1000 b.) Calculate the weight percent eutectoid cementite present in the steel. 900 800 y +a y + Fe,C 0.02 723°C 700 c.) Calculate the weight percent eutectoid ferrite present in the steel. 600 Fe,C 500 a + Fe,C 400 0.4 0.8 6.67 100% Weight percent carbon Fe 2. A 1.57 percent C hypereutectoid plain-carbon steel is slowly cooled from 980°C to a temperature just slightly below 723°C. a.) Calculate the weight percent proeutectoid cementite present in the steel. Temperature (°C)

1000 b.) Calculate the weight percent eutectoid cementite present in the steel. 900 800 y +a y + Fe,C 0.02 723°C 700 c.) Calculate the weight percent eutectoid ferrite present in the steel. 600 Fe,C 500 a + Fe,C 400 0.4 0.8 6.67 100% Weight percent carbon Fe 2. A 1.57 percent C hypereutectoid plain-carbon steel is slowly cooled from 980°C to a temperature just slightly below 723°C. a.) Calculate the weight percent proeutectoid cementite present in the steel. Temperature (°C)

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter23: Potentiometry

Section: Chapter Questions

Problem 23.12QAP: What arc the advantages of microfabricated ISEs? Describe typical applications of this type of...

See similar textbooks

Similar questions

In a system ABC, a ternary alloy with composition of 30 wt. % B and 30 wt. % C consists at a particular temperature of three phases of equilibrium compositions as follows:Liquid phase: 50 % A, 40 % B, 10 % Calfa solid solution: 85 % A, 10 % B, 5 % Cbeta solid solution: 10 % A, 20 % B, 70 % Ca. Plot the composition of the alloy.b. Calculate the proportion by weight of liquid,  and  present in this alloy.c. For the same temperature, find the composition of the alloy which will consist of equal proportion of  and  phases of the compositions stated above, but with no liquid phase.
JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from thefurnace, JJ was upset to find a big hard lump., After grinding up to the lump, someone told JJ to add a sintering aid and deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch in diameter. How could JJ do this well? JJ needs this size ceramic rod for experiments.
For a Copper-Nickel (Cu-Ni) alloy of composition 25 wt % Ni and 75 wt % Cu at 1200 OC (Point B), refer to the phase diagram provided in Figure 2 and answer the following. (i) What is composition of liquid phase? (ii) What is composition of solid phase? (iii) What fraction of the system is liquid for a 25% Ni alloy at 1250 OC? (iv) What fraction of the system is solid for a 25% Ni alloy at 1250 OC?
Q. What are the advantages of pyrolytic graphite coatings for furnaces? Q. Why is argon preferred to nitrogen as the purge gas? Q. Why are fast response electronics and background correction essential when using furnace atomization?
A single crystal Ni (in FCC) alloy bar is uniaxially pulled along [-123]. The bar starts to yield at σ =100MPa by slipping on (111)[-101] which hence is the most favorable slip system.
A 90 wt% Ag-10 wt% Cu alloy is heated to a temperature within the β + liquid phase region. If the composition of the liquid phase is 85 wt% Ag, determine:(i) The temperature of the alloy(ii) The composition of the β phase(iii) The mass fractions of both phases
(d) By using the data provided below, calculate the PillingBedworth ratio for the nickel (Ni) – nickel oxide (NiO) system and determine whether NiO is protective against corrosion. Atomic mass of nickel = 58.7 g.mol-1 Density of nickel = 8.91 Mg.m-3 Molecular mass of nickel oxide = 74.7 g.mol-1 Density of nickel oxide = 6.67 Mg.m-3 (e) A stainless steel pressure vessel that has fracture toughness, K1C, of 197 MN.m-3/2 is going to be exposed to a stress of 398 MN.m-2 . By using this information explain how designers can determine the thickness of the vessel so that catastrophic failure can be avoided.
blast furnace makes pig iron containing 3.6% C, 1.4% Si and 95% Fe. The ore used contains 80% FE2O3, 12% SiO2 and 8% Al2O3. The coke analysis shows the presence of 10% SiO2 and 90% C. The flux used is pure CaCO3. The exit gases contain 28% CO and 14% CO2. The coke ratio is 1000 kg/t pig iron. Flux is 400 kg/t pig iron. Calculate per tonne of pig iron: (a) the weight of the slag made, (b) the weight of the ore used, (c) the composition of slag the air required at NTP.
11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the furnace, JJ was upset to find a big hard lump. Explain to JJ what happened. b) After grinding up to the lump, someone told JJ to add a sintering aid and deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch in diameter. Do you have any suggestions for JJ? JJ needs this size ceramic rod for experiments.
11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from thefurnace, JJ was upset to find a big hard lump. Explain to JJ what happened. (10 points)12) Continue to Question 9, After grinding up to the lump, someone told JJ to add a sintering aidand deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch indiameter. Do you have any suggestions for JJ? JJ needs this size ceramic rod for experiments. Number 12 please the information in question 11 is applicable.
GRAVIMETRIC ANALYSIS The addition of dimethylglyoxime, H2C4H602N2, to a solution containing nickel(Il) ion gives rise to a precipitate: Nickel dimethylglyoxime is a bulky precipitate that is inconvenient to manipulate in amounts greater than 135 mg. The amount of nickel in a type of permanent-magnet alloy ranges between 22% and 38%. Calculate the sample size that should not be exceeded when analyzing these alloys for a nickel.
The addition of dimethylglyoxime, H2C4H602N2, to a solution containing nickel(Il) ion gives rise to a precipitate: Nickel dimethylglyoxime is a bulky precipitate that is inconvenient to manipulate in amounts greater than 135 mg. The amount of nickel in a type of permanent-magnet alloy ranges between 22% and 38%. Calculate the sample size that should not be exceeded when analyzing these alloys for nickel.