Courses given by the Department of Metallurgical and Materials Engineering


Course Code: 5700466
METU Credit (Theoretical-Laboratory hours/week): 3(3-0)
ECTS Credit: 5.0
Language of Instruction: English
Level of Study: Undergraduate
Course Coordinator: Prof.Dr. ALİ KALKANLI
Offered Semester: Fall Semesters.

Course Objective

1.Correlate the processing techniques and powder shapes and particle size distribution. 2.Characterize the metal and ceramic powders, perform screen analysis, measure mean particle size and draw log-log or semi log particle size distributions. 3.Propose a suitable metal powder production technique for a particular P/M problem. 4.Measure the flow, apparent and tap densities, predict the shape and interparticle friction for an unknown powder sample. 5.Prepare powder mixtures containing lubricants and perform green compaction, measure compaction ratios for a particular geometry. 6.Chose the correct atmosphere, temperature and furnaces for sintering, identify the sintering stages, measure the sintered densities. 7.Propose correct processing conditions and alloy specifications for pore elimination and densification. 8.Calculate the chamber size of an atomizer, solidification time and cooling rate of a droplet, optimum rotation speed of a mixer or ball mill, average or transmitted pressure during compaction, ejection pressure, fractional porosity as a function of applied pressure, stress associated with curvature difference during sintering, grain size of a P/M material after sintering.

Course Content

Principles of the P/M process. Powder characterization, properties of metal powders and their testing. Methods of metal powder production. Precompaction powder handling. Compaction processes. Densification mechanisms. Sintering theory. Liquid phase and activated sintering. Sintering atmospheres and furnaces. Full density processing. Finishing operations. Compact characterization.

Learning Outcomes

Students apply sintering theory for powder compaction and consolidation and design special P/M parts.