Aluminium

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    Chemistry Task 2 Essay

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    Chemistry Task 2 Portfolio Outline and examine some uses of different metals through history, including contemporary uses, as uncombined metals or as alloys. Metal/Metal Alloy Uses Throughout History Copper - Used to make ornaments and domestic utensils in historical times (not as tools as it is a soft metal) - In modern times used in electrical wiring, pipes and plumbing fittings, jewellery, decoration, - This is due to its malleability, ductility and good electrical conductivity. Bronze - Used for tools and weapons (due to low boiling point it could be easily melted, moulded and shaped) - In modern times used in ship’s propellers and casting statues Iron - Used as a much harder, stronger alternative to bronze in tools and weapons…

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    Unit 6 Lab

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    want to lose or gain an electron is to form an octet, which is to have 8 valence electron in its outer shell. Elements with bigger radius and require less energy to release an electron are more reactive and are able to form an octet easier. I hypothesize that if Calcium is in the lower period compared to the other metals, then it will be more reactive than the other two metals when faced with the tests, and that Aluminium will be the least reactive since it’s located across the group. This can…

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    Stainless Steel Case Study

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    form the passive layer (described in further detail in the corrosion resistant part). The higher the content used the greater the protection of stainless steel from rust will be achieved. Nickel → steadies the result of austenitic structure formation which enhances strength, ductility and toughness. It also increases the high temperature strength and cryogenic temperatures. It also makes the material non-magnetic. Manganese → also acts as an austenite stabilizer but it also assists in removing…

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    Cochlear Research Paper

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    Ceramics material are compounds between metallic and non-metallic elements where it most frequently oxides, nitrides, and carbides(William D.callister,JR, David G. Rethwisch,2015). This material use for technical applications are commonly based on aluminium oxide. The properties of ceramics which are insulative to the passage of heat and electricity and more resistant to high temperature and harsh environment(William D.callister,JR, David G. Rethwisch,2015). Ceramics in cochlear implants use for…

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    The Hall-Heroult Process

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    This paper will discuss about "the Hall-Heroult Process" history, process, and the two scientists that created this process. The Hall-Heroult process came to be in 1886 in the race of commercially viable route to aluminum by two men working independently, who are Paul Heroult and Charles M. Hall who was assisted by his sister Julia Brainerd Hall. The Hall-Heroult process is the process for smelting aluminum that involves dissolving the aluminum oxide in molten cryolite and electrolysis the…

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    Koutsomichalis et al (2008) discussed that having high hardness and good adhesion with the substrate the sprayed coating exhibited satisfactory wear resistance. Tungsten carbide is an advanced ceramic material combining a unique set of properties such as high hardness, high melting point, wear resistance, good thermal shock resistance, thermal conductivity and good resistance against oxidation. They can be applied as coatings by thermal spraying processes such as plasma-spraying, high-velocity…

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    All metal manufacturing includes a solidification process. The metal is either atomised to a powder, or it is cast. There is several casting methods used today. Many of the methods use the mould only once, for example sand mould casting, the lost-wax method and precision casting. For larger quantities of liquid metal, there are basically two methods: ingot casting and continuous casting. Ingot casting normally uses a permanent mould made by cast iron isolated by ceramic material. There are…

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    In the 70’s a few companies tried their hand at making outdoor coils using all aluminum, environmental corrosion turned out to be a conquering opponent. Only one company had success, which was Trane Company, due to a very cleaver design, where the condensing tube is covered with glue an additional piece of aluminum. This additional piece is sacrificed to the environment, allowing the primary tube to stay in tack. Trane patented the process in details making it extremely hard to duplicate. In a…

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    Conclusion The Synthesis of Copper Compound lab was to take a regular copper wire and turn it into a metallic copper which is a pure substance. When copper reacts with nitric acid several physically properties can be seen happening for example: the colour changing and gas vapor starting to form. Many of the other reactions were similar to this that I and my partner saw such as: the formation of copper (II) hydroxide, decomposing the compound (CuO (OH) 2) by heating it, adding a different acid…

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    A Dull Penny Lab

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    In this lab we took a dull penny from before the year 1970 and changed its color to a shiny gold with the help of chemistry. First, we used a vinegar and salt mixture and scrubbed it onto the penny. This process cleaned all of the dark corrosion spots away and made the copper color shine like new, which then allowed us to have a clean surface to experiment on. This was mostly a physical change but their was a slight chemical reaction because of the acidity of the vinegar. We then heated granular…

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