Aluminium

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…

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…

who crated metals by characterising the chemical and physical properties. Theophrastus is a Greek philosopher who lived during 371-287 B.C. Pliny the Elder during AD 23-79 was a Roman author, naturalist and naturalist philosopher. During this period there were 86 known metals.The first discovery of metals were Gold (Au) and Copper (Cu). Then four other metals were discovered. They were called Arsenic (As), Antimony( Sb),Bismuth (Bi) and Zinc (Zn).While the metals where discovered naturalists…

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…

as waste. The consequences of aluminum in the biotic cycle have already been manifested in the death of fish and trees in acidified surface waters and catchments respectively while the spread of acid soils is limiting plant growth on over 30% of the Earth's ice-free land. Most of the article is spent talking about the effects of aluminum on the body. There was a large amount of references the author used (98) and I think that shows his academic integrity. He also works at The Birchall Centre,…

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…

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…

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…

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…

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…