How Can Inconel Be Soldered to Ceramic?

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    Ceramics Soldering
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Discussion Overview

The discussion revolves around the challenges of soldering Inconel, specifically Inconel 600, to ceramic materials, including titanium oxide, lead oxide, and zirconium oxide. Participants explore various soldering techniques, materials, and environmental conditions relevant to this process.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant is conducting research on soldering Inconel to ceramic and seeks advice on filler materials, flux, heating rates, and cleaning methods.
  • Another participant suggests that brazing may be more appropriate than soldering for joining Inconel to ceramic, emphasizing the need for compatibility between the flux or brazing compound and the materials involved.
  • Participants discuss the specific compositions of Inconel 600 and the ceramic, noting that the nickel-chromium content can vary and may affect the soldering process.
  • There is a suggestion to apply the solder to the Inconel first before adding the ceramic to facilitate diffusion, although the effectiveness of the current method is questioned.
  • Concerns are raised about potential contamination from using copper wire to bind the parts, with a recommendation to consider alternative materials like titanium for binding.
  • One participant shares a link to a Spanish paper discussing joining superalloys and ceramics, which may provide relevant insights.
  • Another participant claims to have developed a soldering material that can join all metals and ceramics, expressing interest in the application of joining Inconel to ceramics.
  • There is skepticism about the feasibility of a universal soldering material for high-temperature and corrosive environments, emphasizing the need for specialized brazing or soldering materials.
  • A participant mentions a patented solder alloy designed for joining dissimilar materials, seeking further information about the application of Inconel to ceramics.

Areas of Agreement / Disagreement

Participants express differing opinions on the best approach to soldering Inconel to ceramic, with no consensus reached on the effectiveness of the methods discussed or the suitability of materials proposed.

Contextual Notes

Participants note the importance of understanding the specific compositions of the materials involved and the potential impact of environmental conditions on the soldering process. There is also mention of the need for compatibility between the soldering materials and the substrates.

prickerbush
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i am doing some research for my university involving soldering an Inconel to a ceramic. i am new to soldering in general, and I am new to this lab. the inconel is nickle-chromium (dont know the composition) and i think the ceramic is Ti-oxide/Zn-oxide/Zirconium-oxide or something. basically, I am having trouble getting them to bond. right now I am using a 51.5-48.5 indium-tin solder. and I am using a brazing furnace to run tests.

i am just wondering if anyone has any experience in this field and if they could give me a little help for my research like what filler material to use, what flux, heating rates, cleaning of the samples, anything. i can't find too many papers covering this topic.

thank you!
 
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I'm familiar with brazing Inconels to other Inconels and stainless steel, but not ceramic.

If one is searching use braze or brazing Inconel to ceramic rather than soldering.

One should really know the type of Inconel since Ni-Cr contents can vary widely, and one should know the ceramic composition as well. The flux or brazing compound must be chemically compatible with the Inconel and ceramic (metal oxide) substrates.
 
inconel is Inconel 600 (72-14-8 Ni-Cr-Fe or something close to that) and the ceramic is titanium oxide, lead oxide, and zirconium oxide, if that helps. currently we using an argon environment for the brazing.

we have been putting a small piece of the In-Sn solder between the inconel and ceramic, wrapping it in copper wire, then putting it in the tube furnace. do you think think this method is effective? should we apply the solder to the inconel first, then put on the ceramic, then put it in the furnace to facilitate diffusion? my professor is leaving it up to me to find a solution, but i really don't have any experience with soldering.

thank you very much!
 
prickerbush said:
inconel is Inconel 600 (72-14-8 Ni-Cr-Fe or something close to that) and the ceramic is titanium oxide, lead oxide, and zirconium oxide, if that helps. currently we using an argon environment for the brazing.

we have been putting a small piece of the In-Sn solder between the inconel and ceramic, wrapping it in copper wire, then putting it in the tube furnace. do you think think this method is effective? should we apply the solder to the inconel first, then put on the ceramic, then put it in the furnace to facilitate diffusion? my professor is leaving it up to me to find a solution, but i really don't have any experience with soldering.

thank you very much!


If you're allowing the copper wire to touch the indium solder, the
copper may contaminate the solder. It might be better to find
another wire to use for binding the parts (perhaps Ti?).

A very good info source for Indium solder use is www.indium.com, and
this page: http://www.indium.com/techlibrary/applicationnotes.php
may be helpful.

Even better: http://www.indium.com/products/solderkits/bondingtononmetallic.php
 
Last edited by a moderator:
I have a new soldering material for joining ALL METALS and CERAMICS! Please contact me, as I am interested to find out why you need to join ICONEL to ceramics. What is the service temperature of this component?
 
Yangloh, Can you explain a little?
I don't think that one material can use for joining all metalls to ceramic unles your joing are "cold". I explain, I can "joint" two materials with plasticine or a resin or something like that, but this joining can not use in the conditions where you will use the superalloy (high temp, corrosion,...)
In the environment conditions where I'll use a superalloy I'll need a brazing material or a solding material that it have a very good properties.
 
We have just patented a solder alloy that can join dissimilar materials such as aluminum to titanium copper brass steel. And rubies quartz metallic oxides n glass. I was searching for information n stumbled on ur posts. As prickbush on his work on iconel to ceramics. And wondered what application it is for? Indium tin solder that he is using is also v low temperatures! Our solder is at 200 deg n it is lead free n flux free. We are targeting several general repairs industries n the robust microelectronics industries + rf n opto- sectors because of it's ability to solder aluminum n metallize glass. If u could send me ur email, I could seek ur advice. Because you seem like an expert in certain fields. Thank you yang
 

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