ENGINEERING MATERIAL - EXAMPLE 12.2 : At 150 degree Celsius, a mixture of 40 wt % Sn and 60 wt % Pb present, forming phases of alpha and beta. Chemical composition of Sn at each phase : CO (overall) : 40 %, CA (alpha) : 11 %, CB (beta) : 99 %. (a) State 2 reasons for the existences of alpha and beta phases for the mixture of Sn - Pb at 150 degree Celsius. (b) By using Lever Rule, calculate the weight fraction of each phase for alpha, WA = Q / (P + Q) and beta, WB = P / (P + Q) where Q = CB - CO and P = CO - CA.
Answer Posted / kangchuentat
ENGINEERING MATERIAL - ANSWER 12.2 : (a) Reasons : (1) atomic radii difference; (2) different crystal structure. (b) P + Q = CO - CA + CB - CO = CB - CA, then WA = Q / (P + Q) = (CB - CO) / (CB - CA) = (99 - 40) / (99 - 11) = 0.6705. WB = P / (P + Q) = (CO - CA) / (CB - CA) = (40 - 11) / (99 - 11) = 0.3295. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the angle of repose and what are its applications in the chemical industry?
Name some factors to consider when trying choosing between a dry screw compressor and an oil-flooded screw compressor?
What are the advantages of using a ball mill over other conventional methods of crushing?
What is some common piping materials used to transport slurries?
What is the maximum permissible Earth to Neutral voltage in an electrical system.
i want sample inteview question of chemical engg for BARC
How can you estimate a gas flow based on two pressure measurements?
Define "good" cooling tower water?
Hi, I want to validate an analytical procedure of a specified impurity, but this impurity is unavailable for me. can I use the API instead of impurity in the linearity test? in Which reference can I find such information?
How can you determine the proper pipe thickness for a slurry line?
How does a cyclone separator work?
what are the chemicals used in PFR and MFR to Process?
Mention some of the specialized grinding methods?
Explain how can I evaluate the thermal relief requirements for double block-in of 98% sulfuric acid?
What chemical is used to expand air bags in such a short amount of time?