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Questions related from Hossein Ahmadi
Amorphous silicon has lower volumetric change than crystalline silicon during first cycles of charge and discharge. How can we prepare amorpous silicon from nanostructured crystalline silicon? Is...
11 November 2019 2,507 4 View
What are suitable reagents for removing oxide layer and grease or organic impurities from copper surface before the coating process?
08 August 2019 3,008 4 View
Any reagent for revealing microstructure, electroetching, chemical etchin, or other methods. I need the colorful microstructure image. I only need the artistic aspect of images!
07 July 2019 6,262 3 View
High energy ball milling used to prepare silicon micro and nano particles. I used magnetic separation to remove iron. But there is a small amount of iron left in the suspension. How can I remove...
07 July 2019 4,383 2 View
It's a coating with few micrometers in thickness. There are equations for thickness prediction. But for using them, I need to know the coating density. I'm using spray coating method. The...
07 July 2019 6,939 4 View
In the attached picture, rolling direction is from bottom to the top(vertical).
02 February 2018 1,988 0 View
Does anyone knows a reference book that describes this phenomena? Are flow lines and shear bands the same or they're different from each other? why flow lines appear in micro structure? (Attached...
02 February 2018 3,160 0 View
can we see the grains and grain boundaries without using any etching procedure by SEM?
12 December 2017 8,080 2 View
sheet edge geometry change, workability limitation or something else?? Does anyone have studied about that?
10 October 2017 4,679 3 View
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09 September 2017 3,541 0 View
I need to achieve maximum impact energy and hardness at the same time.Any experiment or reliable article??
09 September 2017 9,826 2 View
And an special heat treatment for modifying tensile strength and impact energy of this alloy?
08 August 2017 477 0 View
05 May 2017 6,685 0 View
Is it because of avoiding the pores in the final product or reducing friction or something else?
04 April 2017 6,761 1 View
According to diagram below,UTS and elongation decrease as dendrite cell size increases,but tensile strength remains unaffected.The diagram's source is (Aluminum and aluminum alloys) handbook.
03 March 2017 3,384 3 View
Negetive gibbs free energy difference is needed for a process to proceed,but in nucleation during solidification process,there is a positive (delta G) and nucleation happens right at (critical...
03 March 2017 4,878 2 View
