Experimental determination of the first and second critical heat flux densities and quench process characterization

The presence of "shock-film" boiling is seldom detected in most cooling curve quenchant characterization experiments and is often considered to be unimportant. In this paper, the experimental determination and calculation of the first critical heat flux density of shock-film boiling is described. The use of the first critical heat flux density to characterize the cooling behavior of various types of quenchant media and CVD surface coated metals is also described.