Using your phone's internet browser
go to:  qna.rediff.com
Click and drag this link to
the Home icon in your browser.
Q.

How to Blacken Steel to Prevent Rust

Tags: steel, home decor, rust
Asked by Tiaa, 19 Mar '13 01:49 pm
  Invite a friend  |  
  Save  |  
 Earn 10 points for answering
Answer this question  Earn 10 points for answering    
4000 characters remaining  
  
    
Keep me signed inNew User? Sign up

Answers (2)

 
1.

Steel is blackened with heat, chemicals or a combination of both. Steel has two oxides: red and black. Red oxide is what we know as rust. It is corrosive and destructive. Black oxide provides a protective, abrasion-resistant coating that prevents rust formation. Depending on the method used, black oxide can be applied in an even finish. According to chemical engineer Fred Perlstein of the Frankford Arsenal, "The black oxide and manganese phosphate coatings (tested) were approximately equal in abrasion resistance and superior in this regard to the other black coatings tested."
Answered by Ataur Rahman, 19 Mar '13 01:50 pm

 
  
Report abuse
Useful
 (1)
Not Useful
 (0)
Your vote on this answer has already been received
2.

Steel is blackened with heat, chemicals or a combination of both. Steel has two oxides: red and black. Red oxide is what we know as rust. It is corrosive and destructive. Black oxide provides a protective, abrasion-resistant coating that prevents rust formation. Depending on the method used, black oxide can be applied in an even finish. According to chemical engineer Fred Perlstein of the Frankford Arsenal, "The black oxide and manganese phosphate coatings (tested) were approximately equal in abrasion resistance and superior in this regard to the other black coatings tested."
Answered by Quest, 19 Mar '13 08:30 pm

 
  
Report abuse
Useful
 (1)
Not Useful
 (0)
Your vote on this answer has already been received

Ask a Question

Get answers from the community

600 characters remaining