Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Kati Valtonen"'
Autor:
Marta Ostolaza, Jon Iñaki Arrizubieta, Antoine Queguineur, Kati Valtonen, Aitzol Lamikiz, Iñigo Flores Ituarte
Publikováno v:
Materials & Design, Vol 223, Iss , Pp 111172- (2022)
The prediction of the in-service behaviour of metal-matrix composites produced by laser-directed energy deposition is a fundamental challenge in additive manufacturing. The interaction between the reinforcement phase and the matrix has a major impact
Externí odkaz:
https://doaj.org/article/0895f6e950884a1a81bffa7cd53920fd
Publikováno v:
Tribology Online, Vol 8, Iss 2, Pp 152-161 (2013)
Energy can be saved by enhancing the service life of machinery and by designing lighter units. These design changes enable, for example, lower fuel consumption and larger payloads. The implementation of this kind of solutions, however, requires devel
Externí odkaz:
https://doaj.org/article/9ae16252ced5461a968bf2f09c5b5438
Publikováno v:
Tribology Online, Vol 7, Iss 3, Pp 179-183 (2012)
Crushing of minerals involves several wear mechanisms. The mineral medium increases the complexity of the wear process by introducing many new variables. Despite the fact that processing of minerals normally causes wear, the minerals can also in some
Externí odkaz:
https://doaj.org/article/287ac5a721384c228edc6744ca715ba5
Autor:
Oskari Haiko, Sakari Pallaspuro, Vahid Javaheri, Pentti Kaikkonen, Sumit Ghosh, Kati Valtonen, Antti Kaijalainen, Jukka Kömi
Experimental steels, a direct-quenched and partitioned (DQP) steel and a carbide-free bainitic steel (CFB), were tested along with a commercial martensitic 500 HB grade wear resistant steel in high-stress abrasive conditions. The three steels had dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::084440aaa6842bbd515e94b840581b15
https://trepo.tuni.fi/handle/10024/148310
https://trepo.tuni.fi/handle/10024/148310
Stainless steels are commonly used in hydraulic components where they may be sus-ceptible to cavitation erosion. In this study the cavitation erosion resistance of AISI 420-type stainless steel is examined after quenching and partitioning (Q&P) heat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3287a8d4ad0d0f00102ff11db5c5760a
https://trepo.tuni.fi/handle/10024/147929
https://trepo.tuni.fi/handle/10024/147929
Publikováno v:
Waste and Biomass Valorization. 12:5545-5559
This study investigated heterotrophic bioleaching of rare earth elements (REEs) and base metals from spent nickel-metal-hydride (NiMH) batteries. Furthermore, the impacts of phosphorous source [Ca3(PO4)2, KH2PO4 and K2HPO4] and its concentration on o
Publikováno v:
Tribologia-Finnish Journal of Tribology
Ultra-high strength steels are widely utilized in many applications operating in harsh abrasive wear conditions.For instance, the machineries used in mining and mineral handling or in agricultural sector require robust, but cost-effective wear-resist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e730075ec0cde11649be02649b2da03
https://trepo.tuni.fi/handle/10024/146086
https://trepo.tuni.fi/handle/10024/146086
Autor:
Anubhuti Bhatnagar, Abhishek Singhal, Henrik Tolvanen, Kati Valtonen, Tero Joronen, Jukka Konttinen
Publikováno v:
Waste management (New York, N.Y.). 138
This study investigated biomass blending and water washing to improve product quality from two-step pyrolysis of rice straw. Rice straw (RS) was mixed with groundnut shells (GNS) and wheat straw (WS) in different weight ratios. Blending RS with GNS/W
Autor:
Veli-Tapani Kuokkala, Juuso Terva, Marian Apostol, Karthik Ram Ramakrishnan, Vilma Ratia, Kati Valtonen
Publikováno v:
Valtonen, K, Ratia, V, Ramakrishnan, K R, Apostol, M, Terva, J & Kuokkala, V-T 2019, ' Impact wear and mechanical behavior of steels at subzero temperatures ', Tribology International, vol. 129, pp. 476-493 . https://doi.org/10.1016/j.triboint.2018.08.016
In this study, the deformation behavior of three steels was studied at Arctic temperatures by controlled single and multiple oblique angle impacts. The results were compared with the mechanical properties of the steels determined at the corresponding
Autor:
Kati Valtonen
Publikováno v:
Proceedings of the European Microscopy Congress 2020.