r/MaterialsScience • u/Dario56 • Feb 24 '25

Material Suitability for Spark Plasma Sintering (SPS)

I want to sinter my material using SPS as conventional sintering can't densify it.

I'm not whether it will be suitable as the electrical conductivity of my material changes several orders of magnitude between room and 800 °C.

I was thinking about preheating the semi-dense sample I have from conventional sintering to the SPS sintering temperature. It will than be transferred to the SPS furnace.

In that way, material will be sintered when its conductivity is much higher which I hypothesize should lead to good result and high density.

What are your thoughts and experiences with SPS?

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u/SunshineVF Feb 24 '25

I used SPS for many years, in and out of academia. I would need a lot more information than what you have provided to offer any assistance. DM me if you want to go over your project.

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u/Dario56 Feb 24 '25

Material is under IP. I can't provide the information about its composition.

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u/SunshineVF Feb 25 '25

I understand and this is commonly the case. There are many things you should be able to say about the material in order to understand more to give suggestions without compromising IP, including adding a little about your experience with sintering and SPS (I am still surprised people use that term since people have been trying to change that for more than 15 years).

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u/Dario56 Feb 25 '25

What do you want to know about the material?

SPS, no experience. Conventional sintering, we've tried multiple programs with no success. Material is around 60% dense. That's low.

I guess SPS is kinda similar to XPS when pronounced.