We dispersed the fused silica but there was no shrinkage when slip casting.
You may possibly obtain shrinkage by adding some convenient type of modified starch to the slip, possibly fine milled 'tapioca' (a ball mill can be used to obtain the fine flour). This approach was found successful for a similar application, although dealing with common container glass (i.e. cullet).
Cf. Fernanda Guerreiro and Carlos Araújo Queiroz, "Glass art by slip casting and sintering recycled container glass", Livro de Resumos ─ IV CLECV ─ IV Congresso Luso-Espanhol de Cerâmica e Vidro / IV Portuguese-Spanish Congress on Ceramics and Glasses, Aveiro-Portugal, 16-18 November 2011, p. 129: abstract available at: http://www.academia.edu/attachments/28660709/download_file
What do you want to make Mr Nasir? Call me [email protected]
I think i can help you
Probably, the slip was fully deflocculated and so the 'no shrinkage' phenomenon occurred. Inducing a bit of flocculation in the slip either by adding a small quantity of aluminium nitrate solution to it or by changing its pH may effect a small shrinkage to the cast body.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials Chemistry