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1123 results about "Joint surface" patented technology

Method for manufacturing semiconductor substrate

To obtain a semiconductor substrate having a high-quality Ge-based epitaxial film in a large area, a SiGe mixed crystal buffer layer and a Ge epitaxial film is grown on a main surface of a Si substrate 10. Although high-density defects are introduced in the Ge epitaxial film 11 from an interface between the Ge epitaxial film 11 and the Si substrate 10, the Ge epitaxial film is subjected to a heat treatment at a temperature of not less than 700° C. and not more than 900° C. to cause threading dislocations 12 to change into dislocation-loop defects 12′ near the interface between the Ge epitaxial film 11 and the Si substrate. A main surface of at least one of the Ge epitaxial film 11 with an ion implanted layer and a support substrate 20 is then subjected to a plasma treatment or ozone treatment for the purpose of surface cleaning, surface activation, and the like, after which the main surfaces of the Ge epitaxial film 11 and the support substrate 20 are appressed against and bonded to each other with their surfaces being determined as the joint surfaces. An external impact is then applied to the bonding interface, causing the Ge epitaxial film to be delaminated along a hydrogen ion implanted interface 13, thus obtaining a Ge thin film 14. A surface of the Ge thin film 14 is subsequently subjected to a final surface treatment (for example, CMP) to remove the damage caused by the hydrogen ion implantation, thus resulting in a GeOI substrate having the Ge thin film 14 on the surface thereof.
Owner:SHIN ETSU CHEM IND CO LTD

Method for determining normal contact rigidity of loaded joint part by considering interaction effect of micro-bulges on rough surfaces

ActiveCN106709207AOvercome the shortcomings of inaccurate calculation resultsScale-independentDesign optimisation/simulationSpecial data processing applicationsRough surfaceNormal load
The invention provides a method for determining normal contact rigidity of a loaded joint part by considering the interaction effect of micro-bulges on rough surfaces. The method comprises the following steps of: measuring microstructure data of contact surfaces, acquiring micro-profile data of contact surfaces of the joint part by using a three-dimensional profile measuring instrument, extracting the position coordinate of each micro-bulge peal in the length direction, and simulating micro-bulge forms of the rough surfaces; building a relation between a normal load and the contact rigidity; computing fractal parameters of the contact surfaces, theoretically computing the extracted data by using a structure function method, and acquiring fractal dimensions and scale coefficients of the surfaces; and according to the above steps, putting each parameter value of the material to finally compute the normal contact rigidity of the joint part. The new method for determining the normal contact rigidity of the joint surfaces provided by the invention overcomes the defect that the traditional method based on a fractal theory is inaccurate in computation result in the case of heavy load, and has the advantages of strong reliability, being close to actual situation, small computation amount and improved computation efficiency.
Owner:NORTHEASTERN UNIV

First tread wedge joint plate

The invention relates to the technical field of medical machinery, in particular to a first tread wedge joint plate. The first tread wedge joint plate comprises a plurality of fixing holes which are used for fixing the first tread wedge joint plate on a first metatarsal bone and an internal side wedge bone; a sliding hole which enables pressing between bones to be convenient during fusion of the first tread wedge joint is formed in the first tread wedge joint plate. According to the first tread wedge joint plate, tender moving of the first tread wedge joint surface is allowed when the bridge first tread wedge joint plate is fixed, namely, the first tread wedge joint surface gristle is kept and the joint is limited from moving; when the first tread wedge joint fuses the first tread wedge joint plate to be fixed, bone grafting after joint surface gristle is removed, pressing of the first tread wedge joint surface is achieved through a sliding hole at a far end of the first tread wedge joint plate, and accordingly the fusion rate is improved; the first tread wedge joint plate is in an anatomy type design, anatomical reduction is convenient, pre-bending of the first tread wedge joint plate during operation is not required, and the intensity of the first tread wedge joint plate is avoided from being influenced by bending during the operation.
Owner:上海斯地德商务咨询中心

Non-contact type magnetic adsorption wall-climbing robot adaptive to complex wall surface operations

The invention provides a non-contact type magnetic adsorption wall-climbing robot adaptive to complex wall surface operations. The wall-climbing robot comprises a vehicle body, an adsorption device, moving modules, a mechanical arm, a nondestructive inspection module, a polishing and welding module, a paint spraying module and a control sensing module. In the operation process of the wall-climbing robot, crawler belts of the moving modules can be attached to the inner wall of a steel pipe in a self-adaptive mode; and meanwhile, a frame of the vehicle body is provided with the moving modules, the adsorption device, the mechanical arm and the control sensing module, and hence the nondestructive inspection module, the polishing and welding module and the paint spraying module can be replaced according to different functions of the wall-climbing operation of the robot. The non-contact type magnetic adsorption wall-climbing robot has the characteristics that modular design is adopted, various detection and maintenance operations can be executed, loads are large, and no power source is required in the adsorption device; and the functions of pressure steel pipe wall climbing, welded joint nondestructive inspection, welded joint repair and welded joint surface coating corrosion resistance can be provided.
Owner:SHANGHAI JIAO TONG UNIV
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