Recent Progress in the Joining of Titanium Alloys to Ceramics

Abstract

The prospect of joining titanium alloys to advanced ceramics and producing components with extraordinary and unique properties can expand the range of potential applications. This is extremely attractive in components for the automotive and aerospace industries where combining high temperature resistance, wear resistance and thermal stability with low density materials, good flowability and high oxidation resistance is likely. Therefore, a combination of distinct properties and characteristics that would not be possible through conventional production routes is expected. Due to the differences between the coefficients of thermal expansion (CTE) and Young's modulus of metals and ceramics, the most appropriate methods for such dissimilar bonding are brazing, diffusion bonding, and transient liquid phase (TLP) bonding. For the joining of titanium alloys to ceramics, brazing appears to be the most promising and cost-effective process although diffusion bonding and TLP bonding have clear advantages in the production of reliable joints. However, several challenges must be overcome to successfully produce these dissimilar joints. In this context, the purpose of this review is to point out the same challenges and the most recent advances that have been investigated to produce reliable titanium alloys and ceramic joints. for next-generation aircraft turbine engines [1][2][3][4]. Though, the development of bonding techniques especially to successfully produce dissimilar joints is the key to overcoming the poor room-temperature ductility and fracture toughness of these alloys that limit these potential applications.The possibility of combining the extraordinary properties of these titanium alloys with other materials such as nickel-based superalloys, steel, or even ceramics through dissimilar bonding can allow the development of components not only with complex geometries but also with a combination of properties exceeding the limitations of these materials when used individually.Advanced ceramics have attractive properties, such as high wear resistance, high thermal stability as well as high thermal and electrical conductivities. It is known that some of the advanced ceramics like alumina, silicon nitride, and zirconia, are also well established in the electronics, aerospace, nuclear, and automotive industries [19,20]. However, their inherent brittleness, high cost, and high hardness limit the production of large and complex shape components. The successful application of these advanced ceramics depends strongly on the joining of these materials with metals. In addition, the possibility to combine properties as high wear resistance and high thermal stability with low density, high temperature properties, and excellent creep and corrosion resistance could enable the production of more advanced components that better meet the high requirements of several industrial sectors [21].The most suitable methods for bonding metals and ceramics and producing successful joints with appreciated properties are brazing , diffusion bonding...

A review on current additive manufacturing technologies and materials used for fabrication of metal-ceramic fixed dental prosthesis

“…Nonetheless, bonders are recommended for titanium due to its low CTE value, creating substantial CTE value mismatch with commonly used base metal alloys [71]. Titanium alloys are a potential exception for this recommendation; however, they are rarely used and are still under development [72]. There are two types of failure for bonders: the cohesive and the adhesive failure mode.…”

Diffusion Bonding and Brazing of Advanced Materials

“…The successful production of dissimilar joints, such as advanced ceramics with lightweight alloys, titanium, or aluminum alloys, is quite attractive, combining the extraordinary properties of the two materials and extending their potential applications, particularly into components for the automotive and aerospace industries. The review paper of this special issue [1] provides an excellent description of the recent progress in the production of these dissimilar joints by diffusion bonding and brazing processes. However, on the basis of this review, it is clear that more research work is needed in order to promote process improvements in order to make them feasible in these industrial sectors.…”

Structure Investigation of Titanium Metallization Coating Deposited onto AlN Ceramics Substrate by Means of Friction Surfacing Process

“…In most cases of bonding ceramics with metals, during the joining process, the ceramics remain in the solid state [13][14][15][16][17], and the metal joined to it is very often in a liquid state. The metallization coating described in this article has been made using the friction method, which allows the creation of a joint between the ceramic substrate and the metallization coating, where during the joining process, both materials remain in a solid state.…”