why dose Martensite transformation occur easier in ordered structure rather than disordered structure?

31 December 2015 2,357 3 View

What are driving force and activation energy for below the mechanism in high temperatures?

1- Diffusion 2- Corrosion 3- decrease of dislocation 4- increase of vacancy 5-Phase Transformation 6- precipitation or resolved precipitation 7- Oxidation

02 March 2014 6,666 3 View

Slip systems in body centered cubic?

Show that the body-centered-cubic crystal have three families of slip systems, i.e. twelve slip systems of (110)[111]-type, twelve slip systems of (112)[111]-type and twenty four slip systems of...

31 December 2013 4,441 1 View

Why is the main criterion for nanomaterials is considered for dimensions smaller than 100 nanometers?

Seeking to find out the reasons behind this observation.

11 December 2013 719 3 View

No title

What is the number of carbon atoms in the (0, 3) unit cell of carbon nano tubes?

11 December 2013 1,885 0 View

How can I calculate the surface of nanoparticles?

How can I calculate the surface of nanoparticles? For example: how much is surface of 100 grams gold nano-particle with size of 20 nm? Or how much is surface of 100 grams gold micro-particle with...

11 December 2013 3,777 20 View

What is the natural color of objects related?

What is the natural color of objects related? All materials with change in dimensions (nano size) have changed color?

11 December 2013 5,638 1 View

Why with a decrease in grain size (nanometric size), the width of the X-ray diffraction of them increases?

Seeking to understand this relationship.

11 December 2013 3,047 18 View

How is XRD diffraction pattern of graphene, single-walled carbon nanotubes, and multi-walled carbon nanotube?

How is XRD diffraction pattern of graphene, single-walled carbon nanotubes, and multi-walled carbon nanotube?

11 December 2013 4,949 2 View

Why does the strength of Ni3Al compound increase with increasing temperature?

We know that the strength of materials decreases with increasing temperature. Why unlike the other materials does the strength of Ni3Al compound increase with increasing temperature?

10 November 2013 2,628 3 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Why Trivalent chromium start precipitating above PH 5 ? Moreover discuss difference between adsorption of chromium and precipitation of chromium ?

I am a student of MS Environmental Engineering and started my research phase. I am working on metal removal ( chromium iii ) by using activated carbon prepared from the agricultural feedstock. So...

01 March 2021 5,475 2 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Apart from Nanosilica and CNT's what are the other nanomaterials readily available to use in concrete mixture?

Nanotechnology in concrete materials

01 March 2021 3,379 3 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

How can I assign a velocity along one direction to CO2 molecules in a molecular dynamics simulation using GROMACS?

Dear all, I am trying to perform a MD simulation about the interaction between CO2 and a polymer. I create my model, solvate it and perform the NVT and NPT equilibration. Now I am not able to...

26 February 2021 10,014 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View