Search for dissertations about: "al zr"

Showing result 1 - 5 of 45 swedish dissertations containing the words al zr.

  2. 1. The influence of Al alloy microstructure on conversion coating formation

    Author : Salil Sainis; Caterina Zanella; Ehsan Ghassemali; Jönköping University; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aluminium alloys; cast Al-Si alloys; conversion coating treatment; cerium; localized deposition; surface pre-treatments; microstructure; SEM; FIB-SEM; AFM-SKPFM; aluminiumlegeringar; gjutna Al-Si legeringar; omvandlingsbeläggningar; cerium; lokaliserad deposition; ytförbehandlingar; microstruktur SEM; FIB-SEM; AFM-SKPFM;

    Abstract : The formation of conversion coatings based on Ce, trivalent Cr and Ti/Zr is triggered by the local pH increase at cathodic IM sites of the aluminium alloy microstructure. The pH gradient is created over the cathodic intermetallic (IM) sites of the microstructure and its intensity is influenced by their activity which depends on their chemical composition, their size, and spatial distribution. READ MORE

  4. 2. Crystallization of glasses in the system (Zr)-Y-Si-Al-O-(N)

    Author : Peter Vomacka; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Engineering Materials;

    Abstract : Glass is a group of materials that has been used for structural and functional purposes for many centuries. Nevertheless, interest in the science and technology of glass has expanded significantly in recent years as a result of the need to develop new materials for advanced applications. READ MORE

  5. 3. Al-Si Cast Alloys - Microstructure and Mechanical Properties at Ambient and Elevated Temperatures

    Author : Mohammadreza Zamani; Salem Seifeddine; Anders Jarfors; Franco Bonollo; Jönköping University; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aluminium cast alloys; eutectic modification; microstructural scale effect; transition metals; room and elevated temperatures tensile properties; physically-based constitutive model.;

    Abstract : Swedish industry is a global leader in development and manufacture of automotive and aviation components where the usage of aluminium products is remarkable. In addition to manufacturing aluminium components, casting enables low-cost and low-emission production of complex geometry components with a range of sizes. READ MORE

  6. 4. Mesoporous material systems for catalysis and drug delivery

    Author : Aylin Atakan; Magnus Odén; Cristina Canal; Petra de Jongh; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Hybrid material systems possess multi-functional properties which make them intriguing for the materials science community since very early dates. However, it is not straightforward to produce such material systems. A smart and efficient approach is necessary to extract the desired properties of each component under the desired conditions. READ MORE

  7. 5. Multicomponent Alloying for Improved Hard Coatings

    Author : Rikard Forsén; Magnus Odén; Naureen Ghafoor; Mats Johansson; Jochen Schneider; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Coatings are vital to protect and to increase the productivity of cutting tools in high speed and dry cutting applications. During the cutting operation the temperature may exceed 1000 ºC it is therefore necessary that the coatings withstand high temperatures. READ MORE