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Effects of hydrogen annealing, sulfur segregation and diffusion on the cyclic oxidation resistance of superalloys: A review

机译：氢气退火，硫偏析和扩散对高温合金抗循环氧化性能的影响：综述

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This review is based on the phenomenon of improved oxide scale adhesion for desulfurized superalloys. The proposed adhesion mechanism involves sulfur interfacial segregation and scale-metal bond weakening. Sulfur surface segregation on superalloys is examined as a function of temperature and sulfur content and related to classical behavior predicted by the McLean isotherm. Effective desulfurization to less than 1 ppmw can be accomplished by hydrogen annealing and is governed by sulfur diffusion kinetics in nickel. Hydrogen annealing results in excellent cyclic oxidation resistance for a number of advanced superalloys. The concept of a critical sulfur content is discussed in terms of practical annealing conditions and section thicknesses.

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Smialek, J. L.; Jayne, D. T.; Schaeffer, J. C.; Murphy, W. H.;
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年度 1994
页码 1-32
总页数 32
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
ANNEALING; DESULFURIZING; GENERAL OVERVIEWS; HEAT RESISTANT ALLOYS; HYDROGEN; NICKEL ALLOYS; OXIDATION RESISTANCE; ADHESION; DIFFUSION; OXIDES;

机译：退火;脱硫;一般概述;耐热合金;氢;镍合金;抗氧化性;附着力;扩散;氧化物;

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机译：氢退火，硫偏析和扩散对高温合金抗循环氧化性能的影响

Effects of hydrogen annealing, sulfur segregation and diffusion on the cyclic oxidation resistance of superalloys: A review

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