Kohlenstoffgehalte und Gefugeerscheinungen hochgekohlter Eisen-Kohlenstoff-Legierungen,Stahl und Eisen, Vol.31 (1911), pp.333-336.
(Carbon content and micro-structures in high carbon alloys.)
Notes:
The availability of small electric (arc) furnaces made it possible to increase melting temperatures up to 2500 C.
now it was possible to determine the carbon solubility of iron melts at higher temperatures. A problem, however, was the fact that during melting graphite was formed in an uncontrolled way (kish graphite), making it almost impossible to determine the actual carbon solubility.
Hanemann used special chill molds to obtain completely white structures of high carbon content. These determinations were used to construct his diagram. Note the extreme high temperature (1950 C) of his carbide liquidus at6.7% Carbon (Fe3C composition).
