公开(公告)号：US12083625B2

公开(公告)日：2024-09-10

申请号：US16839753

申请日：2020-04-03

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Xiaomei Fang ,  Christopher J. Hertel ,  John D. Riehl ,  John W. Connell ,  Frank L. Palmieri ,  John W. Hopkins

IPC: B23K26/359 ,  B23K26/0622 ,  B23K103/04

CPC classification number: B23K26/359 ,  B23K26/0622 ,  B23K2103/05

Abstract: Methods and systems for the laser surface treatment on stainless steel alloys and nickel alloys may include a computer may be programmed to set a laser path corresponding to a predetermined geometric pattern. A laser may be coupled to the computer and apply a pulsed laser beam to a contact surface of the substrate along the predefined geometric pattern. The pulsed laser beam may have a laser power between 0.1 W and 100 W, single pulse fluence 1 mJ/mm2 and 1025 mJ/mm2 and a laser speed between 25.4 cm/s and 127 cm/s. The laser may generate an open pore oxide layer on the contact surface of the substrate with a thickness of 0.1-1 μm, an open pore distance of 0.05-1 μm. The open pore oxide layer may have a topography corresponding to the predefined geometric pattern. The topography may contain open pore structures and promote adhesive bond performance.

公开(公告)号：US20200230742A1

公开(公告)日：2020-07-23

申请号：US16253958

申请日：2019-01-22

Applicant: United Technologies Corporation

Inventor： Xiaomei Fang ,  John D. Riehl ,  Christopher J. Hertel ,  Dmitri Novikov ,  Henry H. Thayer ,  Donald H. Spencer

IPC: B23K26/21

Abstract: A method for treating a surface of a contoured titanium substrate used for adhesively bonded engine components. The method including applying energy from a fiber laser system to a contoured surface of a titanium substrate, the laser energy is distributed to the contoured titanium surface by at least one of direct light of sight, reflection, or scattering of one or more laser beam.

公开(公告)号：US11534863B2

公开(公告)日：2022-12-27

申请号：US16253958

申请日：2019-01-22

Applicant: United Technologies Corporation

Inventor： Xiaomei Fang ,  John D. Riehl ,  Christopher J. Hertel ,  Dmitri Novikov ,  Henry H. Thayer ,  Donald H. Spencer

IPC: B23K26/20 ,  B23K26/21 ,  B23K26/32 ,  B23K103/14 ,  F01D5/14 ,  F01D5/28 ,  F02K3/04

Abstract: A method for treating a surface of a contoured titanium substrate used for adhesively bonded engine components. The method including applying energy from a fiber laser system to a contoured surface of a titanium substrate, the laser energy is distributed to the contoured titanium surface by at least one of direct light of sight, reflection, or scattering of one or more laser beam.

公开(公告)号：US20180283613A1

公开(公告)日：2018-10-04

申请号：US15475213

申请日：2017-03-31

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Scott Alan Eastman ,  Xiaomei Fang ,  Mark Steven Thompson ,  Wenping Zhao

IPC: F17C13/00

Abstract: A confinement article for containing a fluid includes a wall and a nano-aligned barrier. The wall is constructed and arranged to contain the fluid. The nano-aligned barrier co-extends with the wall, and is constructed and arranged to restrict permeation of the fluid.