No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Acid vs alkali zinc plating - which is more prone to hydrogen embtrittlement

2007

I am in charge of plating shop I'm my company which manufactures high tensile fasteners.
So far no one has clearly answered my doubt, which process introduces more Hydrogen during plating - acisd zinc or alkali zinc.
With available technical literature I am of the view that in acisd it is lesser than alkali because of the fact that in acis zinc plating the cathode efficiency is 95 % as compared to alkali which is 75 %/.

SRIDHAR BALASUBRAMANIAN
PLATING SHOP EMPLOYEE - MADURAI, TAMILNADU, INDIA

Dear Mr Shridhar,

You are dead right in your assumption. Chloride based baths do not embrittle as badly as Alkaline baths.

don't forget that your pickling step is common for both types of baths, and will also induce embrittlement!

Khozem Vahaanwala
Saify Ind

Bengaluru, Karnataka, India

2007

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: