Titnium anpdizing

[alexmin]

My local Hardware store has only TSP substitute. Will it work for anodizing as well as original TSP? I remember reading that someone was using the substitute.

 

[howiesatwork]

Cascade...

 

[TekSec]

There's a tutorial somewhere on the net using soda (Coke I believe) but here are some other things that I've accumulated. No experience with them, mind you....

TITANIUM

Acid Anodizing
Contrary to popular belief, acid anodizing of titanium which thickens the oxide film confers only a minimum improvement to wear resistance. The anodic film also serves to reduce the inward diffusion of oxygen at elevated temperature and of hydrogen under conditions of galvanic charging. Many electrolytes are effective; 80% phosphoric acid + 10% sulphuric acid + 10% water produces a sound coherent film with potential raised from 0 to 110v over ten minutes. Galling can be significantly reduced by acid anodizing for example on threaded components, by conjunction with compressive surface treatment and with a dry film lubricant. Ti-6Al-4V bolts used on the successful Heidrun riser had an epoxy polyamide molydisulphide coating applied over a peened and anodized surface.

Alkaline Anodizing
Thicker oxide films able to withstand relatively higher loadings are produced by alkaline anodizing processes such as TiodizeR. Long established alkaline base proprietary finishes such as CanadizingR control the oxide film thickness and density so that one or more of a series of dry film lubricants may be applied and ‘locked-in’ to the surface. Canadized coatings were used successfully to prevent galling at the joints and in the drive shaft of the titanium core sample drill tubes used in NASA’s exploration of the moon.

Color versus Anodized Film Thickness
Progressive thickening of the oxide film by anodizing results in color changes due to refraction of light. This effect has been used selectively for component identification, but more imaginatively for coloring titanium sheet to produce ‘paintings’, and ornamental jewelry. Various electrolytes are suitable, but 3 - 5% trisodium phosphate in distilled water is commonly used. Colors produced vary according to the electrolyte and the applied voltage."

 

[STR]

I only use a substitute called ironically, "TsP" which stands for "Totally Superior Product" and is 100% phosphate free.

Its worked fine for years.

STR

 

[butcher_block]

i use the TSP sub and my etcher on DC to do all my Ti no problem

 

[Fellhoelter]

Cascade...

Yeah, what Howie said......