Sökning: "carbide"
Visar resultat 16 - 20 av 360 avhandlingar innehållade ordet carbide.
16. Tailoring of Contacts on Silicon Carbide - Procedures and Mechanisms
Sammanfattning : Silicon carbide (SiC) exhibits very good electrical, thermal, chemical and mechanical properties which make it suitable for the next generation of wide band gap electronic devices, where silicon (Si) cannot be used due to its limitations with respect to the mentioned properties. Nickel (Ni) and Tantalum (Ta) are among the metals used for the contact formation. LÄS MER
17. Gate Control and System Aspects of Silicon Carbide JFETs
Sammanfattning : .... LÄS MER
18. On the Nature of Cemented Carbide Wear in Rock Drilling
Sammanfattning : WC/Co cemented carbide is a composite material for highly demanding wear applications. The unique combination of hardness (from the WC-phase) and toughness (from the binder Co) gives a material especially suitable for rock drilling. LÄS MER
19. Aqueous Processing of WC-Co Powders Aqueous processing of WC-Co powders
Sammanfattning : The object of this work is toobtain a fundamental understanding of the principal issuesconcerning the handling of WC-Co powders, in an aqueousmedium.The oxidation and dissolution oftungsten carbide powder dispersed in water was investigatedusing X-ray Photoelectron Spectroscopy (XPS) and leachingstudies. LÄS MER
20. Interaction of C60 with transition metals for thin film applications
Sammanfattning : The fullerene molecule C60 is known to undergo many different chemical reactions, including intercalation of alkali- and alkaline earth metals. Relatively little is still known about the reaction between transition metals and C60, and the objective of this thesis was therefore-to investigate the chemical interaction between C60 and some group IV-VI transition metals. LÄS MER