Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
5.10 Show that
In this expression, when the x = 0 position is taken as the initial diffusion couple interface, then C1 is the impurity concentration
for x 6 0; likewise, C2 is the impurity content for x 7 0.
B x2
Cx= 1Dtexp a-4Dt bis also a solution to Equation 5.4b. The pa- rameter B is a constant, being independent of both x and t.
5.11 Determine the carburizing time necessary to achieve a carbon concentration of 0.30 wt% at a position 4 mm into an iron-carbon alloy that initially contains 0.10 wt% C. The surface concentration is to be maintained at 0.90 wt% C, and the treatment is to be conducted at
A diffusion couple composed of two platinum-gold alloys is formed; these alloys have compositions of 99.0 wt% Pt-1.0 wt% Au and 96.0 wt% Pt-4.0 wt% Au. Determine the time this diffusion couple must be heated at 1000°C (1273 K) in order for the composi- tion to be 2.8 wt% Au at the 10 mm position into the 4.0 wt% Au side of the diffusion cou- ple. Preexponential and activation energy values for Au diffusion in Pt are 1.3 X 10-5 m2/s and 252,000 J/mol, respectively.
write a program to generate an array of the series1491614916.....................14916where the short repeating pattern
As fresh poured concrete hardens, the chemical transformation releases energy at a rate of 2 W/kg. Assume the center of a poured layer does not have any heat loss and that it has an average heat capacity of 0.9 kJ/kg K. Find the temperature rise d..
Air is compressed by 10.50-kW compressor form P1 to P2. The air temperature is maintained constant at 26ºC during this process as a result of heat transfer to the surrounding medium at 10ºC. Determine the rate of entropy change of the air.
b) What is the value of the ac power that can perform the same amount of work as a 24 dc 0ne ?
An air compressor operates under steady conditions. Air is compressed from an initial state of 295 K and 101 kPa to a final state of 430 K and 340 kPa. Ignore heat transfer between the compressor and surroundings and ignore kinetic energy and potenti..
a smaller power plant produces steam at 3 mpa 600 c in the boiler. it keeps the condenser at 45 c by transfer of 10 mw
How can the shaft output speed of a fixed-displacement motor be changed?
determine the microstructure for eutectoid steel that has undergone the following heat treatment. for each heat
A project that will cost $750,000 will require payments as certain milestones are met. The initial payment is $50,000. When 30% of the work is complete an additional payment of $200,000 is due. When 70% of the work is complete another payment of $..
a steel cylinder of mass 2 kg contains 4 l of liquid water at 25oc at 200 kpa. find the total mass and volume of the
Two standard gears have a diametral pitch of 12 and a velocity ratio of 7.0. The center distance is 8 in. Determine the number of teeth on each gear.
Design economical sustainable solar charging substitutes to the universities current method. This applies to both applications for university golf carts and student use on campus.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd