kkp
Junior Member
Posts: 55 
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Post by kkp on Jun 7, 2018 17:35:31 GMT -8
Matrikote 90AC Ceramic Coating
I've been reading the forging forums for quite a while now. They are getting excellent results from using metrikote painted on kastolite. Their forges heat up faster and get hotter when metrikote is used. Kind of defeats my goal of reducing thermal cycling on the top of my bell but I have several ideas on that front
I'm going to get a pint and line my riser with it. It will add a bit of mass but I think the reflective qualities will out weigh any mass concerns.
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Post by smartliketruck on Jun 8, 2018 14:20:34 GMT -8
Thanks for bringing this lower cost material up, I was looking into what ITC 100 might be. The SDS for the ITC product IIRC only listed as a ceramic powder. My best guess was titanium dioxide as the active reflector since it's used in paint and window films for IR reflectivity (also a whitener/brightener) Matrikote 90AC Ceramic Coating
I've been reading the forging forums for quite a while now. They are getting excellent results from using metrikote painted on kastolite. Their forges heat up faster and get hotter when metrikote is used. Kind of defeats my goal of reducing thermal cycling on the top of my bell but I have several ideas on that front
I'm going to get a pint and line my riser with it. It will add a bit of mass but I think the reflective qualities will out weigh any mass concerns.
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Post by smartliketruck on Jun 8, 2018 14:56:48 GMT -8
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kkp
Junior Member
Posts: 55
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Post by kkp on Jun 9, 2018 17:11:52 GMT -8
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Post by gadget on Jun 14, 2018 7:42:12 GMT -8
The only real contender for a good IR coating seams to be ITC's product. Personally, I don't think it is needed in a wood stove if you are using ceramic wool blanket or board. Fire brick could maybe us it though.
I know it is also used in kilns to save on energy and refractory life, not just in forges. I have also heard that it does flake off and has to be reapplied. Personally, I would invest in ceramic fiber insulation vs coating with ITC-100. We don't see as high a temp as forges and the ceramic fiber will last a long time.
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Post by gadget on Jun 15, 2018 13:42:16 GMT -8
I agree, MSDS says high alumina refractory. Alumina has good thermal conductivity vs other refractories so Matrikote 90ac is more for protection then insulation. "Phosphoric acid", so is it a geopolymer? I have heard it is great stuff and forge guys love it and also satanite. Mullite is insulating FYI but dang tough stuff. Its what spark plugs are made of and they have a very rough life. Mullite grog is out there. I save spark plug ceramic from work and it is tough to grind up. I would bet ITC-100 has either lots of mullite or cubic zirconia in it. I found one potential ITC-100 recipe a few years back but never tried it. It contained high amounts of stabilized zirconia. en.wikipedia.org/wiki/Thermal_barrier_coatingen.wikipedia.org/wiki/Yttria-stabilized_zirconiaWhy not experiment and make your own? Its pretty dang interesting playing with refractories. I have found that my own sub soil is a great fireclay. Grogs are cheap enough. Wood stove environments are not near as harsh as forges -gadget |
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Post by gadget on Jun 18, 2018 10:21:33 GMT -8
Looks like Matrikote does have an IR coating - matrikote IR. Also another brand I found last night Plistix 900F, suppose to be an IR coating. Both much cheaper then ITC-100. Good old fashion kiln wash may be another option that does help reflect heat but not maybe as good as IR specific products
-Gadget
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