Ahmad Bahmani

13 Questions 26 Answers 0 Followers

Questions related from Ahmad Bahmani

Why pH is not raising after adding Tris in SBF (Kokubo instruction)?

According to Kokubo's instuction for preparing SBF (Simulated Body Fluid) pH should be increased from 2.0 to 7.4 after adding Tris to the solution. I added all additives one by one, and the pH...

11 November 2018 1,063 5 View

What is the best and cheapest way to produce sub-micron (as small as possible) Mg powder?

I need very fine Mg powder (atleast less than 1 micrometer) for spark plasma sintering (SPS). would you please let me know which way you suggest to produce (or even prepare or buy) sub-micron...

07 July 2018 1,933 6 View

What is the best method to measure the energy of grain boundaries and grains?

For Mg based materials, some materials can be etched using picric acid and then the grain boundaries appears clearly, but for some of them like pure Mg and Ca containing alloy, grain boudnaries...

09 September 2017 8,891 4 View

How to distinguish phases or phase orientations using SAED (TEM)?

Using SAED we would have some bright points reflecting the orientation of a specific phase? Would you please let me know how I can analyze them and get to know the related phase? Thank you!

07 July 2017 5,409 5 View

Fraction of an Orientation Using EBSD!

Would you please let me know how I can measure the fraction (volume or area) of different orientations using EBSD?

06 June 2017 2,769 5 View

Is it possible to achieve exact and fixed potential value in SKPFM (AFM) by a Cypher AFM?

Hi, I used a cypher AFM with SKPFM (SKPM) technique to measure the surface volta-potential distribution for Mg alloys. But for a bare surface which has just recently been polished, I can not find...

05 May 2017 8,245 6 View

How can I measure the area fraction of grains (distinguished by a pole figure (texture) in OIM (EBSD) software?

Hi, I am wondered to know how I can measure the area fraction of each color in OIM software which is utilized for EBSD images? for example I want to measure the area fraction of red colors in an...

10 October 2016 8,586 2 View

What is the best method to measure dislocation density?

I heard using XRD it is possible to measure dislocations density or observe them using TEM. I will appreciate if some one explain me how I can measure dislocation density? I also heard that...

01 January 2016 1,853 18 View

How can one obtain the fraction of specific planes using texture analysis by XRD (X'pert Pro)?

For a Mg alloy, I analyzed the texture by X'Pert Pro, from two samples of extrusion and extrusion followed by forging. Can some of tell me how I can compare the fraction of different planes in...

10 October 2015 9,389 1 View

How can one find the atomic position and space group of different intermetallics?

It is possible to find out the atomic position of some simple intermetallics via searching in the internet or literature. However, is there any source (reference, handbook, website) that shows the...

12 December 2014 4,302 7 View

How can I calculate Work Function using local potential in Materials Studio?

To calculate Work Function of a Crystal (Mg2Ca), using the following instruction (the url), I obtained local potential (attached pic). How can I obtain the value of work function of this...

12 December 2014 5,762 8 View

How to draw a hexagonal crystal in Materials studio (CASTEP)?

I am going to draw a hexagonal crystal for pure Mg, MgCl2 and solid solution mg phase with Materials studio. But I found some problem in drawing the crystal. For example for the case of Mg2Ca, I...

12 December 2014 8,379 5 View

How can I find out the atomic position of a crystal with known space group(using http://www.cryst.ehu.es/ website)?

In the following link, the atomic position of different space groups has been...

12 December 2014 8,890 15 View