Determine the diffusion time required at 600oc the

Assignment Help Mechanical Engineering

Reference no: EM13609546

The wear resistance of a steel shaft is to be improved by nitrogen hardening of its surface. The initial nitrogen content of steel is 0.002 wt%, whereas the surface concentration during heat treatment is maintained at 0.50 wt%. A nitrogen content of 0.1 wt % is desired at a position of 0.40-mm below the surface. (a) Determine the diffusion time required at 600^oC. The pre-exponential and activation energy for diffusion of nitrogen in steel is given as 3X10-7m²/s and 76.15 kJ/mol, respectively. (b) What time will be required at 500^oC to produce the same result (in terms of concentration at a specific depth) as for 10-hours at 600^oC?

Reference no: EM13609546

Questions Cloud

Consider the task of scheduling five jobs abcd and e which : consider the task of scheduling five jobs abcd and e which needs 5423 and 3 hours respectively on machine 1 and 3144

Assume that at january 1 2014 the carrying amount of the : assume that at january 1 2014 the carrying amount of the patent on celine dions books is 43200. in january celine dion

Custom shoes co has gathered the following information : 1.custom shoes co. has gathered the following information concerning one model of shoes variable manufacturing costs

Heedy company is trying to decide how many units of : heedy company is trying to decide how many units of merchandise to order each month. the company policy is to have 20

Determine the diffusion time required at 600oc the : the wear resistance of a steel shaft is to be improved by nitrogen hardening of its surface. the initial nitrogen

An object floats in the water with 60 of its volume : an object floats in the water with 60 of its volume submerged. what is its approximate density?a 400kgm3b

Woodpecker co has 296000 in accounts receivable on january : woodpecker co. has 296000 in accounts receivable on january 1. budgeted sales for january are 860000. woodpecker co.

The gauge pressure at the bottom of a cylinder of liquid : the gauge pressure at the bottom of a cylinder of liquid is 0.30atm. the liquid is poured into another cylinder with

A hollow shaft has an outsaid diameter of 35 mm and an : a hollow shaft has an outsaid diameter of 35 mm and an insaid diameter of 25 mm complute the torsional shear stress in

User Account

All Pages