Honeywell International Inc.

Alliedsignal Inc.

Margaret Eagan

Ilan Golecki

Dave Narasimhan

Milton Ortiz

Alexander S Kozlov

Thirumalai G Palanisamy

Harmohan N Singh

Steven Hoenig

A nickel base single crystal compliant layer on a ceramic blade has the capability to sustain high stresses and high operating temperature. Layers of nickel and platinum bonded on a single crystal superalloy over a sputtered gold-chromium layer support the high stress levels at elevated temperature without extrusion of the soft platinum or nickel layer and without destruction of an NiO compliant surface. The compliant layers have survived stress and temperature conditions without failure to the ceramic blade and the system can be stressed/heated and unloaded/cooled repeatedly without damage to the ceramic blades. A single crystal nickel base superalloy (i.e., SC180) has high strength properties at elevated temperature. Thin layers of chromium followed by gold are e-beam evaporated on one side of a polished surface of the alloy. Pure nickel is electroplated over this e-beam gold-chromium layer. Platinum is either electroplated or plated electrolessly over the nickel layer. The structure is annealed in vacuum or inert atmosphere to allow the diffusion of gold-chromium alloy into the superalloy and permit the nickel layer and diffusion of nickel into platinum to form a multilayer structure which is metallurgically bonded. The sheet is oxidized in air to allow diffusion of the nickel layer through the platinum to come to the surface and oxidize forming nickel oxide. This nickel oxide layer acts as the load distribution layer which does not extrude and the structural integrity of the compliant layer is maintained by the high-strength single crystal superalloy.

Ceramic turbine blade attachment having high temperature, high stress compliant layers and method of fabrication thereof

Described are various improved methods of forming stable metallization for electronic devices, electromechanical devices, force-sensing devices and accelerometers. Also described are various improved electronic devices, electromechanical devices, force-sensing devices, and accelerometers.

Method for forming an electro-mechanical device

A method of predicting by non-invasive testing the available energy of a battery at any state of charge by acquiring data of the parameters of internal resistance (IR), open circuit voltage (OCV) and temperature (T), the points of voltage and current of the slope on a positive current ramp of V and I at the transition from charge to overcharge and on a negative current ramp of V and I at the transition from overcharge to charge for a plurality of batteries. Next an algorithm in the form of a linear equation is developed using this data. The available energy of a battery under test is predicted by acquiring from it the numerical data values of these parameters and applying them to the algorithm.

Method and apparatus for predicting the available energy of a battery

A method of forming a thin film metallization layer having a predetermined residual stress and a predetermined sheet resistance and force measuring devices formed using the methods.

Controlled-stress stable metallization for electronic and electromechanical devices

Described are various improved methods of forming electronic devices, electro-mechanical devices, force-sensing devices, and accelerometers. Also described are various improved electronic devices, electro-mechanical devices, force-sensing devices, and accelerometers. The device comprises a plurality of vibrating beams joined with a support portion and configured for movement relative to the support portion. A layer of electrically conductive material is disposed over at least some of the surface of the moveable portion and support portion, the layer comprising an inert or a noble material having a Young's modulus which is greater than that of elemental gold. Alternatively, the layer may comprise an inert material having a coefficient of expansion which is less than that of elemental gold.

Growing community of inventors

Boonton Township, NJ, United States of America

Margaret Eagan