Search results
Results from the WOW.Com Content Network
Transient liquid phase diffusion bonding (TLPDB) is a joining process that has been applied for bonding many metallic and ceramic systems which cannot be bonded by conventional fusion welding techniques. The bonding process produces joints with a uniform composition profile, tolerant of surface oxides and geometrical defects.
The bonding temperature can be lowered using a higher applied pressure and vice versa, considering that high pressure increases the chances of damage to the structural material or the films. [8] The bonding process itself takes place in a vacuum or forming gas environment, e.g. N 2. [10]
The procedural steps of the direct bonding process of wafers any surface is divided into wafer preprocessing, pre-bonding at room temperature and; annealing at elevated temperatures. Even though direct bonding as a wafer bonding technique is able to process nearly all materials, silicon is the most established material up to now. Therefore, the ...
The diffusion bonding method can be used widely, joining either similar or dissimilar materials, and is also important in processing composite materials. The process is not extremely hard to approach and the cost to perform the diffusion bonding is not high. [14] The material under diffusion is able to reduce the plastic deformation.
Two metal sheets are welded together at their edges, then heated within the confines of a female mould tool. When the part is hot, an inert gas is injected between the two sheets ; the part becomes hollow to the form of the mould. [1] Parts may be welded in other areas than the edges to give an internal structure as the sheets are blown.
In physics, chemistry, and other related fields like biology, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic states of matter : solid , liquid , and gas , and in rare cases, plasma .
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
Liquid phase sintering is a sintering technique that uses a liquid phase to accelerate the interparticle bonding of the solid phase. In addition to rapid initial particle rearrangement due to capillary forces, mass transport through liquid is generally orders of magnitude faster than through solid, enhancing the diffusional mechanisms that drive densification. [1]