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Showing 1 to 20 of 30 for “"Brazing."”.
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Brazing alloys for ceramic to metal joining
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1987.
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Ultra wide gap brazing of high temperature cast steel boiler valves
Includes bibliographical references (pages 77-80).
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Development of new high entropy alloys for brazing of Ni-base superalloys
… metal (Fe5Co20Ni20Mn35Cu20) was designed for brazing of Inconel 600 alloy. Thermodynamic simulation, using Thermo-Calc software, was performed to design the composition of the HEA. A face-centered cubic (FCC) crystal structure was achieved that balanced strength, ductility and a melting range …
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Active metal brazing of alumina to Kovar® using Ag–Cu–Ti-based alloys
… resultant microstructure of altering the peak brazing temperature (Tp), time at Tp and the purity of the alumina with up to ~5 wt.% silica have been determined. Two commercially available Ag–Cu–Ti-based ABAs containing 1.8 and 4.5 wt.% Ti commonly used for the brazing of alumina were used in …
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Study of glass-ceramics and brazing alloys for joining oxide and non-oxide ceramic matrix composites in corrosive and high-temperature environments
L'abstract è presente nell'allegato / the abstract is in the attachment
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Improved braze joint quality through use of enhanced surface technologies
… realities of business do necessitate that the brazing advancement comes at a cost that is equal to or better than today's brazing techniques leading up to the second goal for this project, to utilize the microengineered surface structures to decrease the amount of braze alloy and flux materials …
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The effect of the surface condition of Aluminium ingot (AA3003) during roll bonding with clad Aluminium alloy (AA4045) to form an Aluminium brazing material
… of the products made at Hulamin is the aluminium brazing sheet. The aluminium brazing sheet is made from two aluminium alloys, AA3003 and AA4045. The main alloying element in the 3XXX series alloy is manganese and the main alloying element in the 4XXX series alloy is silicon. An aluminium brazing …
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The formation of brittle phases in brazed zirconium joints
… metallurgical interactions that occur during the brazing of zirconium with Ag-28Cu filler, with particular reference to their effect on mechanical properties. The ultimate aim was to provide information that would aid in the production of tougher brazed zirconium joints than are currently being …
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Automatic modification of part geometries subject to manufacturing constraints using fuzzy logic
… tedious to compute. For instance, metal-ceramic brazing requires adjustments to the part geometry primarily to accommodate thermal expansion and to allow for the insertion of a narrow braze-filler gap. These adjustments depend on the particular geometry, material properties, and processing …
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Enhancement of Pool Boiling Heat Transfer by Brazed Aluminum Microporous Coating in Saturated Water
… aluminum surface. The coating is manufactured by brazing an aluminum powder onto a plain aluminum surface. The microporous coating enhances the NBHT by creating microscale pores. These pores provide reentrant cavities that enhance boiling. Their properties are controlled by varying the brazing …
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Rapid solidification of zinc based alloys
… into two areas : the development of zinc based brazing alloys for the joining of copper produced by the rapid solidification technique; the study of the development of microstructures in rapidly solidified dilute zinc alloys. A new model has been proposed, based on the present experimental …
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THE STRENGTH OF BRAZED SINGLE-LAP JOINTS
Brazing is a critical materials-joining technology because it can join like or dissimilar materials, create high performance joints for use at high operating temperatures, and create thousands of joints simultaneously due to how the liquid brazing filler metal wets the base material and flows. The …
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Design and Manufacture of an Ultrasonic Transducer for Long-term High Temperature Operation
… element. Various high temperature adhesives and brazing alloys were investigated to bond stable bonding at high temperatures. An aluminum-based brazing alloy was found to yield reliable bonding between lithium niobate piezoelement and porous zirconia backing and alumina matching layer. None of …
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Design, fabrication, and characterization of a micro fuel processor
… connected to a low-temperature package via the brazing of pre-fabricated, thin-walled glass tubes. The design also replaces traditional deep reactive ion etching (DRIE) with wet potassium hydroxide (KOH) etching, an economical and time-saving alternative. A glass brazing method that effectively …
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Applying human-computer interaction methodologies to the development of computer-aided design software
… user interface (GUI) for the metal-ceramic brazing process: First, a GUI for the metal-ceramic brazing process was designed and implemented. Subjects were then invited to test the GUI by performing a set of benchmark tasks. The results of these tests were analyzed, both to characterize …
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Design and fabrication of evaporators for thermo-adsorptive batteries
… exchanger, fabrication techniques, including brazing, copper sintering, and bonding porous media were explored and characterized. In addition, the quarter-length design was fabricated and insights from its construction are proposed as recommendations for future work.
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Mechanical behavior of dip-brazed aluminum sandwich panels
… sandwich panel assemblies were joined via dip brazing. Defects were introduced into some panels to quantify the effect on strength and stiffness. Hybrid sandwich panels, consisting of foam material in the void spaces of the square and triangular cells were evaluated for the effect on the defect …
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Modification and Integration of Shape Memory Alloys Through Thermal Treatments and Dissimilar Metal Joining
… mixed. A novel joining process, Autogenous Laser Brazing, is described for the joining of a shape memory alloy to a dissimilar metal. The morphology and strength of the resultant joints is experimentally characterized. Fundamental understanding of the joint formation mechanism is developed through …
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Thermodynamics and kinetics of ceramic/metal interfacial interactions
… reactions occurring during the active metal brazing of zirconia-based ceramics.
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