Dannon Rhudy on thu 18 jan 07
Below is the response from Tom Buck in Canada.
Clayart is really fortunate to have folks like him, who
not only know what's what, they know how to explain
it so laymen can understand easily.
Thanks, Tom. You are a jewel, as always. -d
Enamel is glass on a metal surface. so it has
> lots of Si-O tetrahedrons, and Al-O trihedrons. that is, there always will
> be O atoms locked into the surface of the glass, and these then attract
> Ca++ ions, and the Ca links up to O of the glass. and finally, Ca atoms
> attract other ions from the solution that is "tea" or ???? and you get a
> crud buildup.
> Stainless steel, the most common form, is an alloy of several
> metals, chiefly Iron, Nickel (18% by weight), and chromium (8%w), small
> amounts of others may be present. There are no O atoms to attract the Ca++
> ions. In fact 18-8 stainless steel is quite inert, nothing sticks to it,
> and nothing reacts with it except the halides (chiefly chloride, Cl-). a
> different ype of s.s. is used to hold the halides.
>
> be well peace Tom.
| |
|
