[TR] Bonderize?

[terryrs at comcast.net (terryrs at comcast.net)]

Camshaft came back from the machine shop.  But the lobes weren't polished.  
They have this black stuff all over them and it looks fairly gritty.  The book 
I'm using says "if the camshaft has been reground, degrease thoroughly, 
bonderize, and soak in graphite."

What the heck is bonderize?  And shouldn't the machine shop have polizhed the 
lobes?  ...Or is it polished, but just being protected by something I have to 
take off somehow?

No telling, not knowing!

Terry Smith, '59 TR3A
New Hampshire