Experimental studies on joinability of zircaloy and SiC/SiC composite with titanium powder
Experimental studies on joinability of zircaloy and SiC/SiC composite with titanium powder
复制标题
钛粉锆合金及SiC/SiC复合材料连接性能实验研究
DOI：
10.1002/ces2.10010
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Kishimoto Hirotatsu
中科院分区：
文献类型：
--
作者：
Serizawa Hisashi;Nakazato Naofumi;Sato Yuji;Tsukamoto Masahiro;Park Joon‐Soo;Kishimoto Hirotatsu
碳化硅纤维增强碳化硅基复合材料（SiC/SiC复合材料）具有许多优点，有望成为现有锆合金燃料包壳的潜在替代品，其中SiC/SiC复合材料包壳端盖密封的开发是关键问题。本研究在烧结法的基础上，采用光纤激光辐照法对SiC/SiC复合管端盖进行锆合金管密封，将钛微粉填充在SiC/SiC复合管外表面制造的狭缝中。通过对锆合金管外表面进行周向激光照射，成功地制备了机械焊接接头。此外，锆与钛之间形成了全比例固溶体，从而在一定程度上产生了锆与SiC/SiC复合材料之间良好的附着力。狭缝形状影响试验表明，狭缝宽度应小于激光辐照线宽度，窄钩形狭缝是激光辐照过程中钛粉的最佳夹持方式。
As for the enhanced accident tolerant fuel cladding for the advanced light‐water reactor, silicon carbide fiber reinforced silicon carbide matrix composite (SiC/SiC composite) is expected as a potential replacement of the current Zircaloy fuel cladding due to its many superiorities, where it is a key issue to develop the endcap seal of SiC/SiC composite cladding. In this research, based on the calking method, the fiber laser irradiation method was employed for sealing the endcap of SiC/SiC composite tube by Zircaloy tube, where the titanium micro‐powder was packed in the slit manufactured on the outer surface of SiC/SiC composite tube. By applying the laser beam irradiation to the outer surface of Zircaloy tube circumferentially, the mechanical calking joint was successfully fabricated. In addition, it is revealed that the good adhesion between Zircaloy and SiC/SiC composite was partially produced as the result of the generation of all proportional solid solution between titanium and zirconium. Moreover, the examinations about the slit shape influences indicate that the narrow hook slit seems to be the best type of silt for holding the titanium powder during the laser irradiation, where the width of slit should be narrower than that of laser irradiation line.