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Ildfasthet

Ildfast murstein på veggene i en smelteovn for flytende jern(over 1538 °C).

Et ildfast materiale er et varmebestandig materiale, det vil si et mineral som er motstandsdyktig mot nedbrytning av varme, trykk, eller kjemiske angrep, og brukes som regel for å beskrive et stoff som beholder styrke og form når det utsettes for høye temperaturer.[1].

ASTM C71 definerer ildfaste materialer som ikke-metalliske materialer som har kjemiske og fysiske egenskaper som tåler å utsettes for over 538 celsius.[2]

Ildfaste materialer brukes i ovner, forbrenningsovner og reaktorer.

Ildfaste materialer brukes også for å lage også brukt til å lage stekeformer, former til glasstøping og metaller, og for overflatebehandling av systemer for rakettoppskyting.[3]

Referanser

[rediger | rediger kilde]
  1. ^ Ailsa Allaby and Michael Allaby. Concise Dictionary of Earth Sciences. Oxford Paperbacks Oxford University Press. 
  2. ^ ASTM Volume 15.01 Refractories; Activated Carbon, Advanced Ceramics
  3. ^ Refractory Materials for Flame Deflector Protection System Corrosion Control: Similar Industries and/or Launch Facilities Survey - January 2009 - NASA
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Ildfasthet
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