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Aqueous silicon nit...
Aqueous silicon nitride suspensions: Effect of surface treatment on the rheological and electrokinetic properties
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- Laarz, E (författare)
- RISE,YKI – Ytkemiska institutet
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Lenninger, G (författare)
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- Bergström, L (författare)
- RISE,YKI – Ytkemiska institutet
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(creator_code:org_t)
- 1997
- 1997
- Engelska.
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Ingår i: Key Engineering Materials. - 1013-9826 .- 1662-9795. ; 132-136, s. 285-288
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- The effect of surface treatment on the colloidal stability and rheological properties of concentrated aqueous silicon nitride suspensions has been studied. Oxidized, leached and as-received, non-treated powders were studied using electroacoustic and rheological methods. At pH=10, the silicon nitride powder is well dispersed irrespective of surface treatment. However, the viscosity was affected by the surface treatment; oxidation caused a slightly higher and leaching a significantly lower viscosity. Several possible causes of the leaching effect on viscosity was discussed, e.g. leaching causing a smooth particle surface or facilitating break-up of strong, liquid immobilizing agglomerates. Additionally, the effect of added dispersants – anionic small molecules and polyelectrolytes – were also briefly mentioned.
Nyckelord
- Silicon nitride
- slurry processing
- aqueous dispersion
- rheology
- electroacoustics
- dispersing agent
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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