L., Ronkainen, H., Koskinen, J., Hæggström, E. & Franssila, S., 2014.

Research output: Contribution to conferenceConference AbstractScientific

5 Citations (Scopus)

Material challenges in the manufacturing of tailored structures with direct write technologies

Metsä-Kortelainen, S., Ronkainen, H., Varis, T., Ruusuvuori, K., Roozeman, R., Vehmas, T., Kupiainen, V., Ahlroos, T., Lagerbom, J. & Suhonen, T., 2014, Materials Challenges and Testing for Manufacturing, Mobility, Biomedical Applications and Climate. Udomkichdecha, W., Böllinghaus, T., Manonukul, A. & Lexow, J. (eds.). Springer, p. 57-66

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Mechanical assessment of suspended ALD thin films by bulge and shaft-loading techniques

Berdova, M., Ylitalo, T., Kassamakov, I., Heino, J., Törmä, P. T., Kilpi, L., Ronkainen, H., Koskinen, J., Hæggström, E. & Franssila, S., 2014, In : Acta Materialia. 66, p. 370-377 8 p.

Research output: Contribution to journalArticleScientificpeer-review

31 Citations (Scopus)

Microstructural, mechanical and tribological analysis of nanocomposite Ti-C-N coatings deposited by industrial-scale DC magnetron sputtering

Louring, S., Madsen, N. D., Sillassen, M., Berthelsen, A. N., Christensen, B. H., Almtoft, K. P., Ronkainen, H., Nielsen, L. P. & Bøttiger, J., 2014, In : Surface and Coatings Technology. 245, p. 40-48 9 p.

Research output: Contribution to journalArticle

17 Citations (Scopus)

Scratch tests of PEG-impregnated samples of green wood

Fortino, S., Salminen, L. I., Sirviö, J., Metsäjoki, J., Ronkainen, H. & Bjurhager, I., 2014. 2 p.

Research output: Contribution to conferenceConference articleScientific

Temperature dependence of the mechanical properties of ALD TiO2 from TiCl4 and H2O on silicon

Ylivaara, O., Liu, X., Kilpi, L., Schneider, D., Laitinen, M., Julin, J., Ali, S., Sintonen, S., Haimi, E., Sajavaara, T., Lipsanen, H., Ronkainen, H., Hannula, S-P. & Puurunen, R. L., 2014, BALD2014 Abstract book.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Thermal and plasma enhanced atomic layer deposition of SiO2 using commercial silicon precursors

Putkonen, M., Bosund, M., Ylivaara, O. M. E., Puurunen, R. L., Kilpi, L., Ronkainen, H., Sintonen, S., Ali, S., Lipsanen, H., Liu, X., Haimi, E., Hannula, S. P., Sajavaara, T., Buchanan, I., Karwacki, E. & Vähä-Nissi, M., 2014, In : Thin Solid Films. 558, p. 93-98 6 p.

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)

Tribological Performance of ALD Al2O3, TiO2 and ATO nanolaminate coatings

Kilpi, L., Vaajoki, A., Varjus, S., Ylivaara, O., Puurunen, R. L. & Ronkainen, H., 2014, BALD2014 Abstract book.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Tribological properties of laser-textured and ta-C coated surfaces with burnished WS2 at elevated temperatures

Oksanen, J., Hakala, T. J., Tervakangas, S., Laakso, P., Kilpi, L., Ronkainen, H. & Koskinen, J., 2014, In : Tribology International. 70, p. 94-103 10 p.

Research output: Contribution to journalArticleScientificpeer-review

35 Citations (Scopus)
2013

ALD Al2O3/TiO2 nanolaminates on Si: residual stress, elastic modulus, hardness and adhesion

Ylivaara, O., Liu, X., Ali, S., Sintonen, S., Laitinen, M., Julin, J., Kilpi, L., Sajavaara, T., Haimi, E., Ronkainen, H., Lipsanen, H., Hannula, S-P. & Puurunen, R. L., 2 Sep 2013, 19th European Conference on Chemical Vapor Deposition (EuroCVD 19). Elsevier

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

ALD Al2O3 from TMA and water on Si: residual stress, elastic modulus, hardness and adhesion: residual stress, elastic modulus, hardness and adhesion

Ylivaara, O., Liu, X., Kilpi, L., Lyytinen, J., Schneider, D., Laitinen, M., Julin, J., Ali, S., Sintonen, S., Berdova, M., Haimi, E., Sajavaara, T., Ronkainen, H., Lipsanen, H., Koskinen, J., Hannula, S-P. & Puurunen, R. L., 2013, Technical Program & Abstracts, published abstract of a poster. American Vacuum Society AVS

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

ALD membrane strength measurement with a stylus profilometer

Gao, F., Puurunen, R., Laukkanen, A., Kilpi, L., Ronkainen, H. & Kiihamäki, J., 2013.

Research output: Contribution to conferenceConference PosterScientific

Characterization of thin film adhesion by MEMS shaft-loading blister testing

Berdova, M., Lyytinen, J., Grigoras, K., Baby, A., Kilpi, L., Ronkainen, H., Franssila, S. & Koskinen, J., 2013, In : Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 31, 3, 5 p., 031102.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Diamond nanoparticles in ethylene glycol lubrication on steel-steel high load contact

Elomaa, O., Hakala, T. J., Myllymäki, V., Oksanen, J., Ronkainen, H., Singh, V. K. & Koskinen, J., 2013, In : Diamond and Related Materials. 34, p. 89-94 6 p.

Research output: Contribution to journalArticle

17 Citations (Scopus)

Finite element analysis of coating adhesion failure in pre-existing crack field

Holmberg, K., Laukkanen, A., Ronkainen, H. & Wallin, K., 2013, In : Tribology: Materials, Surfaces & Interfaces. 7, 1, p. 42-51 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Materials for electronics by thermal spraying

Ronkainen, H., Kanerva, U., Varis, T., Ruusuvuori, K., Turunen, E., Peräntie, J., Putaala, J., Juuti, J. & Jantunen, H., 2013, Physical and numerical simulation of materials processing VII. Karjalainen, L. P., Porter, D. A. & Järvenpää, S. A. (eds.). Trans Tech Publications, p. 451 - 456 (Materials Science Forum, Vol. 762).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Miniature plasma sprayed strain gauges for torque sensing

Tervo, J., Vuorio, J., Paro, J., Ruusuvuori, K. & Ronkainen, H., 2013, In : Powder Metallurgy. 56, 5, p. 335-336 1 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Modelling of friction and structural transformations in diamong-like carbon coating

Ronkainen, H., Laukkanen, A. & Holmberg, K., 2013, Multiscale modelling and design for engineering application. Laitinen, T. & Wallin, K. (eds.). Espoo: VTT Technical Research Centre of Finland, p. 47-62 (VTT Technology; No. 77).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Surface embedded temperature sensor on tool part for real time injection moulding process monitoring

Schonberg, T., Ruusuvuori, K., Christensen, B. H., Boivie, K., Berild, J. P., Ronkainen, H. & Gellein, R. T., 2013, Proceedings: Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers and Eurosensors XXVII, 2013. IEEE Institute of Electrical and Electronic Engineers , p. 116-119

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

The effect of coating characteristics on the performance of a-C:H and ta-C coatings

Ronkainen, H., Laukkanen, A., Holmberg, K., Kano, M., Horiuchi, T. & Suzuki, T., 2013, Proceedings: 5th World Tribology Congress, WTC 2013. Vol. 1. p. 161-164 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Tribological behaviour of carbon thin films against bearing steel under continuous sliding in hydrogen environment

Vaajoki, A., Tanaka, H., Varjus, S., Ronkainen, H. & Sugimura, J., 2013, Proceedings: 5th World Tribology Congress, WTC 2013. p. 3098-3101

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)
2012

Adhesion performance and tribological properties of atomic layer deposited aluminum oxide films

Ronkainen, H., Kilpi, L., Vaajoki, A., Varjus, S., Ylivaara, O. & Puurunen, R. L., 2012, Technical Program & Abstracts. American Vacuum Society AVS

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Direct write techniques for competitiveness and increased product functionality (SUORA)

Ronkainen, H., 2012, Production matters: VTT in global trends. Häkkinen, K. (ed.). Espoo: VTT Technical Research Centre of Finland, p. 43-45 (VTT Research Highlights; No. 3).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Miniature plasma sprayed strain gauges for torque sensing

Tervo, J., Vuorio, J., Paro, J., Ruusuvuori, K. & Ronkainen, H., 2012, Proceedings of Euro PM 2012. UK: European Power Metallurgy Association EPMA

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review