Note of Properties of Aqueous Suspensions of TiC and TiN

Abstract

Vol. 58 reached where an endothermic reaction occurs corresponding to a change from the orthorhombic to the hexagonal form. The final break at 800°i s due to the melting of potassium metaphosphate.Weight loss experiments for equimolar samples heated at 210. and at 350°are presented in Fig. 2 and demonstrate that the reaction occurring slowly at the lower temperature and more rapidly at the higher one can be represented by the equation KHS04 + K2HP04 -s-K2S04 + KPO, + H20 Chemical and X-ray diffraction analyses were performed on products obtained upon cooling melts produced by heating equimolar mixtures. The X-ray diffraction patterns were found to correspond with those consisting of intimately ground equimolar mixtures of potassium metaphosphate and potassium sulfate and composite patterns of each of the pure components. The insoluble potassium metaphosphate was determined by leaching thoroughly with water and weighing the insoluble residues. The soluble metaphosphate in the filtrate also was determined. Typical samples were found to contain 36.2 and 36.1% insoluble KP03, 5.09% soluble KP03 giving a total of 41.3% metaphosphate (required by theory, 40.4%).It is again apparent that no sulfatophosphate is formed when potassium hydrogen sulfate and dipotassium hydrogen phosphate are heated even up to the fusion point, but that instead an initial acidbase reaction occurs resulting in the formation of potassium sulfate and potassium dihydrogen phosphate, both of which subsequently undergo those thermal changes which characterize each of them as pure components.

Experimental assessment of thermophysical properties of (Pu,Zr)N

“…Between 700 and 2300 K the values obtained in the present work were located in the range 15-20 W m À1 K À1 and seemed to remain constant within the experimental error. The thermal conductivity data of zirconium nitride that can be found in literature [7,9,10], referenced in the Touloukian book [11] and also plotted in Fig. 3, were sparse and no reproductive, the most reliable being probably those from Hedge et al [7], recently recommended by Kleykamp [12].…”

Slip Casting and Thermoelectric Property of CrSi<SUB>2</SUB>

“…It is a more useful method to manufacture products with complex shapes than the hot pressing or the cold pressing method. This technique has been recently applied to shaping of the sintered metals (12)- (14), an nitride (15), carbide (16) and oxide (17) (18) products, etc. The fundamental investigations on the slip casting of MoSi2 as a heating material (19) and CrSi2 and CoSi as thermoelectric materials (20) have been carried out.…”