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Subject:
Re: Alpha Preq
From:
Terry Zhu <[log in to unmask]>
Date:
Mon, 23 Dec 1996 20:12:18 -0600 (CST)
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On Mon, 23 Dec 1996 [log in to unmask] wrote:

> What is the chemistry of this material?

NaCLO + NaOH
 
> Doe anyone know what the advantages / disadvantages are over the black
> oxide process?

Advantage: Cheap/ Disadvantage: Long needle tend to be attacked in acid
enviroment (Cupper plating...) to have so called pink ring.
 
> Suppose the costs of conveyorization are eliminted?  What are the safety
> / cost advantages?
> 
> Are there other materials out there?
Black Cuprous oxide
Brown Cupric oxide
Double treated (Zn)
White Oxide (Tin)
 
> I thought conveyorized oxide went out in the 70s because of surface
> markings?  How does Alpha Preq hold up?
> 
> [log in to unmask]
> 
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