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A Comparative Study of Current and Conversion Efficiency of the METALAST Anodizing Processes With and Without the METALAST Additive
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A Comparative Study of Current and Conversion Efficiency of the METALAST Anodizing Processes With and Without the METALAST Additive
 
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A Comparative Study of Current and Conversion Efficiency of the METALAST Anodizing Processes With and Without the METALAST Additive
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From METALAST International, Inc.
 

 
The anodic current efficiency and conversion efficiency of the anodizing process in a traditional electrolyte was determined by weight loss measurements and atomic absorption spectrophotometric analysis of the stripping solutions containing the dissolved anodic coating products. Accordingly, the percentage of aluminum oxide and aluminum sulfate in the resulting anodic coatings was estimated as well. It was found that all the results from the traditional electrolyte are consistent with the previous results from the METALAST bath. On one hand, this suggests that the results are very reproducible and the experimental method is very reliable. The high conversion efficiency and high current efficiency of the METALAST process were further confirmed in this investigation. On the other hand, however, it appears that the current METALAST additive does not isignificantly affect the anodic current efficiency and conversion efficiency. The high conversion efficiency and the high current efficiency of the METALAST technology may chiefly result from the benefits of the proprietary recipes, computerized control, and optimized electrolyte composition.
Product Announcements
METALAST International, Inc. - METALAST AA-200 (Aluminum Anodizing Additive)
METALAST AA-200 is a proprietary aluminum anodizing, specialty chemical additive. AA-200 is a combination of organic monomers specially formulated to provide a better quality and more versatile oxide. (read more)
METALAST International, Inc. - AluminumProChem Cleaners
A full range of alkaline and acid cleaners effective against buffing compounds, oils, greases and other soils. METALAST also offers a completely non-etching cleaner specifically designed for bright... (read more)
METALAST is pleased to offer a Product Compliance, Quality Assurance Program to those companies that have specified METALAST products. (read more)
DiFruscia Industries, Inc. - Anodizing
Anodizing entails the immersion of an aluminum part in an electrolyte where an electric current is passed through the part. The surface is converted to aluminum oxide - one of the hardest substances... (read more)
METALAST International, Inc. - QPL & RoHS Compliant, Hexavalent Free Replacement
METALAST TCP-HF is a trivalent chromate, RoHS compliant chemical conversion coating. METALAST TCP-HF meets mil-c-5541 spec and the hexavalent chromium EU ELV directive. METALAST TCP-HF is QPL approved... (read more)
Harrison Electropolishing, L.P. - Electropolishing
Electropolishing is an electrochemical process by which surface material is removed by anodic dissolution. Sometimes referred to as "reverse plating", electropolishing actually removes surface... (read more)
METALAST International, Inc. - METALAST TCP-HF Anodize Seal
METALAST TCP-HF Anodize Seal is an environmentally friendly, less expensive and superior performing alternative to existing anodize seals including chromic acid, nickel acetate, nickel flouride and... (read more)
METALAST International, Inc. - METALAST BDP- Fire Retardant, Fume Suppressant
METALAST BDP is the most effective class of environmentally friendly fire retardant and fume suppressant chemicals. METALAST BDP contains no VOC's, deca-BDE, PBDE's or brominated-based chemicals, and... (read more)
Quality Machining, Inc. - Services
Quality Machining's services include production runs, prototyping, and custom projects. (read more)
 
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Topics of Interest
As an effort to understand the details of the METALAST anodizing process in terms of its advantages over the traditional anodizing process and the mechanisms of anodizing under the constant current... (Read More)
A high coating formation efficiency (or coating formation rate) is one of the benefits provided by the METALAST anodizing process. Effective coating formation can benefit the anodizer in the form of... (Read More)
In previous report, the comparative studies of anodic coatings formed in the METALAST and traditional electrolytes under Type II condition (at 70 °F, 24 ASF)were made. The influence of the METALAST... (Read More)
Typical wrought aluminum alloys were anodized in the METALAST solution under Type II and Type III conditions at pulsed current and no-pulsed current respectively to determine the effect of the pulsed... (Read More)
The coating formation efficiency of the METALAST anodizing processes for a variety of aluminum alloys is summarized in both tabular and graphic forms in this report. It is obvious that the METALAST... (Read More)
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