Sökning: "titanium"

Visar resultat 6 - 10 av 426 avhandlingar innehållade ordet titanium.

  1. 6. Preparation and Characterization of Glow Disharge Modifies Titanium Surfaces

    Författare :Björn-Owe Aronsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Titanium; surface modification; surface properties; plasma techniques; oxidation; surface spectroscopy; TiO2; biomaterials;

    Sammanfattning : The main theme of the present thesis is controlled preparation and characterization of oxidized titanium surfaces. Such surfaces are of general technological interest. LÄS MER

  3. 7. Biomaterial Components Prepared by Titanium Powder Technology

    Författare :Mikael Eriksson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dental; coping; biomaterial; titanium-hydroxyapatite composite; crown; cold isostatic pressing; deformation; titanium powder; high velocity compaction; powder metallurgy;

    Sammanfattning : The main objectives of this work were twofold: First, to determine if a pressed-powder method could be used to fabricate titanium dental copings, and to line out what problems or benefits this new method would have. Second, to test if high velocity compaction of titanium powder could be used to form biomaterial components such as copings or dental implants. LÄS MER

  4. 8. Bioactive Coatings and Antibacterial Approaches for Titanium Medical Implants

    Författare :Oscar Janson; Ken Welch; Pentti Tengvall; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioactivity; antibacterial; titanium; hydrogen peroxide; hydroxyapatite; biomaterial; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Sammanfattning : The aim of this thesis was to characterize and manufacture coatings and surfaces with antibacterial properties and retained or enhanced bioactivity and biocompatibility. The aim was also to study the optimal composition and parameters of mixtures for debridement of bacterial biofilms on titanium surfaces. LÄS MER

  5. 9. Concepts for hot sheet metal forming of titanium alloys

    Författare :Eva-Lis Odenberger; Roger Reed; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot sheet metal forming; Titanium; FE simulation; Validation; Springback; HCP; Varmforming; Titan; FE simulering; Validering; Återfjädring; HCP; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : To increase the competitiveness of the Swedish aero engine industry alternative manufacturing methods for load carrying aero engine structures are desired, in order to reduce product cost and enable weight reduction and thereby fuel consumption. Traditionally, these structures mainly consist of large-scaled single castings of e.g. LÄS MER

  7. 10. Methods for evaluation of early bone healing at titanium implants

    Författare :Karin Hederstierna; Göteborgs universitet; []
    Nyckelord :TOF-SIMS; titanium; porosity; Magnesium; hydroxyapatite; implant surface; bone resorption; bone formation;

    Sammanfattning : Titanium has for a long time been the implant material of choice when in need for abilities as strength, biocompatibility and stability. Although numbers of studies have been made, little is known about the early events in implant healing. The primary aim in this thesis was to develop methods for evaluating bone healing around implants. LÄS MER