Grade 2 titanium plating
Grade 2 titanium plating
(OP)
Has anyone had any luck with plating grade 2 titanium with pure silver (without nickel or any other materials)? I'm looking to improve my brazing process by pre-plating the surfaces with silver, but I'm not sure if it's possible or if the silver will actually be bound to the underlying material. Any thoughts?





RE: Grade 2 titanium plating
I would not think of silver as helping at all with Ti.
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P.E. Metallurgy, Plymouth Tube
RE: Grade 2 titanium plating
RE: Grade 2 titanium plating
I thought that this was done with Ti-Zr-Cu-Ni, or Ti-Zr-Cu, or Ti-Cu-Ni fillers.
I have heard of using Ag-Cu with very aggressive fluxes.
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P.E. Metallurgy, Plymouth Tube
RE: Grade 2 titanium plating
RE: Grade 2 titanium plating
This does not sound like a very robust process.
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P.E. Metallurgy, Plymouth Tube
RE: Grade 2 titanium plating
The AWS Brazing Handbook has a lot of important information regarding process and alloys for brazing titanium/Ti-Alloys. It also points to several important AWS specs for various aspects of the processing.
You should become very familiar with the AWS BH CHAPTER 30—REACTIVE METALS: TITANIUM, ZIRCONIUM, AND BERYLLIUM. Titanium is 'reactive alloy' that is difficult to braze without strict controls for various factors.
Titanium can be successfully brazed with silver, copper, aluminum, Ti-Ni and Ti-Zr-Be alloys. What is worrisome is diffusion of hydrogen and oxygen into the titanium matrix during the processing, so very careful atmosphere/moisture controls and overall cleanliness are mandatory.
NOTE. Titanium and silver can be a bad combination, since silver can embrittle titanium if diffused into the alloy matrix.... such as by plating and subsequent heating to brazing temperatures.
Regards, Wil Taylor
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RE: Grade 2 titanium plating
RE: Grade 2 titanium plating
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P.E. Metallurgy, Plymouth Tube
RE: Grade 2 titanium plating
RE: Grade 2 titanium plating
RE: Grade 2 titanium plating