Sökning: "reaction bonding"
Visar resultat 1 - 5 av 62 avhandlingar innehållade orden reaction bonding.
1. Manufacture of long-fibre reinforced ceramics by reaction bonding
Sammanfattning : For several decades ceramic matrix composites has been of interest to be used as hot parts in certain high-performance gas turbine aero engines. In general, ceramic materials resist higher temperatures than superalloys. LÄS MER
2. The silicon nitride reaction-bonding process
Sammanfattning : The so called Reaction-Bonded Silicon Nitride (RBSN) materials are usually produced through the chemical reaction of silicon powder compacts in a nitriding atmosphere. This nitriding reaction is strongly exothermic and much heat is generated, which may cause to overheating, even melting of the powder compacts so to hinder the further reaction due to the reduction of specific area of the powder compacts, especially when the nitridation involves a rather large mass of silicon. LÄS MER
3. The RDGT - Integration of Micromechanics and Electronics by Plasma Assisted Wafer Bonding
Sammanfattning : A high-resolution capacitive sensing technique is presented in this thesis: the Resonant Double Gate Transistor (RDGT). The major advantage of the RDGT compared to "pure" capacitive sensing techniques is its low output impedance because of the direct capacitance to current conversion of the transistor. LÄS MER
4. Thiol-ene and Thiol-ene-epoxy Based Polymers for Biomedical Microdevices
Sammanfattning : Within healthcare there is a market pull for biomedical devices that can rapidly perform laboratory processes, such as diagnostic testing, in a hand-held format. For this reason, biomedical devices must become smaller, more sophisticated, and easier to use for a reasonable cost. LÄS MER
5. Water-Metal Surfaces : Insights from core-level spectroscopy and density functional theory
Sammanfattning : Computational methods are combined with synchrotron-based techniques to analyze the structure and bonding of water and water plus hydroxyl at metal surfaces under UHV and at near-ambient conditions. Water-metal interaction plays a crucial role in a multitude of cosmic, atmospheric and biological phenomena as well as heterogeneous catalysis, electrochemistry and corrosion. LÄS MER