【摘要】 <正> 对于 Pr-Fe 二元系,Ray 等早期研究确定有六方晶系 PrFe₇（a=8.582,c=12.461）存在.文献指出:在常压下只存在 Pr₂Fe₇,而在一定压力下还有 PrFe₂.文献表明有Pr₂Fe₁₇和 PrFe₂,分别在1100和670℃由包晶反应生成,共晶反应（80-85at.-%Pr）温度为660℃,但对 PrFe₂的存在尚未肯定,而且未测出液相线.我们的实验,采用纯度99.95%Pr 和99.99%Fe,共配制各重3g的38个合金试样,在氩气保更多还原

【Abstract】 A recommended phase diagram of the binary Pr-Fe system is presented from X-ray diffraction and μDTA data.In this system,the intermetallic compounds Pr₂Fe₁₇ and PrFe₂ exist and decompose at peritectic reaction temperature 1310 and 1100℃ respectively.It undergoes eutectic reaction at 90.0 at.-% Pr at about 610℃,Neither Pr in Fe nor Fe in Pr indicates any detectable solid solubility,更多还原