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The origin of Corrosion coatings



2003

My name is Helen, and I am an engineering student, I would like to know if anyone can tell me the history behind "Parkerizing" and "sherardizing", including who and when they were discovered.

Thanks.

Helen A [last name deleted for privacy by Editor]
- Ellesmere Port, Cheshire, England


Editor's Note:


2003

Hi, Helen. The correct spelling is "sherardizing", apparently after Sherard Cowper. The Parker Chemical Co. was, I believe, a subsidiary of Ford during WWII.

The March 2004 edition of Metal Finishing Magazine contains an article by Dr. Benu Chatterjee on sherardizing, page 40. There are a number of used and inexpensive books about Sherardizing at this link at Amazon. Good luck.

Here are some additional threads about Sherardizing on this web site:

4872. Hot-dip galvanising alternatives

7460. Sherardizing vs galvanising

8222. Zinc-plating vs mechanical or hot dip galvanized coatings

8591. Sherardizing help?

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
-----


2003

Helen,

I sure hope that your engineering thesis will mention the ORIGINAL 'coatings', i.e., Sheffield Plate ... which sure predates Sherardizing and Parkerizing by a century or so!

freeman newton portrait
Freeman Newton [dec]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).




2007

The Parker Chemical Company was formed in 1914 in Detroit, Michigan, and developed the phosphating process used for rust-proofing the early Ford autos. Parkerizing is only one of many metal-finishing technologies developed by the company. Parker was a division of Ford only during the period 1982-1987, after which it was purchased by the Henkel Corporation, which continues in this business world-wide to this very day.

Joseph Topping
- Frisco, Texas


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