Add time:08/02/2019         Source:sciencedirect.com

A phase diagram is proposed for the yttrium-antimony system based on thermal, microscopic, chemical and X-ray analyses. An inverted peritectic reaction develops as a result of antimony additions, lowering the 1475° C transformation temperature of yttrium to 1462° C. Eutectic reactions occur at 14.5 at. % antimony and 1220° C, and greater than 99.0 at.% antimony and 629° C. There are four compounds in the system. The compound YSb melts congruently at 2310° C while Y3Sb and Y5Sb3 result from peritectic reactions at 1240° and 1690° C. The fourth compound, Y4Sb3, forms peritectically at 2120° C, but decomposes by a eutectoid reaction at 1660° C.

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