Explain how a form of boron nitride known as hexagonal boron nitride is used as a solid lubricant. Compare this form to two forms of carbon: diamond and graphite.

Q: Calculate the number of vacancies per cubic meter for some metal, M, at 806°C. The energy for…

A:

Q: 1. Calculate the composition of a lin (Sn)/ lead (Pb) alloy Lhat has the lowest melting point. Plot…

A: FIBER REINFORCEMENT 1.The properties of fiber reinforcement composites depend upon the following…

Q: Describe how you would determine the indices of given crystallographic directions.

A: First determine the coordinates of the head and tail of the arrow representing the crystallographic…

Q: Sketch a diagram showing impact energy as a function of temperature, of (i) 0.1% carbon steel; (ii)…

A: given; sketch a diagram showing impact energy as a function of temperature of (i) 0.1% carbon steel…

Q: Calculate how many billion years it will take to build 1 mole of a molecule with a formula of…

A:

Q: make a sketch of theodolite and label its pa

A: Theodolite is an instrument designed for measuring angular measurements. It is one of the most…

Q: (a). Graphite and diamond are both made from carbon atoms. Kedua-dua grafit dan intan adalah…

A: For solution refer below images.

Q: Calculate the theoretical yield strength of aluminum. The Young's modulus of aluminum is 70 GPa, and…

A: Given that, Young's Modulus of aluminum, E=70 GPa,Poisson's ratio, μ=0.3,Measured yield strength of…

Q: give their properties and composition of stainless steel pewter

A: Stainless Steel Pewter : the pewter is is mainly brushed nickel with a highly satin finish which…

Q: Calculate the surface to volume ratio of nanomaterials obtained by breaking a cube of bulk material…

A: Given:The edge of the bulk cube is .The number of small cubes is .Formula used:The expression for…

Q: Why the Limestone is used into the blast fumace to produce pig iron? Why the Aluminium has…

A: (1) Limestone is used to remove impurities in the furnace and the main impurity of the blast furnace…

Q: List two interstitial elements that can be added to a metal to improve its strength properties.  2.…

A: Answer 1. Molybdenum like chromium added to steel to increase the corrosion resistence and it also…

Q: Ceramics have limited ductility because their bonds tend to be Directional. Nondirectional. O…

A: Ceramic materials generally brittle and shows very little ductility or plastic deformation under…

Q: Give some advantages and disadvantages of the high tensile strength nanowires when it is made by the…

A: It is asked to write the advantages and dis-advantages of the high tensile strength nanowires

Q: Explain and discuss briefly: (1) Whether a larger fracture toughness is associated with an…

A: 1) In general, a larger fracture toughness is associated with a slowly cooled Fe-0.6wt%C product…

Q: Experimental results on a cubic single crystal metal indicate that one of the following slip systems…

A: Given:To find:Critical resolved shear stress.

Q: What are high density and hard alpha inclusions in titanium metallurgy? Explain the method of…

A:

Q: weight % of C in

A: Given data; Atomic weight of Fe = 65And that of carbon C=14For the data given, Find the weight…

Q: Explain the concept of zone refining and also explain the refining technique for germanium ingot.

A: Given Germanium ingot To find Zone refining Germanium ingot refining

Q: Arrange the Young's moduli of the elements from Na to Si in order of increasing atomic number and…

A: Young's modulus is inversely proportional to atomic radius which is in turn is directly proportional…

Q: (b) Electrolytic Tough Pitched Copper is often used in telecommunications applications. Justify why…

A:

Q: Why is nitriding better than carburizing for many applications?

A: Surface hardening by nitriding heat treatment process occurs at a lower temperature in comparison to…

Q: Calculate the Degree of Crystallinity of the composite having mineral particles of 15(%) by weight…

A: Given data: Weight fraction of the particle = 15% Enthalpy of crystallization (ΔHC) =  24.4 (J/g)…

Q: What engineering application can we use nonferrous metal? Explain the type of materials that you use…

A: The materials which doesn't contain iron as it's major constituent are generally known as non…

Q: If we strain an FCC and an HCP single crystal, which of the two will have a larger amount of easy…

A: In HCP single crystal allows slip on the densely packed basal {0001} planes along the <1120>…

Q: Describe three (3) main differences between the Modulus of toughness and the Modulus of risilience…

A: Here is some difference between modulus of  toughness and modulus of resilence

Q: Write down the correct miller index notation for any direction that is perpendicular to the…

A: Miller indices are used to specify directions and planes. a set of indices does not define movement…

Q: Estimate the number of atoms that exist in a cubic centimeter of a solid material. This process will…

A: Given, Density = ρ = 6.11 g/cm3Molar mass = M = 50.942 g/molVolume = V = 1 cm3   We will first find…

Q: Calculate the density of Ag with miller indices of (1 0 1)

A: Givensilver ,Agmiller indices 1,0,1

Q: Explain the Solvothermal synthesis route using an example of a material.

A: Solvothermal processes are defined as reactions or transformations of precursors in the presence of…

Q: (c) Explain the reason of FCC metals are often recommended for use at low temperatures, particularly…

A: The brittleness of the material is  inversely proportional to the impact strength of the material.…

Q: (a) Explain the differences between metals, polymers and ceramics in terms of its atomic structure…

A:

Q: lease Explain it in details Compare and Contrast Material Properties of Lead and Plastic

A: Mechanical properties are the physical characteristics that a material displays when forces are…

Q: Why would I elect to use grey cast iron rather than a low-carbon steel? Why would I want austenitic…

A: Why would I elect to use grey cast iron rather than a low-carbon steel? Gray cast iron has excellent…

Q: a. Calculate the average density of aluminum bronze (95% Cu, 5% Al) Density of Cu and Al are 8.94…

A: Average density for aluminium bronze can be determined as

Q: H.W: what are the bonding and structure of graphite, explain why graphite is a good solid lubricant.

A: Graphite is a form of Carbon which is arranged in 6-membered hexagonal rings as sheets with van der…

Q: Explain , why you would/would not use XRD for the characterization of glass

A: Basically X Ray Diffraction technique is used for characteristics of crystalline materials...

Q: A polycrystalline metallic material has a higher yield strength compared to mono crystalline…

A: Polycrystalline material: A material that made by the combination of many small crystallites with…

Lubricants

Lubricant can be expressed as the substance that is applied among surfaces to control the wear and tear and improve performance. Lubricants play an essential part in the safety of machinery components like gears, shaft, linkage, cam, clutches, and many others. The quantities which affect the amount of lubricant are temperature, surrounding conditions, speed of the components, and many more.