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Materials & Chemical Engineering

- Properties of matter and its applications. Metal Production, Fabrication, Distillation, Corrosion
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Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:01 PM
chemisttree
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Hi, I am currently working on creating a portable rollable ballerina flat which can be easily transported in a...
Mar2-12 02:24 PM
turbo
7 3,943
So for this research paper, I'm looking at generally how much it costs to heat up a room. So what I'd like to know...
Mar3-12 08:47 PM
abc617
0 2,392
What the relationship between catalyst and thermodynamic. In activation energy as we know, it reduces the activation...
Mar3-12 11:15 PM
chemisttree
1 1,172
Is anyone interested in starting a discussion on this topic? I use them in designs, but don't understand the...
Mar4-12 08:05 AM
Pkruse
2 2,458
Hi, I am having a trouble to figure the number of lattie point in FCC structure out. My text book said simple cubic...
Mar5-12 08:01 AM
spf
3 3,364
I am trying to find static hardness values for a range of pure metals in MPa. After trawling through books and...
Mar6-12 04:45 AM
gg_1
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I'm studying in a class about phase transformations, and have a couple of questions needing answers/clarification: ...
Mar7-12 06:23 PM
LynnCGL
0 1,018
I read somewhere that silica aerogels hold 15 world records, but I can't find what they are. Obviously lowest density...
Mar7-12 06:23 PM
BLOHS7844
1 1,296
HI. So I feel I have a pretty basic but good understanding of quenching and tempering processes (talking about...
Mar8-12 09:09 PM
Elquery
0 1,171
I came across a model for fatigue failure where the concept of fatigue modulus is introduced. The resulting...
Mar9-12 02:03 AM
fpdlskf
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I am working on a prototype for a laser component. We have a stainless steel box, that is flooded with water for...
Mar9-12 08:04 AM
Khowe9
0 1,101
How do you calculate the surface atom density of an fcc(111) surface expressed in terms of a? I've managed to do it...
Mar10-12 10:51 AM
vincent_vega
3 2,555
Hello every body, I'm from Vietnam. I have a question that : if we decrease the size of the grain of metal by heat...
Mar10-12 11:00 AM
pukb
2 4,015
So I have been reading up on composite materials and have been geting a bit confused, from what I have read, composite...
Mar10-12 11:38 AM
examorph
5 1,530
I have been geting confused with injection moulding, could somebody please help me.
Mar11-12 11:37 AM
examorph
1 1,117
I am finding dificult finding answers to a few questions I had.
Mar12-12 01:38 PM
examorph
1 1,145
Hi everybody :smile: my first post here and I wonder can you recognize and name this two alloys? first: Ni27.5%...
Mar12-12 10:12 PM
madstudio
6 1,715
Hi all This is my first time here and I'm hoping first that I have reached the right forum for my question and that...
Mar15-12 09:11 AM
archer545
0 1,144
Hi all I want you to give a comparison between PTFE / PCTFE / Viton / EPDM O-ring considering these points : ...
Mar15-12 10:50 AM
cherly
6 15,859
Hi, I have some experiemntal results of a material - experiments performed being simple tension test,compression...
Mar15-12 01:16 PM
svishal03
0 1,152
I have an application that involves forming 2024 aluminum in the T42 state. I need to determine the amount of elastic...
Mar16-12 10:04 PM
Ivan Seeking
2 1,655
I need to compute the yield point for an experimental true stress vs true strain plot of a material as attached in the...
Mar17-12 05:51 AM
kvpl
6 3,888
Dear all, Does anyone of you know the name of some materials that self-decompose in anaerobic conditions...
Mar19-12 03:15 AM
EskimoLolol
5 1,686
Hi I've been trying to find effective thermal conductivity of sintered bronze, especially of that used in...
Mar19-12 05:43 PM
ikekite
2 1,959
Hello, I have a question. What is the maximum stress that a Si body can experience when it is loaded in a uniaxial...
Mar20-12 05:56 PM
fsaizpoy
0 1,153
I have a little question about waves. Waves deform its medium elastically. For example: sound waves will propagtae...
Mar21-12 04:09 AM
HWGXX7
2 1,358
THE TEMPERATURE DEPENDENCE OF THE ENERGY GAPS IN SEMICONDUCTORS Where I can find text about this topic and models...
Mar21-12 02:01 PM
M Quack
1 1,332
Anyone has any idea on what are the types of sers substrate available? if so. any companies?
Mar21-12 10:03 PM
Alean
0 1,187
Here is the problem: The bars of a saddle, which rest on a horse's back, rarely completely conform to the exact shape...
Mar22-12 08:11 AM
HowlerMonkey
5 2,429
is it possible to separate ions in base water solution using electrostatically charged scoops. For example: is it...
Mar22-12 08:49 AM
sr241
0 1,194
Estimate the approximate temperature for a cutting process with turning lathe, in which the diameter of a rod made of...
Mar23-12 07:51 AM
lastX
0 1,430
does forming OH- ions in water base solution absorb energy ? How this mechanism works, from stable molecules to...
Mar23-12 09:44 AM
sr241
4 1,736
how are microstructures of alloys different when slowly cooled and precipitation hardened?
Mar25-12 08:48 PM
Astronuc
1 1,633
A feed contains 30 mol% CH4 and 70 mol% O2. The CH4 and O2 react to produce CO2 and H2O. The H2O/O2 ratio in the...
Mar26-12 06:58 AM
chem_is_lovex
0 1,095
I need to derive the lattice parameter in terms of the Zn-S separation distance, l. I looked up the value and I've...
Mar26-12 07:40 PM
emmanuelpn
1 2,607
I was reading the Considere's criteria:for necking. The link:...
Mar27-12 12:25 PM
svishal03
0 2,060
Can somebody explain why strength increases with decrease in dendritic arm spacing. Please talk about mechanisms of...
Mar27-12 08:48 PM
pukb
0 1,403
Hi. I am working on visualization of flow with thermal infrared camera. As it is known, water is not transparent for...
Mar28-12 04:24 PM
Omenus
0 1,165
I’ve been struggling with this for quite some time and will be grateful if someone can help me. I have got the data...
Mar28-12 09:45 PM
afreiden
1 2,157
HI, i guess this might have been answered prieviously. Can someone tell me the solution for transient conduction in...
Mar29-12 07:36 AM
anuragn
0 1,697

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