Oxidation behavior of Mo–Si–B alloys in wet air

Mandal, P.; Thom, Andrew J.; Kramer, M. J.; Behrani, Vikas; Akinç, Müfit

doi:10.1016/j.msea.2003.12.025

Cited by 51 publications

(8 citation statements)

References 19 publications

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“…The reported results (123,124) show that two main factors contribute to the minimal effect of water vapor on the high-temperature oxidation response of Mo-Si-B coatings. Typically, the water vapor effect on Mo-Si-B alloys is noticeable during the transient stage of the oxidation process as a result of an increased recession rate and mass loss from the evaporating Mo-base hydroxide (in addition to MoO 3 gases).…”

Section: Water Vapor Exposurementioning

confidence: 81%

Surface Engineering of Mo-Base Alloys for Elevated-Temperature Environmental Resistance

Perepezko

2015

Annu. Rev. Mater. Res.

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The synthesis of robust coatings that provide protection against environmental attack at ultrahigh temperatures is a difficult challenge. To achieve this goal for Mo-base alloys, the fundamental concepts of reactive diffusion pathway analysis and kinetic biasing are used to design a multilayer Mo-Si-B-base coating with a phase sequencing that allows for structural and thermodynamic compatibility and an underlying diffusion barrier to maintain coating integrity. The coating design concepts have a general applicability. The coating structure evolution during high-temperature exposure facilitates a prolonged lifetime as well as self-healing capability. The borosilicide coatings that can be synthesized by a pack cementation process yield superior environmental resistance for Mo-base systems at temperatures up to at least 1,700 • C and can be adapted to apply to other refractory metal and ceramic systems. 9.1

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Section: Water Vapor Exposurementioning

confidence: 81%

Surface Engineering of Mo-Base Alloys for Elevated-Temperature Environmental Resistance

Perepezko

2015

Annu. Rev. Mater. Res.

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“…To overcome these shortcomings, relevant research work has not stopped since the end of the 20th century [20][21][22][23][24][25]. Fortunately, people finally succeeded in improving the properties of alloy through material designs [26][27][28][29], preparation techniques [30][31][32][33][34] or surface modification methods [35][36][37][38]. Among them, doping second phases such as W, Nb, ZrO 2 , La 2 O 3 , Al 2 O 3 , and Cr 2 O 3 in material designs to strengthen the performance of substrate is generally regarded as an important measure [39].…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Elements Enhanced the Oxidation Resistance of Mo-Si-Based Alloys for High Temperature Application: A Review

Wang

et al. 2021

Coatings

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Traditional refractory materials such as nickel-based superalloys have been gradually unable to meet the performance requirements of advanced materials. The Mo-Si-based alloy, as a new type of high temperature structural material, has entered the vision of researchers due to its charming high temperature performance characteristics. However, its easy oxidation and even “pesting oxidation” at medium temperatures limit its further applications. In order to solve this problem, researchers have conducted large numbers of experiments and made breakthrough achievements. Based on these research results, the effects of rare earth elements like La, Hf, Ce and Y on the microstructure and oxidation behavior of Mo-Si-based alloys were systematically reviewed in the current work. Meanwhile, this paper also provided an analysis about the strengthening mechanism of rare earth elements on the oxidation behavior for Mo-Si-based alloys after discussing the oxidation process. It is shown that adding rare earth elements, on the one hand, can optimize the microstructure of the alloy, thus promoting the rapid formation of protective SiO2 scale. On the other hand, it can act as a diffusion barrier by producing stable rare earth oxides or additional protective films, which significantly enhances the oxidation resistance of the alloy. Furthermore, the research focus about the oxidation protection of Mo-Si-based alloys in the future was prospected to expand the application field.

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“…Compared to monolithic intermetallic alloys, multi-component and multi-phase intermetallic composites could have a better combination of toughness and strength. Great effort has been made to further improve the comprehensive properties of intermetallic compounds and then promote their industrial applications [15,16,17,18]. …”

Section: Introductionmentioning

confidence: 99%

Microstructure Characterization and Wear-Resistant Properties Evaluation of an Intermetallic Composite in Ni–Mo–Si System

et al. 2017

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Intermetallic compounds have been studied for their potential application as structural wear materials or coatings on engineering steels. In the present work, a newly designed intermetallic composite in a Ni–Mo–Si system was fabricated by arc-melting process with commercially pure metal powders as starting materials. The chemical composition of this intermetallic composite is 45Ni–40Mo–15Si (at %), selected according to the ternary alloy diagram. The microstructure was characterized using optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS), and the wear-resistant properties at room temperature were evaluated under different wear test conditions. Microstructure characterization showed that the composite has a dense and uniform microstructure. XRD results showed that the intermetallic composite is constituted by a binary intermetallic compound NiMo and a ternary Mo2Ni3Si metal silicide phase. Wear test results indicated that the intermetallic composite has an excellent wear-resistance at room-temperature, which is attributed to the high hardness and strong atomic bonding of constituent phases NiMo and Mo2Ni3Si.

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Oxidation behavior of Mo–Si–B alloys in wet air

Cited by 51 publications

References 19 publications

Surface Engineering of Mo-Base Alloys for Elevated-Temperature Environmental Resistance

Surface Engineering of Mo-Base Alloys for Elevated-Temperature Environmental Resistance

Rare Earth Elements Enhanced the Oxidation Resistance of Mo-Si-Based Alloys for High Temperature Application: A Review

Microstructure Characterization and Wear-Resistant Properties Evaluation of an Intermetallic Composite in Ni–Mo–Si System

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