Browsing SINTEF Open by Author "Ciftja, Arjan"

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The effect of preliminary heat treatment on the durability of reaction bonded silicon nitride crucibles for solar cells applications

Hendawi, Rania Tayseer Atieh; Ciftja, Arjan; Stokkan, Gaute; Arnberg, Lars; Di Sabatino Lundberg, Marisa (Peer reviewed; Journal article, 2020)

Silicon nitride crucibles have the potential to replace silica crucibles and reduce the cost of silicon crystallization because of their reusability potential. Till date, crucibles’ heat treatment before each use is a ...
Recycling of the Rare Earth Oxides from Spent Rechargeable Batteries Using Waste Metallurgical Slags

Tang, Kai; Ciftja, Arjan; Eijk, Casper van der; Wilson, Shawn C.; Tranell, Gabriella (Journal article; Peer reviewed, 2013)

A high temperature process for recycling spent nickel-metal hydride rechargeable batteries has been recently developed at SINTEF/NTNU. The spent battery modules were first frozen with liquid nitrogen for the de-activation ...