[mulmen]

Glass is already basically welded, or maybe it's more like brazing. But an oxyacetylene torch can be used to work with glass just as well as to cut or weld metal.

Metals also have weird properties. Like tempering and hardening based on temperature. In an industrial setting you need expert welders with deep knowledge of the materials or a weld is going to fail and ruin your day.

So it doesn't seem like a huge leap to me actually, assuming ceramics or glass actually have desirable properties.

[kennend3]

I noticed you focused almost exclusively on the welding while ignoring the brittle nature of glass?

I would think that putting liquid salt in a a glass pipe is somewhat asking for trouble. One of the many issues with glass is "thermal shock".

Let's say there is a fire and water based sprinklers are activated.. what will the 1,400F glass do once water touches it?

Or there is an accident and someone bangs into the glass. Metal can deform and not fail, glass cant.

[mulmen]

“Glass” is a generic term for a wide variety of materials. So is “metal”. Metal can be brittle, sometimes that’s even desirable. That’s what tempering and hardening are about.

A molten salt reactor is a material science problem. Conventional “metal” doesn’t work because of the corrosion. If glass has some desirable property then we can overcome the “bumping in to it” problem. Maybe with a hand rail. Or staying away from the operational nuclear reactor.

I’m not suggesting glass actually be used. I’m saying if it was I wouldn’t be surprised.

[werdnapk]

Doesn't glass.... melt?

[mulmen]

So does metal. Welding is just melting two parts together.

[baq]

https://en.wikipedia.org/wiki/Cold_welding

[mulmen]

https://en.m.wikipedia.org/wiki/Welding

What point are you trying to make here?

[baq]

no heat, no melting. just welding

[HPsquared]

Perhaps it would have been better to say "melting two parts together is just welding".

[imtringued]

We can do this with glass, however, lapping is incredibly expensive for something as simple as joining two pieces of glass together.

[onlyrealcuzzo]

At 3100 F.

Salt melts at 1474 F.

[eitland]

1704C

801C

(or

1978K

1074K)