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{
"metadata": {
"name": "",
"signature": "sha256:030c93395768b2f42836485175665cce8f1a2b5170495494504b4c018dda5636"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 12 :\n",
"Oxidation and Corrosion"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 12.1 Page No : 395"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\t\t\t\n",
"import math \n",
"\n",
"# Variables\n",
"D = 320*10**-3;\t\t\t#in meter\n",
"L = 1;\t\t\t#in meter\n",
"\n",
"# Calculation\n",
"A = math.pi*D*L;\t\t\t#Surface area in meter**2\n",
"l = (200/A);\n",
"\n",
"# Results\n",
"print 'the distance at which magnisium anode capable of giving 2MA = %.0f meters'%l\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"the distance at which magnisium anode capable of giving 2MA = 199 meters\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 12.2 Page No : 396"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\t\t\t\n",
"import math \n",
"\n",
"# Variables\n",
"W = 0.0243;\t\t\t#1 mole of magnesium weight(in Kg)\n",
"C = 2*96490;\t\t\t#used charge (in A-s)\n",
"A = 15*10**(-3);\t\t\t#current density (in A/metre2)\n",
"t = 10;\t\t\t#time (in years)\n",
"T = 10*365*24*3600;\t\t\t#time (in sec)\n",
"\n",
"# Calculation\n",
"#amount of magnesium required = charge required per m2 of hull surface for a design life of 10 years/(used charge for anode)\n",
"Mg_required = W*A*T/C;\t\t\t#magnesium required per square meter of the hull surface for a design life of 10 years\n",
"\n",
"# Results\n",
"print 'magnesium required per square meter of the hull surface for a design life of 10 years = %.1f Kg/m2'%Mg_required\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"magnesium required per square meter of the hull surface for a design life of 10 years = 0.6 Kg/m2\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
