surface carburizing
21Molten salt — Molten FLiBe (2LiF BeF2) Molten salt refers to a salt that is in the liquid phase that is normally a solid at standard temperature and pressure (STP). A salt which is normally liquid at STP is usually called a room temperature ionic liquid,… …
22caseharden — /kays hahr dn/, v.t. 1. Metall. to make the outside surface of (an alloy having an iron base) hard by carburizing and heat treatment, leaving the interior tough and ductile. 2. to harden in spirit so as to render insensible or insensitive to… …
23Oxidizing and reducing flames — Bunsen burner: leftmost: reducing flame, rightmost: oxidizing flame …
24caseharden — case•hard•en [[t]ˈkeɪsˌhɑr dn[/t]] v. t. 1) mel to harden the surface of (an iron based alloy) by carburizing and heat treatment, leaving the interior tough and ductile 2) to make callous • Etymology: 1670–80 …
25caseharden — /kays hahr dn/, v.t. 1. Metall. to make the outside surface of (an alloy having an iron base) hard by carburizing and heat treatment, leaving the interior tough and ductile. 2. to harden in spirit so as to render insensible or insensitive to… …
