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The use of titan and rutile


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#1 Natas Setiabudhi

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Posted 11 February 2012 - 11:41 AM

Hi everybody
I just wonder what are the differences between titan oxide and rutile iin clay body and glazes? The effect, the amount, the character, etc. I really appreciate for replying.:rolleyes:

Natas Setiabudhi

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#2 neilestrick

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Posted 11 February 2012 - 11:57 AM

Generally, Titatium Dioxide would be used as an opacifier, but doesn't work as well as Tin or Zircon-based opacifiers. Rutile is typically used as a colorant, for buttery yellow colors in oxidation, and sometimes grey in reduction. The greatest benefit of both is that they tend to grow crystals in glazes, which is a good way to create matteness, or just add interest to an otherwise boring glaze.

Neil Estrick
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#3 Natas Setiabudhi

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Posted 12 February 2012 - 10:56 PM

Generally, Titatium Dioxide would be used as an opacifier, but doesn't work as well as Tin or Zircon-based opacifiers. Rutile is typically used as a colorant, for buttery yellow colors in oxidation, and sometimes grey in reduction. The greatest benefit of both is that they tend to grow crystals in glazes, which is a good way to create matteness, or just add interest to an otherwise boring glaze.


Thank for replying. How about the amount for both in glaze mixture? Because when I used rutile 15%, the glazed became pinhole and little bit harsh. Was it rutile effect? :rolleyes:

Natas Setiabudhi

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#4 Mark C.

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Posted 13 February 2012 - 01:29 AM

Rutile glazes in reduction fire (thats my area of experience) can be problematic with pin holing
I have used a rutile base glaze for many decades by the ton and have seen my share of pinholes-Firing schedules-reduction amounts-glazing procedure-dusty dirty bisque ware can all be factors .
I like tin and zircon to opacify over Titanium Dioxide as noted above
Mark
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#5 Natas Setiabudhi

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Posted 14 February 2012 - 06:25 AM

Rutile glazes in reduction fire (thats my area of experience) can be problematic with pin holing
I have used a rutile base glaze for many decades by the ton and have seen my share of pinholes-Firing schedules-reduction amounts-glazing procedure-dusty dirty bisque ware can all be factors .
I like tin and zircon to opacify over Titanium Dioxide as noted above
Mark

Okay thanks

Natas Setiabudhi

www.natassetiabudhi.com


#6 Marcia Selsor

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Posted 14 February 2012 - 07:38 AM

Rutile is a natural , but impure source of Titanium Dioxide. Rutile contains a bit of iron which adds to its coloring quality.
Marcia

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#7 neilestrick

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Posted 14 February 2012 - 11:58 AM

You should really never need more than about 7% rutile in a glaze. It is one of the most refractory ingredients we use, so it can stiffen glazes, which can result in pinholing.

Neil Estrick
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Owner, Neil Estrick Gallery, LLC
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#8 Natas Setiabudhi

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Posted 15 February 2012 - 11:14 AM

Okay guys I really appreciate for the input.

Natas Setiabudhi

www.natassetiabudhi.com





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