Metallization of ceramic materials based on the kinetic energy of detonation waves

Abstract

Abstract. The paper presents an innovatory low-energy detonation-spraying method suitable for the metallization of ceramic materials, in which the energy necessary for joining the metallic coating with the ceramic is delivered in a mechanical way. In the proposed method, the metallic particles, shot from the spraying gun, impinge onto the ceramic substrate with a high velocity, and their kinetic energy is transformed into heat delivered in a specified portion directly to the region of the metal/ceramic joint being formed. The stress distribution and the temperature field at the coating/substrate interface were analyzed also numerically with the aim to optimize the metallization process parameters so as to stimulate the formation of the coating/ceramic joint and, at the same time, to control the region of heat dissipation, the temperature, and the stress state induced in the joint.

Metal-ceramic functionally graded materials – manufacturing, characterization, application

“…Due to different thermal and mechanical properties of ceramic materials and metals, high internal stress is generated in bonded elements during the joining process and service load (e.g. thermal or mechanical) [19,20]. This stress exerts influence on both the performance and life-time of ceramics-metal joints.…”

Surface remelting treatment of 7075 aluminum alloy—microstructural and technological aspects

“…In the age of continuous improvement of fabrication technologies, the attention of researchers is more frequently focused on shaping the microstructure and properties of the product surface layer [1][2][3][4][5][6]. One of the modern methods of modifying the surface layers of engineering materials is surface heat treatment carried out using concentrated heat sources such as a laser beam or plasma jet.…”

Properties and Structure of Deposited Nanocrystalline Coatings in Relation to Selected Construction Materials Resistant to Abrasive Wear

“…Nanomaterials are classified as single or multiphase polycrystals characterized by a grain size on the order of 1 × 10 −9 m to 250 × 10 −9 m in diameter. At the upper limit of this range, the term “very fine” is used with respect to grain size on the order of 250–1000 nm in diameter [20,21,22,23,24,25,26,27]. Nanocrystalline materials are structurally characterized by a high volume fraction at the grain boundaries, which significantly changes their physical, chemical and mechanical properties in comparison to conventional coarse grains, whose grain size is usually on the order of 10–300 µm.…”