Joining of C f/SiC ceramics to Nimonic alloys

C. Jiménez; K. Mergia; N. V. Moutis; X. A. Azpiroz; Ch Wilhelmi; Th Speliotis; S. Messoloras

doi:10.1007/s11665-012-0183-6

Joining of C _f/SiC ceramics to Nimonic alloys

C. Jiménez, K. Mergia, N. V. Moutis, X. A. Azpiroz, Ch Wilhelmi, Th Speliotis, S. Messoloras

Materials for extreme conditions

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

C _f/SiC ceramic composites have been brazed to Nimonic alloys using TiCuAg filler metal. In order to improve wettability and to provide compatibility between ceramic and metal, the C _f/SiC surface was metallized through the deposition of a chromium layer. Subsequent heat treatments were carried out to develop intermediate layers of chromium carbides. Excellent wetting of both the composite ceramic and the metal from the filler metal is observed in the fabricated joints. Shear tests show that failure occurs always within the ceramic material and not at the joint. In the filler region depletion of Ti and formation of Ag and Cu rich regions are observed. At the C _f/SiC-filler interface a layered structure of the filler metallic elements is observed. Titanium interacts with the SiC matrix to form carbides and silicides.

Original language	English
Pages (from-to)	683-689
Number of pages	7
Journal	Journal of Materials Engineering and Performance
Volume	21
Issue number	5
DOIs	https://doi.org/10.1007/s11665-012-0183-6
Publication status	Published - May 2012

Keywords

Aerospace
Brazing
Ceramic matrix composites
Joining
Mechanical testing
Superalloys

Access to Document

10.1007/s11665-012-0183-6

Cite this

@article{dd594a00c43a495094895f4b1afb8d61,

title = "Joining of C f/SiC ceramics to Nimonic alloys",

abstract = "C f/SiC ceramic composites have been brazed to Nimonic alloys using TiCuAg filler metal. In order to improve wettability and to provide compatibility between ceramic and metal, the C f/SiC surface was metallized through the deposition of a chromium layer. Subsequent heat treatments were carried out to develop intermediate layers of chromium carbides. Excellent wetting of both the composite ceramic and the metal from the filler metal is observed in the fabricated joints. Shear tests show that failure occurs always within the ceramic material and not at the joint. In the filler region depletion of Ti and formation of Ag and Cu rich regions are observed. At the C f/SiC-filler interface a layered structure of the filler metallic elements is observed. Titanium interacts with the SiC matrix to form carbides and silicides.",

keywords = "Aerospace, Brazing, Ceramic matrix composites, Joining, Mechanical testing, Superalloys",

author = "C. Jim{\'e}nez and K. Mergia and Moutis, {N. V.} and Azpiroz, {X. A.} and Ch Wilhelmi and Th Speliotis and S. Messoloras",

year = "2012",

month = may,

doi = "10.1007/s11665-012-0183-6",

language = "English",

volume = "21",

pages = "683--689",

journal = "Journal of Materials Engineering and Performance",

issn = "1059-9495",

publisher = "Springer New York",

number = "5",

}

TY - JOUR

T1 - Joining of C f/SiC ceramics to Nimonic alloys

AU - Jiménez, C.

AU - Mergia, K.

AU - Moutis, N. V.

AU - Azpiroz, X. A.

AU - Wilhelmi, Ch

AU - Speliotis, Th

AU - Messoloras, S.

PY - 2012/5

Y1 - 2012/5

N2 - C f/SiC ceramic composites have been brazed to Nimonic alloys using TiCuAg filler metal. In order to improve wettability and to provide compatibility between ceramic and metal, the C f/SiC surface was metallized through the deposition of a chromium layer. Subsequent heat treatments were carried out to develop intermediate layers of chromium carbides. Excellent wetting of both the composite ceramic and the metal from the filler metal is observed in the fabricated joints. Shear tests show that failure occurs always within the ceramic material and not at the joint. In the filler region depletion of Ti and formation of Ag and Cu rich regions are observed. At the C f/SiC-filler interface a layered structure of the filler metallic elements is observed. Titanium interacts with the SiC matrix to form carbides and silicides.

AB - C f/SiC ceramic composites have been brazed to Nimonic alloys using TiCuAg filler metal. In order to improve wettability and to provide compatibility between ceramic and metal, the C f/SiC surface was metallized through the deposition of a chromium layer. Subsequent heat treatments were carried out to develop intermediate layers of chromium carbides. Excellent wetting of both the composite ceramic and the metal from the filler metal is observed in the fabricated joints. Shear tests show that failure occurs always within the ceramic material and not at the joint. In the filler region depletion of Ti and formation of Ag and Cu rich regions are observed. At the C f/SiC-filler interface a layered structure of the filler metallic elements is observed. Titanium interacts with the SiC matrix to form carbides and silicides.

KW - Aerospace

KW - Brazing

KW - Ceramic matrix composites

KW - Joining

KW - Mechanical testing

KW - Superalloys

UR - http://www.scopus.com/inward/record.url?scp=84862162825&partnerID=8YFLogxK

U2 - 10.1007/s11665-012-0183-6

DO - 10.1007/s11665-012-0183-6

M3 - Article

AN - SCOPUS:84862162825

SN - 1059-9495

VL - 21

SP - 683

EP - 689

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 5

ER -

Joining of C _f/SiC ceramics to Nimonic alloys

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this