dc.contributor	Aidoo Edmund Ofei, Ing. : 67619
dc.contributor.advisor	Müller Miloš, Ing. Ph.D. : 55450
dc.contributor.author	Huluka, Feben Tereffe
dc.date.accessioned	2020-11-27T05:39:18Z
dc.date.available	2020-11-27T05:39:18Z
dc.date.committed	2021-4-30
dc.date.defense	2020-06-25
dc.date.submitted	2019-11-1
dc.date.updated	2020-6-25
dc.degree.level	Ing.
dc.description.abstract	Research on Nano layer coating application for the improvement of the resistance to cavitation erosion has been discussed. The coating was accomplished by Arc PVD method where the substrate was an aluminum alloy namely duralumin. A vibratory cavitation device at a constant amplitude was used to conduct the cavitation test on the coated and reference samples. The surface characterization during the incubation period was carried out with the help of a confocal microscope. The effect of roughness on the duration of the incubation period was analyzed and the failure mode was studied to examine the coating's behavior under cavitation. To better understand the response of the coatings to cavitation, further surface characterization was performed using SEM and Brinell hardness tester. This technique allows us to understand the failure mode of the coating and the influence of the different parameters that can affect the cavitation resistance. The influence of substrate hardness on the cavitation resistance was analyzed and discussed. The substrate's change in hardness is due to the coating process. For this reason, the influence of temperature and time during the application of the coating on the resistance to cavitation is discussed. All the data obtained from measurement were compared against a raw sample, which shows that the resistance of the coated samples all decreased. This is due to the change in the alloy's property during the coating process, which is explained in the chapter labeled discussion.	cs
dc.description.abstract	Research on Nano layer coating application for the improvement of the resistance to cavitation erosion has been discussed. The coating was accomplished by Arc PVD method where the substrate was an aluminum alloy namely duralumin. A vibratory cavitation device at a constant amplitude was used to conduct the cavitation test on the coated and reference samples. The surface characterization during the incubation period was carried out with the help of a confocal microscope. The effect of roughness on the duration of the incubation period was analyzed and the failure mode was studied to examine the coating's behavior under cavitation. To better understand the response of the coatings to cavitation, further surface characterization was performed using SEM and Brinell hardness tester. This technique allows us to understand the failure mode of the coating and the influence of the different parameters that can affect the cavitation resistance. The influence of substrate hardness on the cavitation resistance was analyzed and discussed. The substrate's change in hardness is due to the coating process. For this reason, the influence of temperature and time during the application of the coating on the resistance to cavitation is discussed. All the data obtained from measurement were compared against a raw sample, which shows that the resistance of the coated samples all decreased. This is due to the change in the alloy's property during the coating process, which is explained in the chapter labeled discussion.	en
dc.description.mark
dc.format	62
dc.format.extent	Ilustrace, Grafy, Tabulky No
dc.identifier.signature	V 202002422
dc.identifier.uri	https://dspace.tul.cz/handle/15240/158264
dc.language.iso	an
dc.relation.isbasedon	beginenumerate itemKIM, Ki-Han, Georges CHAHINE, Jean-Pierre FRANC a Ayat KARIMI. Advanced experimental and numerical techniques for cavitation erosion prediction. Dordrecht: Springer, [2014]. Fluid mechanics and its applications, v. 106. itemFRANC, Jean-Pierre a Jean-Marie MICHEL. Fundamentals of cavitation. Boston: Kluwer Academic Publishers, c2004. ISBN 1402022328. itemBRENNEN, Christopher E. Cavitation and bubble dynamics. New York: Cambridge University Press, c2014. ISBN 978-1-107-64476-2. itemALICJA, Krella a Andrzej CZYZNIEWSKI. Cavitation erosion resistance of Cr-N coating deposited on stainless steel. Wear. 2006, 260(11), 1324-1332. DOI: 10.1016/j.wear.2005.09.018. endenumerate
dc.rights	Vysokoškolská závěrečná práce je autorské dílo chráněné dle zákona č. 121/2000 Sb., autorský zákon, ve znění pozdějších předpisů. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou https://knihovna.tul.cz/document/26	cs
dc.rights	A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act. https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics https://knihovna.tul.cz/document/26	en
dc.rights.uri	https://knihovna.tul.cz/document/26
dc.rights.uri	https://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf
dc.subject	Cavitation	cs
dc.subject	Coating	cs
dc.subject	Incubation period	cs
dc.subject	Arc PVD	cs
dc.subject	Cavitation	en
dc.subject	Coating	en
dc.subject	Incubation period	en
dc.subject	Arc PVD	en
dc.title	Application of Nano-layers for the improvement of cavitation resistance	cs
dc.title	Application of nano-layers for the improvement of the cavitation resistance	en
dc.type	diplomová práce	cs
local.degree.abbreviation	Navazující
local.degree.discipline	KSA
local.degree.programme	Mechanical Engineering
local.degree.programmeabbreviation	N2301
local.department.abbreviation	KEZ
local.faculty	Fakulta strojní	cs
local.faculty.abbreviation	FS
local.identifier.author	S18000190
local.identifier.stag	40658
local.identifier.verbis
local.identifier.verbis	kpw06669231
local.note.administrators	automat
local.note.secrecy	Povoleno ZverejnitPraci Povoleno ZverejnitPosudky
local.poradovecislo	2422

Application of Nano-layers for the improvement of cavitation resistance

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