How to improve strength in ferrite powder compaction?

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What is the black spot on the tin plated surface, and why its happening after longer storage time? How can I reproduce such defect?

The base material is ceramic with 3 metallization layer: Ag, Ni and Sn.

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What is the recommended powder particle size ratio for ferrite powder compaction?

To achieve better strength.

06 July 2018 1,330 4 View

Ferrite core crack after sintering. During powder compaction no crack. Any suggestion why it's happening ?

ferrite powder after powder compaction proceed to sintering process. after sintering found out ferrite core have crack like blistering. sintering in vacuum atmosphere.

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Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

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How to reduce static electricity of powder after lyophilization?

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What kind of steel moulds are used for hot pressing metal powders?

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Are ZnS nanoparticles moisture sensitive?

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How does a freeze dryer destruct your solid sample?

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What is role of toluene and stearic acid in ball milling for powder ? In what weight percent we should add this to powder?

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Florian Glodeanu

I advise you to explore the following references: https://www.researchgate.net/publication/221927080_Powder_Injection_Molding_of_Metal_and_Ceramic_Parts http://cdn.intechopen.com/pdfs/33648/InTech-Ceramic_injection_molding.pdf

Saddam Amir

Thanks Florian for the references. I'll go through.

HASSAN ABDELWAHAB ABDELKARIM

Obtaining hard and tough (green strength) compact depends on many factors. However the powder density and compacting pressure play an important role . In addition, the use of an appropriate lubricant during sinter in process also can enhance the green strength.

How about sometimes discoloration occur after sintering using air atmosphere?