Sylvia Shirley on thu 27 apr 00
Hello,
Has anybody out there used niobium (Nb) oxide as a glaze
material? Any thoughts on uses, hazards, availability, or
recipes?
Sylvia Shirley
Fredrick Paget on fri 28 apr 00
Sylvia,
Some years ago I tried niobium in a kiln . I put some scrap niobium in a
small crucible hoping to oxidize it and instead it vaporized and permeated
the bricks close by. For about a half dozen firings after that my glazes
close to that part of the kiln were wrinkled and funny looking. It finally
burned out. I would say it is bad news.
Niobium is used in high pressure sodium lamps for the input leads to the
arc tube. It is expensive and hard to buy if you are not a player in the
industrial game.
Fred Paget
>----------------------------Original message----------------------------
>Hello,
>
>Has anybody out there used niobium (Nb) oxide as a glaze
>material? Any thoughts on uses, hazards, availability, or
>recipes?
>
>Sylvia Shirley
>From Fred Paget, Marin County, California, USA
Paul Lewing on fri 28 apr 00
Sylvia Shirley wrote:
>
> ----------------------------Original message----------------------------
> Hello,
>
> Has anybody out there used niobium (Nb) oxide as a glaze
> material? Any thoughts on uses, hazards, availability, or
> recipes?
Sylvia,
My friend Jon Singer, who is probably not back on the list yet after a
cross-country trip, has used niobium in his research into flourescent
glazes. He's got a number of different colors worked out, which all
look white under normal light, but flouresce different colors under
ultraviolet or "black light". I forget which color the niobium makes,
but it doesn't do much in normal light. But as a way to blow a lot of
money on an addition to a white glaze, it works great!
Paul Lewing, Seattle
Paul Lewing on sat 29 apr 00
Paul Lewing wrote:
>
> ----------------------------Original message----------------------------
> Sylvia Shirley wrote:
> >
> > ----------------------------Original message----------------------------
> > Hello,
> >
> > Has anybody out there used niobium (Nb) oxide as a glaze
> > material? Any thoughts on uses, hazards, availability, or
> > recipes?
>
> Sylvia,
> My friend Jon Singer, who is probably not back on the list yet after a
> cross-country trip, has used niobium in his research into flourescent
> glazes. He's got a number of different colors worked out, which all
> look white under normal light, but flouresce different colors under
> ultraviolet or "black light". I forget which color the niobium makes,
> but it doesn't do much in normal light. But as a way to blow a lot of
> money on an addition to a white glaze, it works great!
> Paul Lewing, Seattle
Well, Jon happened to call me today on his way back to Maryland, and I
mentioned this post to him. Turns out I was wrong again! Second time
this year and it's only late April! Niobium was not one of his
flourescent colorants. Tungsten, yes, copper, yes, manganese, yes, but
not niobium. Sorry, Sylvia.
Paul Lewing, in Seattle (I think)
| |
|
