Sökning: "Nickel plating"

Hittade 5 avhandlingar innehållade orden Nickel plating.

  1. 1. Development of Techniques to Produce Nickel Coated Composite Materials as well as Hollow Nickel Fibres and Kinetic Study of the Process Involved

    Författare :Fan Li; Sichen Du; Ioannis Arvanitidis; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nickel; Chemical plating; Kinetics; Model; Hollow nickel fibres; Thermal decomposition; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The present thesis was mainly to study the preparation of nickel composite materials by chemical plating process. Nickel coated boron nitride particles, nickel coated spherical silica particles and nickel viscose composite fibres were prepared. Both experiment and model development were carried out to study the kinetics of the processes. LÄS MER

  3. 2. Control of particles codeposition and strengthening mechanisms in nickel based nanocomposite coatings

    Författare :Santiago Pinate; Caterina Zanella; Peter Leisner; Mari Lindström; Jönköping University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dispersion coatings; nanocomposite; Controlled particles codeposition; Surface treatment; ζ-potentials; Pulse-reverse deposition; Ultrasound agitation; Electrocrystallisation; Microstructure; Strengthening mechanisms; Hardness; Wear; Dispersionsbeläggning; nanokomposit; kontrollerad inkorporering av partiklar; ytbehandling; zeta-potential; bipolär pulsplätering; ultraljudsomrörning; elektrokristallisation; mikrostruktur; härdningsmekanism; hårdhet; nötning;

    Sammanfattning : Surface durability is a key factor in the service life of components. Depending on the aggressiveness of the environment, surface deterioration by wear or corrosion leads to failure of the bulk material and eventually to the loss of functionality of the component. LÄS MER

  4. 3. Nanofabrication of Diffractive Soft X-ray Optics

    Författare :Magnus Lindblom; Hans M. Hertz; Erik H. Anderson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nanofabrication; Zone plate; x-ray; diffractive x-ray optics; x-ray microscopy; Optics; Optik; Physics; Fysik;

    Sammanfattning : This thesis summarizes the present status of the nanofabrication of diffractive optics, i.e. zone plates, and test objects for soft x-ray microscopy at KTH. The emphasis is on new and improved fabrication processes for nickel and germanium zone plates. LÄS MER

  5. 4. Nanofabrication of Zone Plate Optics for Compact Soft X-Ray Microscopy

    Författare :Anders Holmberg; Hans Hertz; Christian David; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning : This Thesis describes the development of the KTH/Stockholm nanofabrication process for diffractive soft x-ray optics. The effort is motivated by the need for and requirement of specially designed diffractive optics and test objects for compact x-ray microscopy as well as optics for other applications such as phase imaging. LÄS MER

  7. 5. Some Aspects of Advanced Technologies and Signal Integrity Issues in High Frequency PCBs, with Emphasis on Planar Transmission Lines and RF/Microwave Filters

    Författare :Felix D. Mbairi; Sture Petersson; Shaofang Gong; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal integrity; crosstalk; guard trace; PCB; transmission line loss; high frequency measurement; dielectric; SU-8; electromagnetic bandgap; microwave filter; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : The main focus of this thesis is placed on high frequency PCB signal Integrity Is-sues and RF/Microwave filters using EBG structures. From the signal Integrity aspect, two topics were mainly discussed. LÄS MER