Research status of the use properties of zirconium hydride

Zirconium hydride is generally prepared by placing the metal zirconium in a high temperature hydrogen gas for a period of time. The phase diagram of zirconium hydride is shown in Fig. 1. When the H/Zr ratio is between 1.54 and 1.66, the zirconium hydride is the δ phase of the fcc structure; when the H/Zr ratio is between 1.67 and 1.69, the zirconium hydride is coexisting with the fcc structure. The δ-ε phase; when the H/Zr ratio is between 1.70 and 1.95, the zirconium hydride is the ε phase of the fct structure. In the application and research of zirconium hydride, the experimental data accumulated by H/Zr ratio of δ-zirconium hydride and H/Zr ratio of ε-zirconium hydride near 1.8 is the most, and the United States and Japan tend to use H. The /Zr ratio is δ-zirconium hydride near 1.6, while Russia tends to use ε-zirconium hydride with an H/Zr ratio greater than 1.8. The wiring installation of 10kV power line engineering is divided into three parts: ordinary wiring installation, horizontal cable installation and bow cable installation. First of all, when the ordinary wiring is installed, it is necessary to select the appropriate cable rod orientation and the specific orientation of the cable pull pit and the position of the re-measurement cable. When pulling the cable tray and digging the pit, pay attention to the cable tray and the pull rod, and the cable pull pit. The connection part, also pay attention to fill. In the prefabricated cable drawing, it is necessary to calculate how long the steel strands need to be. Use the ruler to measure well and then make the mark. The main wire and the tail wire should be bundled. The hoop and the wire hoop should be connected. When the hoop is installed, it should be based on The situation is measured by making a mark and installed in a suitable place. At this time, pay attention to the wire rod and the clamp to be placed in the right place to ensure the correct installation method. For the installation of the UT type wire, first remove the wire tightener, adjust the wire clamp, and then tighten the wire clamp and the wire rod and the steel strand. For the installation of the horizontal cable, in the preparation of all, in accordance with the ordinary wiring installation method, pull down the cable and dig the pit. When prefabricating the cable, pay attention to the measurement of the falling line and the actual horizontal line. It is necessary to add 0.8m to this foundation. In addition, it must also prefabricate the falling line and the horizontal line, and also lay the steel bra, and the hoop should be properly installed. In the place where the staff should pull the wire horizontally on the pull rod, it is necessary to pay attention to the safety protection. The staff pulls the horizontal pull wire and the clamp is installed. For the bow type cable installation, its installation method is similar to the ordinary cable installation process.

Research status of the use properties of zirconium hydride