of Carburize
Source: Webster's dictionaryDuring the smelting process to obtain Wootz steel ingots, woody biomass and leaves are known to have been used as carburizing additives along with certain specific types of iron rich in microalloying elements. Source: Internet
Low-temperature carburizing is another option that virtually eliminates galling and allows the use of similar materials without the risk of corrosion and the need for lubrication. Source: Internet
Saint Anselm College New methods of producing it by carburizing bars of iron in the cementation process were devised in the 17th century. Source: Internet