Search for dissertations about: "passive film"

Showing result 1 - 5 of 32 swedish dissertations containing the words passive film.

  1. 1. Corrosion and Surface Studies of Stainless Steel and Chromium Carbide Thin-Films

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jonas Högström; Uppsala universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; corrosion; electrochemistry; thin film; stainless steel; passive film; chromium carbide; carbon oxidation; surface; depth profile; XPS; SEM; EQCM; sputtering;

    Abstract : Although the passive films that form on stainless steels have been extensively studied, the concentration depth profiles are not fully understood. Their thinness makes passive films hard to study, but angle-resolved X-ray photoelectron spectroscopy (ARXPS) is a non-destructive technique that can be used to obtain depth information. READ MORE

  2. 2. Depth Profiling of the Passive Layer on Stainless Steel using Photoelectron Spectroscopy

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Wendy Fredriksson; Uppsala universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; depth profile; stainless steel; passive film; XPS; HAXPES; corrosion; powder metallurgical; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : The physical properties of the protective passive films formed on the surface of stainless steels under electrochemical polarization in different electrolytes were studied. The structure of these films was analyzed as a function of depth using photoelectron spectroscopy (PES). READ MORE

  3. 3. Use of local electrochemical techniques for corrosion studies of stainless steels

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Nuria Fuertes; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stainless steel; passive film; thermal oxides; work function; pickling; SKPFM; SVET; XPS; AES; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : The excellent corrosion resistance of stainless steels arises from the presence of a passive film on its surface. Above 10.5wt% Cr a chromium oxide of 1-3 nm is formed on the surface of the metal that in case of damage will reform and hinder further dissolution of the metal. READ MORE

  4. 4. Nature-inspired passive flow control using various coatings and appendages

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Ugis Lacis; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow control; passive appendage; surface coating; pressure drag; friction drag; Flödeskontroll; passiva bihang; ytbeläggning; tryckmotstånd; friktionsmotstånd;

    Abstract : There is a wide variety of tails, fins, scales, riblets and surface coatings, which are used by motile animals in nature. Since organisms currently living on earth have gone through millions of years of evolution, one can expect that their design is optimal for their tasks, including locomotion. READ MORE

  5. 5. Ecologies of Practices and Thinking

    University dissertation from Göteborg : ArtMonitor

    Author : Elke Marhöfer; Göteborgs universitet.; Gothenburg University.; [2015]
    Keywords : HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; new materialism; film; image; matter; nonhuman; more-than-human; other-than-human; not-so-human; ecology; agriculture; otherness; storytelling; enunciation; post-context; post-history; animism; colonialism; becoming with; seeing together; lines of flight; modes; animals; plants; things; territories; multiplicities; chaos; expressive continuum; rerational aesthetics; radical empiricism; Baruch Spinoza; Gilles Deleuze; Félix Guattari; Isabelle Stengers; Donna Haraway; Anna Lowenhaupt Tsing; Brian Massumi; Danièle Huillet; Jean Marie Straub;

    Abstract : How does a new materialist film practice look? To approach this question the practice-led material driven research explores dynamic ecological relations and processes of thinking and practicing. It employs an animist methodology which allows it to relate to the nonhuman as an active participant, rather than a passive object of inquiry. READ MORE