Sökning: "chromium"
Visar resultat 1 - 5 av 240 avhandlingar innehållade ordet chromium.
1. Key Aspects of Sintering Powder Metallurgy Steel Prealloyed with Chromium and Manganese
Sammanfattning : The powder metallurgy (PM) process is a cost efficient near net-shape technology suitable for sustainable manufacturing of structural steel components. A drawback with the PM technology is the difficulty to use oxidation sensitive alloying elements, such as Cr and Mn. LÄS MER
2. Application of Nanomaterials for the Removal of Hexavalent Chromium and their Biological Implications
Sammanfattning : The International Agency for Research on Cancer (IARC) stated that chromium in the form of Cr(VI) has been deemed to be a class-A human carcinogen. It has been a major contaminant associated with wastewater. LÄS MER
3. Studies of oxide reduction and nitrogen uptake in sintering of chromium-alloyed steel powder
Sammanfattning : The powder metallurgy (PM) process route is very competitive for mass production of structural steel components with complex shape, due to efficient material utilisation, low energy consumption, and short overall production time. The most commonly used alloying elements are the processing friendly metals Cu, Ni and Mo. LÄS MER
4. Cobalt-Chromium alloys in fixed prosthodontics
Sammanfattning : Gold and its alloys have been the dominant framework materials in metal-ceramic constructions when substantial loss of tooth substance or missing teeth needs to be replaced. However, base metal alloys, such as cobalt-chromium (Co-Cr), have been introduced due to increased gold price. LÄS MER
5. Microstructure of Nickel-Chromium Superalloys
Sammanfattning : The microstructure of nickel-chromium superalloys has been investigated using several advanced microanalytical techniques; atom probe field ion microscopy (APFIM), transmission electron microscopy (TEM) together with energy dispersive X-ray analysis (EDX) and electron energy loss spectroscopy (EELS), secondary ion mass spectroscopy (SIMS) and optical microscopy (OM). The features primarily considered include precipitation, segregation and ordering. LÄS MER