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The phase equilibrium diagram for the ternary fused‐salt system NaF–BeF2–UF4 was based on evidence from differential thermal analysis, polarized light microscopy, and X‐ray examination of samples obtained from thermal‐gradient quenching studies and from high‐temperature filtration experiments. All the stable compounds in the binary systems NaF–BeF2 and NaF–UF4 displayed primary‐phase fields in the ternary system, including a new subsolidus compound which was observed and tentatively assigned the formula NaF · 4UF4. No ternary compounds or solid solutions were observed. The following three eutectics were found in the ternary system: (1) 72.5 NaF, 17.0 BeF2, and 0.5 mole % UF4 at 486°C, (2) 56.0 NaF, 43.5 BeF2, and 10.5 mole % UF4 at 339°C, and (3) 43.5 NaF, 56.0 BeF2, and 0.5 mole % UF4 at 345°C.
Tbe Morad Labontoty Fiocress Bep<»t, tssoed moaWy. la iBteadetf to be a meww of itvotUBC ttrars of cnnest teeiadcal iBlet«Bt is naaatcit •id ctevticmatart pfoctans^ T& isaae tfais t«poit as aooo as iKwafbIa aftor tte Old e^ tte BOTO, ^l(»tal woik is Itaidted: aad afm» Ws ia Ml iBfiKBMl j^ocreas tqwit. ttie teaolts iffid data foeso^ed are ptdfad-Baqr and aalitfect to clH^^e. lliese lepoits are aot Itf«ided to a^stttite pnMteatfos fa aar sense of tbe WDi dL Final reaalta eiUiet will be nrtaritted fbt paUtotticm te legBlar pnrfesaional jonnmls or wUI be pabil^ed is tte foea ol MM toideal repmta. Tbe prerioas reports is tbis serlea »e: llLM-il46 MLM-1148 MLM-ltSl MLIi-1152 MLM-ltSS MONSANTO RESEARCH CORPORATION
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