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Oxide Wash Question


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Have done several pieces in the past using black iron oxide wash to highlight textures and at ^6 ox. it comes out a nice iron brown color. My question is...does anyone know what the coloration affects with any of the other oxides made into a wash and then wiped off. Also, if you do these at an underglaze treatment transparant glaze over them, will they show through or mix with the transparent glaze and change it's color?

 

Thanks for your help. You all are great.

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I have used copper carbonate with a bit of flux as an accent oxide. I learned this from artists from the former Soviet Union when I worked with them in Latvia. Pieces fired during this symposium were shown at NCECA in the '90s in the Eastern European Ceramics show.

You apply it the same as iron oxide. I do recommend a bit of flux because fully concentrated copper can boil.

 

Macria.

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There are other things you can use...mason stains with fluxes such as a compatable fit. I used Bernard Slip with an underglaze base for low fire soda firing but used it as an accent wash. It came out buttery gold with dark accents.

I wouldn't use chrome or manganese just because of the skin contact hazards and the process involves washes of heavy metals going down the drain.

Slips like Albany slip substitutes may work as well. My favorite wash for oxidation was stated above, copper carbonate. It gives a black to green coloration.

 

Marcia

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  • 3 years later...

Nathalie,

 

Testing is really the way to go, application thickness is extremely sensitive with washes, I have recently used copper washes with gerstley at c6 but my tests won't help you much if you can't duplicate my application...

 

Images 3 and 4 in my gallery use the copper wash on porcelain, but I'm looking at other options as Bill Carty gave the go-ahead for handling Mn and all that stuff at NCECA this year....

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