Scholarlink

Abstract <p>This study presents, for the first time, the mechanisms governing the formation of the ternary Ti<sub>0.5</sub>V<sub>2</sub>Cr<sub>0.5</sub> base alloy and its composite alloys (incorporating 4 wt % ZrNi and 4 wt % Zr<sub>7</sub>Ni<sub>10</sub> activating additives), synthesized via hydride cycle (HC) method. Additionally, the interaction of these alloys with hydrogen was systematically investigated. The synthesis was conducted through two distinct technological routes, each resulting in different formation mechanisms of the final composite materials. XRD analysis confirmed that all synthesized alloys form solid solutions with BCC crystal structure, exhibiting nearly identical lattice parameters. The hydrogen interaction of the synthesized alloys was examined under self-propagating high-temperature synthesis (SHS) and short-term activation method (STAM, 15–30 min). In both cases, the hydrides of FCC structure with hydrogen storage capacities ranging from 2.46 to 3.06 wt % were formed. The desorption temperatures of the synthesized hydrides differ due to the different microstructures of the alloys. Hydrides synthesized via STAM using composites obtained through the first synthesis route exhibited a hydrogen capacity of 3.01 wt % and a lower decomposition temperature characterized by a single endothermic peak at 280°C on the differential thermal analysis (DTA) curve. These findings demonstrate the potential of using Ti<sub>0.5</sub>V<sub>2</sub>Cr<sub>0.5</sub>-based alloys for hydrogen storage applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Hydride Cycle Synthesis of Ti0.5V2Cr0.5 Alloy and Its Composites with ZrNi/Zr7Ni10 Additives by a Novel Technological Approach

  • 期刊论文

  • 发表日期：

    2025年8月27日

查看全文
  • A. Aleksanyan,
  • N. Sisakyan,
  • D. Mayilyan

摘要

Abstract

This study presents, for the first time, the mechanisms governing the formation of the ternary Ti0.5V2Cr0.5 base alloy and its composite alloys (incorporating 4 wt % ZrNi and 4 wt % Zr7Ni10 activating additives), synthesized via hydride cycle (HC) method. Additionally, the interaction of these alloys with hydrogen was systematically investigated. The synthesis was conducted through two distinct technological routes, each resulting in different formation mechanisms of the final composite materials. XRD analysis confirmed that all synthesized alloys form solid solutions with BCC crystal structure, exhibiting nearly identical lattice parameters. The hydrogen interaction of the synthesized alloys was examined under self-propagating high-temperature synthesis (SHS) and short-term activation method (STAM, 15–30 min). In both cases, the hydrides of FCC structure with hydrogen storage capacities ranging from 2.46 to 3.06 wt % were formed. The desorption temperatures of the synthesized hydrides differ due to the different microstructures of the alloys. Hydrides synthesized via STAM using composites obtained through the first synthesis route exhibited a hydrogen capacity of 3.01 wt % and a lower decomposition temperature characterized by a single endothermic peak at 280°C on the differential thermal analysis (DTA) curve. These findings demonstrate the potential of using Ti0.5V2Cr0.5-based alloys for hydrogen storage applications.