This paper promises low temperature sintering of silicon carbide, a material that traditionally requires extreme conditions to sinter. Is this really sintering, or something else?
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==== Details ====
Kalemtas, Ayse, et al. "Starch consolidation of SiC ceramics: Processing and low-temperature sintering in an air atmosphere." Journal of Asian Ceramic Societies 8.1 (2020): 106-115. https://www.tandfonline.com/doi/pdf/10.1080/21870764.2019.1710017
Silicon Carbide is a wonderful material: hard, chemically inert, semiconducting and extreme temperature resistance. That also makes it very difficult to work with, require temperatures in excess of 2000 degrees celsius to sinter. This paper promises low-temperature sintering (600C) using a silicate glass fluxing agent to reduce the temperature of oxidative bonding.
In theory this makes sense, but upon experimentation I found it may not be entirely the whole story.
==== Timeline ====
0:00 Intro
2:13 Silicon Carbide properties
3:52 Ingredients and their purpose
6:35 Molding green parts
7:10 Notes on dehydrating
8:10 Alternative Binders
8:42 Furnace heating schedule
9:35 It works!
10:00 SEM Before/After images
11:27 Mechanical testing
12:50 We're done! Are we done?
14:22 Boiling tests
16:23 Hypothesis #1
17:01 Hypothesis #2
18:07 Hypothesis #3
20:00 Conclusion
21:06 Evil Villian
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