Aluminium

Fig. 2 and Table 1 present the open circuit potential versus time curves and self-corrosion rate of Al, Alloy 1 and Alloy 2 electrodes in 2 M NaCl electrolyte, respectively. Corrosion rates were obtained by weight loss measurements in 2 M NaCl solution after 60 min. As seen in Table 1, the corrosion rate increases in the following order: Al ＜Alloy 1 ＜ Alloy 2. Fig. 2 indicates that open circuit potential of Alloy 1, 2 (especially Alloy2) is more negative than that of Al. It can be seen that the…

A mineral is defined by geologists as naturally occurring, generally inorganic, solid substances, with an orderly crystalline structure, and a definite chemical composition that allows for some variation. The following are examples of materials and whether or not they fit the definition of a mineral. Window glass is a non-crystalline solid that is synthetically created from silica, generally used for its optical transparency. Glass is an inorganic solid with a definite chemical composition.…

The atomic number of 45 belongs to the element rhodium which is derived from the Greek word Rhodon meaning rose. It was first discovered in 1803 by William Hyde Wollaston, an English chemist. it is known as one of the PGM (platinum-group metals). Canada, Russia and south Africa are one of the top three producers of rhodium as south Africa as main exporter. It is usually found together with other PGMs as ores mined in its reserves. People who love jewelries are often attracted to the rarity of…

Zinc is a wonderful choice to produce coinage since it is an abundance element with stable market pricing contrasted with numerous other coinage elements. In addition, they require less plating than other alternative base metals and its transportation cost are lower as well. Zinc comes in a phase of a solid with blueish-white color that exhibits a shiny luster and are neither ductile or malleable at room temperature unless the metal is being heated. One of the most important quality of zinc is…

Nebraska has many natural resources. Nebraska’s most important products are beef cattle, corn, soybeans, and hogs. Livestock products account for about 2/3 of Nebraska’s farm income, and beef cattle are the most important source, followed by hogs. Corn is Nebraska’s most important crop, with much of it going to feed cattle and hogs. Petroleum, sand and gravel, clays for bricks, tiles, and pottery are also important resources. Two thirds of the High Plains Aquifer lie under Nebraska. Nebraska may…

Zinc is an essential mineral that can be found in many foods or dietary supplements. The mineral zinc is found in the periodic table with the symbol ZN and has an atomic number of thirty. Zinc is one of the more abundant elements in the Earth’s crust, the twenty-fourth most abundant, and it contains five stable isotopes. This mineral is also known as an essential trace element, meaning the human body only requires a small amount to be considered healthy. One of the health benefits of zinc…

You think summer is hot, think again. Although copper is a common metal known to man, there may be a few interesting details that you did not know about the element. Such as how hot you must heat copper before it melts into liquid form, or how the smallest dose of copper could make a major impact on your health. The uses of this metal could open up new opportunities and inspire new innovations that may have not been thought of before. Copper dates back almost ten thousand years and has been a…

Copper, also known as red metal, is one of the basic chemical elements. It was the first metal used by Neolithic humankind to supplement for stone tools dating back more than 10,000 years. Copper comes from copper ore, which is dug from the earth is melted and shaped into desired shape. Hydrothermal, heated water deep in earth’s crust seeps through cracks and fissures and dissolves certain minerals in the rocks, is the process that form copper. The mineral is carried along with hot water…

Introduction Desulphurization of steel at ladle treatment of metal is one of the important technological operations. The successful course of the desulfurization process is provided by fire refining slag with specific chemical composition, usually based on calcium oxide. The duration of mixing of the metal with the slag in inert gas, the early formation of refining slag, then optimization of the metal oxidation providing the formation of iron oxide FeO in the slag to be less than 0.5 % able…

Titanium is a low-density element (has 60% density of steel), that be able to be highly modified by alloying and distortion processing. Titanium is non magnetic, non toxic and has good heat transfer properties. Titanium and its alloys have melting points advanced those of steels, but maximum useful temperatures for structural applications usually range from 425-540C°. Titanium has good resistance to attack by most mineral acids and chlorides [ASM]. The combination of high strength, stiffness,…