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Ferrante ppt2

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Use of soluble salts as surface treatments for ceramics.

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Ferrante ppt2

  1. 1. • Texas A&M – Corpus Christi • Louis Katz (he is in Thailand) • please vote for me for SDAL Use of Soluble Salts as Surface Treatments James (Alex) Ferrante
  2. 2. Needed vocabulary: – Soluble in water: breaks down in water to form a homogenous liquid , like salt or sugar – The solubility in water: The amount of material that can be held in solution – Saturated solution: A solution that has the maximum amount dissolved in it.
  3. 3. • Use of Soluble Salts as surface treatments • CaCl2 Calcium Chloride • MgSO4 Epsom Salts • Al2(SO4)3 Aluminum Sulphate • FeSO4 Iron Sulphate a.k.a. Copperas, Ferrous Sulphate
  4. 4. Sources •CaCl2 Calcium Chloride – Ice Melt (cheap), Damp Rid $$ •MgSO4 Epsom Salts -Pharmacy •Al2(SO4)3 Aluminum Sulphate- Nursery •FeSO4 Iron Sulphate- Nursery
  5. 5. • Unusual Cone 10 Clay Bodies Sources “Bizen Stoneware” – 1 Redart, 1 EPK, 1 C&C Ball Clay “Newman Bizen” – 1 Newman, 1 EPK, 1 C&C Ball Clay Wadding – 50 Kaolin, 50 White Sand
  6. 6. Straight Kentucky Stone – Is going to have a high drying shrinkage Straight Green Stripe – Worried about Cristobalite Straight Newman Red Substitute – To much thermal expansion for normal cone 10 glazes, it cracks.
  7. 7. Simple punky white bodies 1. EPK 2, Silica Sand 1 2. EPK 9, Custer Spar 1
  8. 8. Simple Class Stoneware • 2 Fireclay • 1 ball clay • 10% Feldspar
  9. 9. Teaism Archie Bray Brick Clay + fireclay Suwanee Natewong, carving Note Scumming
  10. 10. Teaism Yellow/Green from Calcium scum
  11. 11. Yellow/Green from Calcium scum
  12. 12. Less scum on the edge of Class Stoneware
  13. 13. Calcium Chloride Scum Newman Clay straight Cone 6 Oxidation
  14. 14. Teaism • Contact
  15. 15. Iron Sulphate
  16. 16. 12 FeSO4 + 3 O2 → 4 Fe2(SO4)3 + 2 Fe2O3
  17. 17. Calcium Chloride can be used strong Epsom salts cannot be used strong Iron Sulphate Oxidizes over time. It should not be stirred. Aluminum Sulphate is just scummy unless used on well melted bodies.
  18. 18. Safety 1 No eating these things. Keep them out of your eyes. Safety Glasses. Iron Sulphate is a poison. Iron is the largest single poisoning agent of children in the world. They make Acid vapors when fired. Vent your kiln.
  19. 19. • Safety 2 • Do not mix these compounds with acids, Boric Acid..... • Consult your safety expert, and MSDS sheets. I am not a safety expert. • They are all corrosive.
  20. 20. • Contacts: email..... • Handout and this powerpoint: http://louiskatz.net/salts Louis.Katz@tamucc.edu • Jamesalexanderferrante.com Txferrante@gmail.com

Use of soluble salts as surface treatments for ceramics.

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