A new type of commercial reactor is first built up in China.This paper briefly describesits performances,working foundamentals and various possible uses.The reactor uses urani-um-zirconium hydride as fuel element and ...A new type of commercial reactor is first built up in China.This paper briefly describesits performances,working foundamentals and various possible uses.The reactor uses urani-um-zirconium hydride as fuel element and has a large prompt negative temperature coefficientof reactivity,featuring inherent safety and a fairly high pulsed-power capacity.展开更多
The compatibility of the austenitic AISI 304 steel with Pb-Bi-Sn alloy was analyzed. The AISI 304 steels were immersed in stagnant molten Pb-33.3Bi-33. 3Sn alloy at 400, 500 and 600℃ for different exposure times （10...The compatibility of the austenitic AISI 304 steel with Pb-Bi-Sn alloy was analyzed. The AISI 304 steels were immersed in stagnant molten Pb-33.3Bi-33. 3Sn alloy at 400, 500 and 600℃ for different exposure times （100-2 000 h） respectively. XRay diffraction spectrum （XRD） with a Y-4Q system （CuKα,λ= 0. 154 78 nm） was used to identify the phases on the surface of specimens after exposing to Pb-Bi-Sn liquid metal （LM）. The surface and cross section of the specimens were analyzed by means of scanning electron microscopy （SEM） and energy dispersive X-ray analysis （EDX）. The result showed that a FeSn alloy layer on the surface of all specimens was formed, and it prevented AISI 304 steel matrix from penetration attack and loss of alloy elements at 400 and 500 ℃.展开更多
基金the Commission of Science,Technology and Industry for National Defence
文摘A new type of commercial reactor is first built up in China.This paper briefly describesits performances,working foundamentals and various possible uses.The reactor uses urani-um-zirconium hydride as fuel element and has a large prompt negative temperature coefficientof reactivity,featuring inherent safety and a fairly high pulsed-power capacity.
基金Item Sponsored by Foundation of National Key Laboratory of Science and Technology on Nuclear Fuel and Materials of China(2009C7001)
文摘The compatibility of the austenitic AISI 304 steel with Pb-Bi-Sn alloy was analyzed. The AISI 304 steels were immersed in stagnant molten Pb-33.3Bi-33. 3Sn alloy at 400, 500 and 600℃ for different exposure times （100-2 000 h） respectively. XRay diffraction spectrum （XRD） with a Y-4Q system （CuKα,λ= 0. 154 78 nm） was used to identify the phases on the surface of specimens after exposing to Pb-Bi-Sn liquid metal （LM）. The surface and cross section of the specimens were analyzed by means of scanning electron microscopy （SEM） and energy dispersive X-ray analysis （EDX）. The result showed that a FeSn alloy layer on the surface of all specimens was formed, and it prevented AISI 304 steel matrix from penetration attack and loss of alloy elements at 400 and 500 ℃.
