Dear researchers,
In my work, i focus on alloy formation in Ti,Al,Cr,V and B using ball milling process,
instead of crystalline Boron powder if i use amorphous boron powder during ball milling, will it make a difference?
One part of the work, when dispersed, goes to the work of volumetric deformation (elastic and or plastic). The second part of the work is necessary for surface formation. Amorphous boron is plastic and will not scratch the surface of the mill. Crystalline boron powder is very hard. It will scratch the material of the mill and the metal will shift into your alloy. It is better to use amorphous boron.
The high energy ball milling is so sensitive to the crystalline and crystallographic of metalic powders. there are afew parameter that I recommend for you to conisder and mention below with the proper reference,
In high energy ball milling, a suitable powder charge (typically, a blend of elemental) is processed in a high energy mill, along with a suitable milling media. The objective of milling is to reduce the particle size and blending of particles to produce a fine grained blend and/or new phases. The kinetics of mechanical milling or alloying depends on the energy transferred to the powder from the balls during milling. The energy transfer is affected by many parameters such as the type of balls, the ball to powder weight ratio (BPR), milling speed, size of the balls, temperature of milling and the milling time
http://www.sciencedirect.com/science/article/pii/S027288421400248X
Dear Sekharan,
There are so many research papers on this topic.
If possible you can try to read Mechanical alloying by C Surya Narayana.
As I know you are from SRM, you can meet either Prof. B.S. Murty from MME or VRK Murthy from Physics, IIT Madras. They will give right suggestions. BSM is doing on this work from a decade on wards. I wish you good luck.
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