How does flow stress influences increase in porosity ?

What are the various reasons for increasing porosity in powder metallurgical composites?. And how flow stress relates to porosity.

03 April 2018 7,689 3 View

Does addition of zinc stearate to metallic powders of iron, copper, aluminium etc in Powder metallurgy brings in problems?

In powder metallurgy stearates are added while mixing of powders in order to facilitate compaction. Further these stearates are removed during dewaxing. If zinc stearate is added as a lubricant...

01 February 2017 1,175 5 View

How to read oxidative wear in SEM image?

10 November 2016 6,482 2 View

Compressive strength of Composites at high temperature?

I wanted to know the approximate reasoning for the decrease in compressive strength of Fe based composite at high temperature (500 degree Celcius).It would be a kind gesture if some one provides...

09 October 2016 5,824 3 View

Porosity?

What is the easiest way to calculate porosity in sintered alloys.

03 April 2016 7,964 7 View

How to calculate relative density?

03 April 2016 6,267 4 View

Location of Oxides formed on Iron based material?

02 March 2016 8,465 2 View

How to calculate wear rate?

If some one can clarify as to what formulae is best for calculating wear rate in case of composites.

02 March 2016 5,599 17 View

Can iron oxides such as Fe2O3, Fe3O4 be used as solid lubrication?

Iron oxides possess good hardness and is it possible that these oxides help in reduction of friction at 500 degree celcius

02 March 2016 3,010 8 View

Can anyone confirm the formation of Oxides formed on Iron based material?

It would be humble gesture if some one could confirm the formation od oxides in the attached SEM image as it is the image of sample tested for wear at 500 degree celcius

02 March 2016 6,369 2 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 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

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

How to delaminate copper in water-based anodes?

Hello everyone, I'm looking for a way to delaminate copper current collector of water-based anodes in Li-ion batteries without damaging the graphite film. I tried different materials such as HNO3...

24 February 2021 3,785 3 View

Thermal reduction of graphene oxide.?

I am trying to reduce graphene oxide by thermally but I have no proper information regarding this. Can any one help me regarding the details about temperature and time for the reduction of...

23 February 2021 4,155 4 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 View

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

How to construct different filler shape in MD simulations?

Is there any way to construct different initial filler shapes like triangle, square, rectangle, pillar, and tube in any simulation software.

20 February 2021 1,750 1 View

What are the potential shell well and atomic solvation parameters for the boron atom?

I have a protein-ligand docking project. The ligand contains boron atoms that are not detected by Autodock software. To solve this problem, it is necessary to introduce the boron atom to...

19 February 2021 1,236 1 View