10. Discuss on the possible metals and their alloys which could be an ideal choice for replacement of finger joints. What are the relevant properties of this material?

Q: In the heating of most metal alloys, melting begins at a certain temperature and concludes at a…

A: The solidus is the highest temperature at which an alloy is solid – where melting begins.The…

Q: A solid crystal of NaCl is O a. soft, low melting, a poor electrical conductor. O b. soft, high…

A: Ionic solids are composed of cations and anions held together by electrostatic force of attraction.

Q: The standard free energy of formation of cubic silicon carbide (SiC) is 62.8 kJ mol-1 . Determine…

A: The change in free energy is used for the prediction of direction of the chemical reaction at…

Q: Silicon carbide, SiC, has the three-dimensional structureshown in the figure.(a) Name another…

A: a) To determine another compound that has same structure: The compound that has similar crystal…

Q: Explain how the overlap of atomic orbitals gives rise to bands in metals?

A: A metal is a substance with a lustrous appearance that conducts electricity and heat comparatively…

Q: Alloys have numerous advantages in industrial applications. Which combination of metals is…

A: A metallic substance composed of two or more metals is alloy. Here we have to tell which metals…

Q: Define the term ‘point defects’ Mention are main difference between stoichiometric and non-…

A: Define the term ‘point defects’ Mention are main difference between stoichiometric and non-…

Q: When two metals are completely insoluble in each other in the solid ate is called binary eutectic…

A: A binary eutectic system consists of homogeneous mixtures of two substances that melts or solidifies…

Q: (AlOOH) ore is the most preferred in aluminum production and hematite in iron production of the…

A:

Q: How does crystallinity affect the mechanical properties of materials.

A: Crystallinity affects the mechanical properties of materials. The thermal performances and…

Q: How is the steel used for the manufacture of metal structures and pipes for the transfer of…

A: Production of ingots1. Molten steel is manufactured by melting iron ore and coke (a carbon-rich…

Q: Calculate the equilibrium temperature (in °C) of 50 g molten solid at 200 °C which was poured into a…

A: Mass of solid,Ms = 50gMass of casting form Mcf = 200gInitial temperature of solid, Tis =…

Q: Carbon exists as several allotropes including buckminsterfullerene and carbon nanotubes. All are…

A: The existence of an element in more than one form, having the same chemical properties but different…

Q: c) Suggest and explain in detail one heat treatment procedure that can strengthen or harden the…

A: A metal when it is hardend,it is heated to a point where the element transform into a solution.

Q: what are alloys? give examples.

A: Alloys: Combination of two or more metals in order to enhance the chemical and physical properties…

Q: 58. Define the equilibrium vapor pressure of a substance. How and why does it depend on temperature?…

A:

Q: Construct a vis-à-vis comparison of different alloyed materials. Cite the advantages, disadvantages,…

A: Alloys are elements which are mixture of different metals or metal with non-metal . It alloys to…

Q: Shown here are sketches of two processes. Which of theprocesses refers to the ductility of metals…

A: Metals show different physical properties, they are, Malleability: They can be beaten or hammered…

Q: At a steelworks, molten iron is heated to1500° Celsius to remove impurities. It is most accurate to…

A: Correct answer is : (v) all three of these. Molten iron contains a large amount of (i)…

Q: Give name of any two alloys which contains nickel.

A: Alloy:An alloy is a combination of metals or metal combined with other elements.

Q: Which would you expect to be the more ductile element,(a) Ag or Mo, (b) Zn or Si? In each case…

A: Silver is a more ductile element than molybdenum. Ag has more valence electrons which makes the…

Q: TRUE OR FALSE: Metals at the lower position in the Ellingham diagram (ex: Aluminum Magnesium and…

A: Statement : Metals at lower position in the Ellingham diagram , are not stable and easily forms…

Q: (а) Give an example of zone refining of metals. (b) What is the role of cryolite in the metallurgy…

A: Metallurgy is the process which is more concern with the extraction and isolation of metals from its…

Q: For the alloy Mg-45 wt% Pb alloy at 500 C, what is the weight percentage of Pb in liquid?

A: Given: Mg-Pb Phase diagram To determine : The weight percentage of Pb in liquid for the alloy Mg-45…

Q: (d) Doping can be used to increase conductivity of the substances, explain with examples. What are…

A: Doping increases the conductivity as follows.

Q: For CO2 specie in column A, choose the description in column B that best applies A B CO2 (a) ionic,…

A:

Q: 1. Construct a vis-à-vis comparison of different alloyed materials. Cite the advantages,…

A: Materials that are formed by the fusion of 2 or more metals are called alloys. They exhibit wide…

Q: Sketch a diagram to illustrate the band structure of diamond, assuming no defects

A: The carbon atoms in diamond undergo hybridization and each carbon atom forms four sigma bonds with…

Q: Compared to pure metals, alloys are ...

A: ALLOY IS A MIXTURE OF TWO OR MORE ELEMENTS WITH CERTAIN  FIXED COMPOSITIONS MAJOR COMPONENT IS…

Q: Construct a band diagram for Aluminum. Please give an explanation.

A: In 1927, Walter Heitler and Fritz London discovered bands. Bands are very closely spaced orbitals…

Q: Crystalline: Diamond ; ____????____ : Graphite

A: Given: Crystalline: Diamond ; ____????____ : Graphite

Q: The karat scale used to describe gold alloys is based onmass percentages. (a) If an alloy is formed…

A: The karat scale is used to describe gold alloys is based on mass percentages.  It is given that…

Q: 1. What is the difference in melting characteristics between a pure metal element and an alloy…

A:

Q: Distinguish the gap between conduction band and valence band for metallic conductor and insulator.…

A: The conductivity of a material depends upon the gap between the valence band and conduction band.…

Q: Does a penny and calcite have the same hardness ?

A: Calcite and penny both have a hardness of 3.

Q: Write  few  lines on any  two types of   Metals  structure ( unit cells )  with    aid  of diagram

A:

Q: In general, the presence of an oxide film on the surface of a metal will a) Increase the rate of…

A:

Q: How do you describe the crystalline structure, and how does it form? What is the crystalline…

A: According to question it is asked to describe the crystalline structure,how it forms,crystalline…

Q: In the iron-carbon alloy phase diagram as shown in Fig. 1, draw the microstructures with indicating…

A: In the above given phase diagram, gamma is for austenite, alpha is for ferrite, Fe3C is cementite.…

Q: Explain how does the amount of current passed through the solution affects the rate of deposition?

A: According to guidelines, only first part has to be attempted. Amount of current affects the rate of…

Q: what are semi-conductors ? give examples.

A: Semiconductors are poorer electric conductors than metals but better conductors than non metals. Ex.…

Q: hypothetical alloy has a face centered cubic unil cell. Its density is 10.470 kg/m² and its atomic…

A: density = 10.470 kg/m3 atomic weight= 106.8 g/mole

Q: Give four examples of non-silicate minerals, and describe each example’s characteristic featur

A: Example of non-silicate mineral are pyrite(FeS2),  calcite(carbonate), hematite (oxide) and halite…

Q: Explain about passivation in metals

A:

Q: What temperature will be needed to heat treat copper such that the concentration of vacancies per…

A:

Q: Definition of cell electrically?

A: In this question, the definition of a cell has to be provided. An electric cell is defined as a…

Q: What is meant by the term coordination number in the structure of a solid? 2/ How does the…

A: [1.]  The number of atoms nearest to an atom in the crystalline structure is called the coordination…

Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.