ABSTRACT
Solution ............................................................................. 200 10.4 Summary ...................................................................................... 204 Keywords .............................................................................................. 204 References ............................................................................................. 204
10.1 INTRODUCTION
Continuously increasing interest in metallic glasses based on iron is associated with abnormal physical properties of these materials, and as well as a wide range of potential applications, and relatively low production costs. These materials exhibit high strength, hardness, corrosion resistance, can also be precursors of nanocrystalline soft magnetic material [1]. Exceptionally high vitrification ability have the alloys Fe68-xCoxZr10Mo5W2B15 (innovative material received in the Institute of Physics of the Czestochowa University of Technical) [2]. Very high hardness and paramagnetic properties at room temperature, make that Fe68-xCoxZr10Mo5W2B15 materials can be used in the production of coatings, including the cutting elements in the manufacture of surgical blades. The use conditions of medical instruments determine the selection of materials used in the various components of tools manufacture, so that their operation satisfies the functionality, security and reliability requirements. Proper selection of materials for the instruments results from criteria that should be provide [2]:
• corrosion resistance under different kind of conditions; • an appropriate set of mechanical properties; • reliability and stability of the property within a certain operation
time. Massive amorphous alloys of Fe68-xCoxZr10Mo5W2B15 composition
are produced by suction arc melted alloys to a water-cooled copper form (form of rods or tubes) or one-way rapid quenching on spinning copper drum (tape). With increase of Co content in the alloy composition the improve of alloy vitrifi cation ability is observed. Another consequence of greater cobalt percentage content is the temperature Curie increase of amorphous materials [2]. However, the disadvantage results from the cobalt content increase is lower corrosion resistance in sulphate environments [2].
