John Britt on tue 24 feb 04
Ellie,
I use:
Nickel Blue on Amber
Frit 3110 -52.5g
Zinc Oxide -26.4g
Silica -19.5
Kaolin -1.6g
Nickel(Black) Oxide -2.2g
Hope it helps,
John Britt
Ellie Blair on tue 24 feb 04
Hi all,
I have been working on a glaze for crystalline with nickel. I have both =
black and green. I know the black is the oxide and green is the carb so =
black is going to be the purer form. I keep getting a green that I =
don't like. The crystals are very opaqe and range from a blue green to =
dark green. The background is a toned down lime green. I want the =
crystals to be turquoise and the ground to be amber. I have used the =
green nickel and have had mixed results. I am in the process of testing =
green nickel. I just completed a test of five different bases with the =
same amount of bl. nickel. Hated the results so am now doing the same =
thing with the same five bases and the same firing schedule with green =
nickel to compare the difference. Can anyone enlighten me more on green =
and black nickel and how to get the results I want. I need more info so =
I can test! test! test!
Thanks
Ellie Blair
Blair Pottery
Lawrence, Kansas 66047
Ilene Mahler on tue 24 feb 04
ellie Fa said a clay without tioxide..and none in the glaze.. turq according
yo Robbin Hopper is alcline in copper not acid.Best workshop this year a
weekend with Robbin Hopper...Ilene in Conn
----- Original Message -----
From: "Ellie Blair"
To:
Sent: Tuesday, February 24, 2004 11:54 AM
Subject: green vs. black nickel
Hi all,
I have been working on a glaze for crystalline with nickel. I have both
black and green. I know the black is the oxide and green is the carb so
black is going to be the purer form. I keep getting a green that I don't
like. The crystals are very opaqe and range from a blue green to dark
green. The background is a toned down lime green. I want the crystals to be
turquoise and the ground to be amber. I have used the green nickel and have
had mixed results. I am in the process of testing green nickel. I just
completed a test of five different bases with the same amount of bl. nickel.
Hated the results so am now doing the same thing with the same five bases
and the same firing schedule with green nickel to compare the difference.
Can anyone enlighten me more on green and black nickel and how to get the
results I want. I need more info so I can test! test! test!
Thanks
Ellie Blair
Blair Pottery
Lawrence, Kansas 66047
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Daniel Dermer on wed 25 feb 04
NICKEL BLUE
(from Ceramics Monthly, Nov. 1980)
Whiting 8.8
Zinc Ox 27.6
Kona F4 45.3
Ball Clay 4.9
Flint 13.4
100
Add:
Black Nickel Ox 1.2 (I subbed Nickel Carb at 1.5%)
Bentonite 2
This glaze is a glossy, amber-ish celadon, a bit runny
at a full cone 10, but developed lots of small, bright
blue crystals on an amber background for me -- very
pretty! Nice subtle color on c10 BMIX, and a
darker amber on stoneware clay, but same number of
blue crystals. Fire in neutral atmosphere, or very
light reduction, to prevent excessive bubbling,
presumably from the Zinc Oxide boiling off (when
reduced), which can leave sharp bubbles on the
finished surface of the piece.
It's not a glaze I use anymore, but it did end up on a
couple of test pieces I made when first learning to
fire my own kiln -- a combo gas/reduction deal. I
uploaded a couple pictures of this glaze to a Yahoo!
photo album, which you can see here:
http://photos.yahoo.com/dbdermer
The first picture is a white stoneware (BMIX) vase
with the above glaze on the lower 3/4 of the piece
(not too many crystals in view). The second picture
has a bunch of pots from my first ever
electric/reduction firing a few years back, and the
last stoneware mug on the right has the above glaze on
the outside, with blue crystals visible on an amber
background.
A slower cooling from 2000-1800 degrees would net you
more crystals on the surface...
Enjoy-
-Dan
http://pages.sbcglobal.net/ddermer
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