Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"hard metal"”.
-
Modelling the Extrusion of a Hard-Metal Paste
… technique used widely in the ceramics, food, metal and polymer industries, amongst others. This dissertation develops (i) measurements of the friction and bulk constitutive behaviour of pastes and (ii) numerical simulations of paste extrusion using these measurements as inputs. Two pastes were …
-
The erosion of WC-Co coatings
… and slurry erosive wear behaviour of WC-Co hard metal coatings. The coating compositions were WC-12%Co and WC-10%Co-4%Cr and were produced using both the TAFA JP5000 and the METCO Diamond Jet (DJ) thermal spray systems.
-
A Model for Abrasive Polymer Wear
… the polymer wear rate until the voids in the hard metal surface are filled, much like the filling observed with a file when used on soft metals. This regime of polymer wear is modeled on an event-by-event basis. The model utilizes a digitized profile of the metal surface, bulk polymer …
-
Leading Edge
… visually interesting designs that combine the hard metal edges with softer organic compositions. I find a certain beauty in the contrast between industrial and organic forms when they become melded together. This work investigates the structure of a bird’s wing as it moves in flight, a …
-
Noncovalent Interactions Between Alkali Metal Cation And Aza/thia-Crown Macrocycles: Mass Spectrometric Techniques And Theoretical Studies
… and thia-crown ether interactions with alkali metal cations. Infrared multiple photon dissociation (IRMPD) action spectroscopy and energy-resolved collision-induced dissociation (CID) techniques were used in conjunction with theoretical electronic structure calculations to characterize the …
-
Synthesis and Coordination Studies of Novel Heteroaryl Tetrazoles
… thiocyanate). A number of the resulting discrete metal complexes were analysed by X-ray crystallography and their potential application as anti-cancer therapeutics are discussed. Carboxylate functionalised pyridyl tetrazole ligands were also synthesised and characterised. These ligands were …
-
Functional dna: Biochemical/biophysical characterization & sensing applications
… DNAzyme which is active with divalent metal ions, showing the highest activity with Pb2+. The 8-17 DNAzyme has been isolated multiple times by different groups and has been the subject of many studies – both fundamental and practical. Mutational studies by the Peracchi and Lu groups …
-
GREEN METHODS BASED ON ECO-FRIENDLY LIXIVIANTS FOR CRITI-CAL METAL RECOVERY FROM TUNGSTEN INDUSTRIAL SCRAPS
… recycling methods for the recovery of critical metals from hard metal (HM) wastes, based on the use of functional and eco-friendly organic ac-ids in a hydro- or solvometallurgical leaching system. The thesis is presented as a collection of research products (3 articles and 1 patent), …
-
Cast Metal-Ceramic Composite Lattice Structures for Lightweight, Energy Absorbing, and Penetration Resistant Applications
… (AM) with a well-known understanding of the metalcasting process. We used AM to produce sand molds in different sizes and with additional features for various applications — these molds were then filled with molten metal. Current literature suggests that this when appropriately applied, this …
-
Oberflächenmodifikation des Hartmetalls Wolframkarbid-Kobalt durch Bor-Ionenimplantation
… der tribologischen Eigenschaften von Hartmetallen auf der Basis von Wolframkarbid– Kobalt unter Benutzung von Ionen–Implantation in Kombination mit den hierbei auftretenden Struktur– und Phasen–Änderungen. Die vorliegende Arbeit unterscheidet sich von allen anderen bisherigen Arbeiten …
-
Investigation on Factors Influencing Ultrasound-assisted Surface Decontamination of Fresh and Fresh-cut Vegetables
… to examine the interactions of ultrasound with a hard metal surface, the ultrasound treatment reduced the E. coli O157:H7 count to below the detection limit on coring knives on both the blade and welding joint when treated for 30 s in 1 mg/L chlorinated water. The two newly designed prototype …