陶瓷颗粒对新型ti750基合金腐蚀性能的影响

Vitus Mwinteribo Tabie, J. Quaisie, Jianwei Li, Philip Yamba, Xiaojing Xu
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引用次数: 0

摘要

本文研究了以SiCp、B4C、SiCw和GPLs颗粒为增强剂制备的基体Ti750合金及其复合材料的腐蚀行为。采用火花等离子烧结方法对金属粉末进行固结。研究选择25% NaCl + 75% Na2SO4的混合熔盐作为腐蚀介质,研究800℃固溶时效下的热腐蚀行为。研究发现,在相同的腐蚀温度下,所有材料的增重曲线的变化率相似。基材的腐蚀增重最大(14.10 mg.cm-2);% SiCp增强复合材料增重最低,为5.1 mg。Cm-2,占基体合金的36.17%。所有材料的腐蚀产物主要由TiO2、Al2O3、Na2TiO3和Al2TiO5组成。加入SiCp后,SiO2的峰值增强,腐蚀层没有明显的剥落,而基材有部分脱落、深裂纹和孔洞。5卷。因此,% SiCp增强复合材料具有最佳的腐蚀性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
THE INFLUENCE OF CERAMIC PARTICLES ON THE CORROSION PROPERTIES OF NOVEL TI750 MATRIX ALLOY
This paper explores the corrosion behavior of matrix Ti750 alloy and its composites prepared using SiCp, B4C, SiCw, and GPLs particles as reinforcement. The consolidation of the metallic powders was by spark plasma sintering method. The study chose mixed molten salt of 25% NaCl + 75% Na2SO4 as the corrosive medium and the hot corrosion behavior of the solid-solution aging at 800 °C. The study found that at the same corrosion temperature, the rate of change of the weight gain curves of all the materials was similar. The corrosion weight gain of the base material was the highest (14.10 mg.cm-2), whiles the 5vol.% SiCp reinforced composite had the lowest weight gain of 5.1 mg.cm-2, which is 36.17% of the base alloy. The corrosion products of all the materials were mainly composed of TiO2, Al2O3, Na2TiO3, and Al2TiO5. The peak of SiO2 was enhanced when SiCp was added, and there was no distinct peeling off of the corrosion layers, unlike the base material, which had partial shedding, deep cracks, and holes. The 5vol.% SiCp reinforced composite therefore possessed the best corrosion performance.
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