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Phase Diagram and Phase Transformation Fig. 1 shows (FCC) Nickel-(BCC) Chromium binary phase diagram. The eutectic reaction takes place at 1345°C and the composition is 51% Cr and 49% Ni. The solid solubility of Cr in Ni is extensive which is evident from the phase diagram. Phase transformations of two Ni-Cr alloys are explained below. One is Ni40Cr60 (Line 2) which is closer to eutectic composition and contains greater % Cr and the other alloy is Ni68Cr32 (Line 1) which contains greater % Ni.…

series. The 56 (Ax56.1) identifies the alloy within the 3xx.x series. The .1 (Axxx.1) indicates that it is a final shape of ingot. The composition, physical, mechanical properties of A356.1 Aluminium alloy are shown in table 2.3, 2.4, 2.5 respectively. Table 2.3: A356.1 Aluminium alloy Composition. ELEMENT Weight Percentage Aluminium (Al) 91.73 Silicon (Si) 7.23 Iron (Fe)…

in the book is Hector sitting alone in the beginning of the book on the picnic table. The above image doesn’t have a specific name, but it reminds me of when the book says, “One day during grade school, he sat out back at the picnic tables during a sweltering day. No one was out…” (Drake 63). This quote indicates he is in fact, all alone. Although there were many images on the internet of a boy alone on a picnic table, this one just happen to stick out to me. When I read this part in the book, I…

The periodic table we know today is very organized and accurate. It shows all of the elements that have been discovered and has them arranged and by their chemical properties, atomic masses, and electron configurations. In order to construct the periodic table, every element had to be discovered. Elements such as gold, tin, lead, and copper have been widely known and used since ancient times, however, the first discovery of an element wasn’t made until 1649 by Hennig Brand when he discovered…

The history of piezoelectricity evolution is over 120 years which was discovered by brothers Curie in 1880. They were Pierre Curie (1859-1906) and Jacques Curie (1855-1941). During the study of the generation surface electrical charge by applying pressure on some material, they found out an unusual phenomenon which was a voltage of opposite polarity was generated by pressure was applied on the crystalline minerals such as quartz. The amplitude of the generated voltage was proportional to the…

Cerium is a rare earth element of the lanthanide series (atomic no. = 57– 71) of the periodic table. Among the various rare earth metals, cerium granted a hugeattention towards scientific community due to its catalytic antioxidant property. Usually, antioxidants protect cells from oxidative damage, mediated by ‘reactive oxygen species’ (ROS), which include free radicals such as superoxide anion (O2•-), hydroxyl radical (•OH), singlet oxygen (1O2) and non-free radical species like hydrogen…

Written exercise Paragraph 1 Iron phosphate, FePO4, has a very similar structure as quartz. Quartz has a trigonal lattice structure with space group P3121 (group no. 152). Similarly, at temperature below 980K, iron phosphate exists as α-FePO4, which also exhibits trigonal lattice structure with space group P3121 in which iron, phosphate and oxygen occupy Wyckoff position 3a, 3b and 6c respectively. In quartz, every silicon atom is connected to four oxygen atoms to form a network of…

The CGS framework retreats to a proposition in 1832 by the German mathematician Carl Friedrich Gauss to base an arrangement of supreme units on the three essential units of length, mass and time. Gauss picked the units of millimeter, milligram and second The centimetre–gram–second arrangement of units (truncated CGS or cgs) is a variation of the metric framework taking into account the centimeter as the unit of length, the gram as the unit of mass, and the second as the unit of time. All CGS…

same group or family are to be tested, one of the element reactivity will be slightly different from the other. This is the work of the periodic trends, the characteristics of an element atom change because of the element locations on the periodic table. The differences in characteristics of an element’s atom will make…

Chlorine is the second to lightest member of the halogen elements. It is in Group 17 (Group VIIA) and period 3 of the periodic table. The element symbol for Chlorine is Cl. Chlorine is a greenish yellow gas that is corrosive, toxic and can be irritating to the eyes and respiratory system. Chlorine is a nonmetal that has the atomic mass of 35.45 amu. It has a melting point of -100.98 degrees Celsius and a boing point of -34.6 degrees Celsius. However, at room temperature it is a gas. Chlorine…