MLL365
| MLL365 | |
|---|---|
| powder Metallurgy | |
| Credits | 3 |
| Structure | 3-0-0 |
| Pre-requisites | MLL262 |
| Overlaps | MCL133 |
MLL365 : powder Metallurgy
[edit]Introduction – Historical background, important steps in powder metallurgy (P/M) process – Advantage and Limitations and Applications. Methods – Production of ceramic powders, automation, rapid solidification technique. Characteristics: sampling – chemical composition, particle shape and size analysis, Surface area, packing and flow characteristics, Porosity and density, compressibility, Strength properties. Blending and mixing of metal powders; Compaction of powders, pressure less and pressure compaction techniques, Hot temperature compaction – Uni-axial hot pressing, Hot extrusion, Spark sintering, Hot isostatic pressing, Injection moulding – Sintering: Types, Theory, process variables, Effects, atmospheres, metallographic technique for sintered products. Post sintering operations; Products: Porous parts, sintered carbides, cermets, dispersion strengthened materials, electrical applications, sintered friction materials. Atomization, Mechanical alloying, Metal Injection moulding, Microwave sintering and self propagating high temperature synthesis.