Y2O3、SnO2和ZrO2作为抑制ni基高温合金高温腐蚀的缓蚀剂的对比研究

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials at High Temperatures Pub Date : 2023-01-02 DOI:10.1080/09603409.2023.2171546

Gitanjaly Goyal, N. Bala, H. Singh, S. Prakash

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引用次数: 0

摘要

金属和合金的高温腐蚀可以通过使用抑制剂和燃料添加剂来控制。在镍基高温合金Superni 718表面制备了Y2O3、SnO2和ZrO2三种不同类型的涂层。在900°C的熔盐环境(Na2SO4-60%V2O5)中进行了50个循环的加速腐蚀测试。每个循环包括在碳化硅管炉中加热1小时，然后在环境空气中冷却20分钟。每个周期后的重量变化测量由精度为0.01毫克的电子天平进行。对暴露试样进行XRD、SEM和EPMA分析，表征氧化层。与所有涂层的合金相比，裸露的高温合金显示出更多的总体重量增加。结果表明，ZrO2对降低A合金的腐蚀速率最为有效。

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Comparative study of Y2O3, SnO2 and ZrO2 as inhibitor to control high temperature corrosion of Ni-based superalloy

ABSTRACT High temperature corrosion of metals and alloys can be controlled by the use of inhibitors and fuel additives. In this work three different types of coatings namely Y2O3, SnO2 and ZrO2 coatings were superficially applied on Ni base superalloy Superni 718. Accelerated corrosion testing of the uncoated as well as the coated superalloy was done in a molten salt environment (Na2SO4-60%V2O5) at 900°C for 50 cycles. Each cycle consisted of 1 hour heating in a Silicon Carbide Tube furnace followed by 20 minutes cooling in ambient air. Weight change measurements after each cycle were taken by an electronic balance having an accuracy of 0.01 mg. XRD, SEM and EPMA analyses of the exposed specimens were carried out to characterise the oxide scales. The bare superalloy showed more overall weight gain, in comparison with all the coated counterparts. It was concluded that ZrO2 was most effective in reducing corrosion rate in alloy A.

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来源期刊

Materials at High Temperatures 工程技术-材料科学：综合

CiteScore

1.90

自引率

15.40%

发文量

审稿时长

>12 weeks

期刊介绍： Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered. Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself. Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.