2017
DOI: 10.1016/j.jallcom.2017.06.039
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Effect of C/Mo duplex coating on the interface and tensile strength of SiCf/Ti-21Al-29Nb composites

Abstract: Abstract:SiC fiber-reinforced Ti-21Al-29Nb matrix composites with either C and C/Mo duplex coatings were prepared by the foil-fiber-foil (FFF) method, in order to comparatively study the effects of C/Mo duplex coatings on the interface and mechanical properties of the composites. The longitudinal tensile strength of the as-prepared composites was measured at room temperature. In order to study the interfacial thermal stability and microstructure evolution characteristics of the composites, vacuum thermal expos… Show more

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Cited by 21 publications
(2 citation statements)
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“…For chromized samples, studies have pointed out that there is a carbon-poor layer (hardness lower than the substrate) existing between the Cr coating and steel substrate [11,13,16,17]. Fortunately, it has been reported that these shortcomings can be avoided by duplex coating or composite coating treatments [18][19][20][21][22]. Yilbas et al [23] developed a dual-layer coating on carbon steel, which consisted of a top layer that provided wear resistance and a bottom layer that provided corrosion resistance.…”
Section: Introductionmentioning
confidence: 99%
“…For chromized samples, studies have pointed out that there is a carbon-poor layer (hardness lower than the substrate) existing between the Cr coating and steel substrate [11,13,16,17]. Fortunately, it has been reported that these shortcomings can be avoided by duplex coating or composite coating treatments [18][19][20][21][22]. Yilbas et al [23] developed a dual-layer coating on carbon steel, which consisted of a top layer that provided wear resistance and a bottom layer that provided corrosion resistance.…”
Section: Introductionmentioning
confidence: 99%
“…Luo et al further introduced C/Mo duplex coatings as barrier layers and prepared the SiC f /C/Mo/Ti 2 AlNb by the FFF method. They found that the Mo barrier layer can regulate the microstructure of the matrix by forming a B 2 -riched transition zone between the reaction layer (RL) and the matrix in the SiC f /Ti-21Al-29Nb composite, obtaining a higher tensile strength relative to the Ti 2 AlNb alloy [14]. In addition, Yang et al employed a matrix-coated fiber (MCF) method to fabricate SCS-6 SiC f /Ti 2 AlNb, and also explored the interfacial reactions between SCS-6 SiC fiber and Ti 2 AlNb, showing a milder interfacial reaction than that in SiC f /super α 2 -Ti (Ti-25Al-10Nb-3V-1Mo) [15].…”
Section: Introductionmentioning
confidence: 99%