利用燃煤发电厂的飞灰加入ZrO2和Crofer通过反应式空气制
Shu-Wei Chang1,2, Ren-Kae Shiue1, Liang-Wei Huang3
1Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan.
Materials (Basel, Switzerland)
|May 14, 2025
概括
将5%重量的飞灰添加到银糊填充剂中,可以提高使用反应式空气制 (RAB) 制的合金和克罗弗合金接头的密度. 较高的飞灰含量会损害关节的完整性.
科学领域:
- 材料科学 材料科学 材料科学
- 连接技术 连接技术
- 可持续材料 可持续材料
背景情况:
- 燃煤发电厂产生大量的飞,这是一个潜在的工业应用的副产品.
- 开发先进陶和合金的可持续连接方法对于能源和工业部门至关重要.
研究的目的:
- 调查使用飞灰作为制填充剂添加剂用于异质反应性空气制 (RAB) 的可行性.
- 评估飞灰添加对ZrO2和Crofer合金接头接口反应和气密性的影响.
主要方法:
- 采用ZrO2和Crofer合金的异质反应性空气制 (RAB),使用具有不同飞灰含量 (0%,5%,10%按重量) 的基于Ag的料填充剂.
- 接关节的微结构分析,包括界面反应层和相位分布.
- 在室温和高温 (600°C) 下对接接头进行气密性测试.
主要成果:
- 添加5%重量的飞促进了界面反应,从飞中形成富含Si/Al的氧化物,并氧化了Cu-Ti涂层和Crofer合金.
- 5%重量的飞灰接头具有出色的气密性,在室温下保持280小时的完整性,在600°C下保持24小时的完整性.
- 将飞灰含量增加到10%的重量,导致空洞,裂和易碎的Si/Al丰富氧化物,导致关节故障和气密性损失.
结论:
- 将5%重量%的飞灰纳入富含Ag的料填充剂对于ZrO2和Crofer合金的反应性气是可行的.
- 添加飞灰可以增强接口反应,并实现耐用气密关节,适用于苛刻的应用.
- 优化飞灰含量至关重要,因为较高的度会对关节微观结构和性能产生负面影响.
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