Shape memory alloys have again appealed a lot in recent years as new special materials of unusual macroscopic features that make them interesting for study and research as well as for their multifunctional application in various branches of techniques. Shape memory refers to the ability of certain plastic metals and alloys to regain their original shape during the heating process due to complet...

The effects of metal combinations on cytotoxicity were examined following dynamic extraction by freely gyrating two spherical metals in a glass vessel. The cell viabilities of an Au alloy, a Ag-Pd-Au alloy and Ti were little affected by combinations among three metals. Cell viability ranged between 60 and 80% when precious alloys were in combination with Co-Cr or Ni-Cr alloys. Ti showed a clear...

Under certain conditions, hydrogen can degrade the mechanical properties and fracture behavior of most structural alloys; however, it also has some positive effects in metals. Several current and potential applications of hydrogen for enhancing the production and processing of materials are reviewed. These include thermohydrogen processing (THP) and forming of refractory alloys, processing of r...

Usually metals and alloys are in a crystalline state. However, metallic glasses ( amorphous metals ) can be obtained from certain alloys with the right composition, when they are quenched from the liquid state at a high enough cooling rate. Since their discovery in 1960, amorphous metals or metallic glasses have been developed from binary systems of micron size (ribbons and powders) to multi-co...

About 50% of metals used in Aerospace industries are Aluminium and Titanium alloys, Alloys such as Ti6Al4V, AL-7175, and AL7075 are used extensively in space vehicles, aviation, and automotive industries for having enhanced mechanical properties like High strength to weight ratio, low Thermal Expansion and better Corrosion resistance. Comparison of properties Aluminium and Titanium alloys shows...

The cytotoxicity of a series of 29 experimental alloys and six pure metals was determined with cell culture techniques and succinic dehydrogenase histochemistry. The width of any ring of inhibition, optical density of the histochemically stained cells, and a visual ranking of the intensity of the blue color of the stained cells were compared for determination of cytotoxicity. Twenty-four of the...

The magnetic susceptibilities and electrical conductivities of cobalt, nickel and palladium and of their alloys with copper, silver and gold are discussed on the basis of the quantum theory of metals. It is shown that the number of electrons in the outermost s state must be about 0.6 per atom in the transition metals and one in the noble metals; certain magnetic properties of the alloys are exp...

The Corrosion Performances in Various artificial body fluids of various metals are evaluated, Artificial human blood, urine serum, Joint fluid, simulated bile solutions, artificial salaiva, Hank’s solutions Ringers, Tyrode of the solution, Cigada solutions are examined with different type of metals such as Ni-Al-Fe alloys, TiO2 nano tubes, cobalt alloys, Cr alloys, 316 stainless steel, Mg alloy...

Tremendous potential exists for the growth of metal finishing industry in this century through the development of processes that are either environmentally friendly or are applicable at the nano scale. In the CEE the theoretical and experimental studies are performed to achieve such coatings. Nanostructured alloys and innovative composite materials were developed through adaptation of existing ...