31 results about "Invar" patented technology

The present invention provides a thermally stable reference member comprising, at least one radiation attenuating element and at least one radiation scattering element. The radiation attenuating element comprising at least one aperture for transmission of radiation therethrough. The attenuating and scattering elements placed in series so that radiation transmitted through the reference member passes through each of the attenuating and scattering elements. The attenuating and scattering elements of the reference member may further comprise a thermally stable mount to hold the elements in a selected position relative to each other, and in relation to an instrument, or the elements may be bonded together. The radiation attenuating element may be comprised of a material selected from the group consisting of INVAR, tungsten, brass, and a material substantially non-transparent for incident radiation, and the radiation scattering element may be comprised of a radiation scattering material selected from the group consisting of opalescent glass, SPECTRALON, PTFE, ZERODUR, fused silica, quartz, sapphire, diamond, and a transparent material with essentially low thermal expansion.

The invention belongs to the field of composite materials and relates to a core-shell type TiB 2 ‑Fe 64 Ni 36 Invarky Composite. The core-shell TiB 2 ‑Fe 64 Ni 36 Invar-based composites are made of TiB 2 Reinforced structure of core-shell structure as the core and Fe as the matrix 64 Ni 36 Composed of Invar alloy; TiB 2 The reinforced structure of the core-shell structure is evenly distributed in the matrix, and the reinforced phase of different structures is formed by adjusting the added Ti / B atomic ratio; the core-shell TiB 2 ‑Fe 64 Ni 36 The composition of the tile-based composite material is laser deposited from the mixed powder of elemental Fe, Ni, Ti and Fe-B alloy; the particle size of the mixed powder is 140-300 mesh, the shape is spherical, and the chemical composition is: elemental Fe , Ni, and Ti are all 99.9% high-purity powders, and the B element content in the Fe-B alloy powder is 20wt.%. The invention provides a core-shell type TiB 2 ‑Fe 64 Ni 36 Invar-based composite material, the material composition is controllable, the performance is superior, and the Invar characteristics and wear resistance of the material can be taken into account at the same time. By changing the atomic ratio of Ti / B, the Fe 64 Ni 36 Composite coating prepared with TiB 2 Core-shell structure.

A kind of preparation method of Cu / Ag (Invar) composite material for electronic packaging, adopt main salt to be AgNO3, reductant is the chemical plating solution system of KNaC4H4O6 carry out chemical plating Ag to the Invar powder body that average particle diameter is 25-50 um, The electroless plating Ag(Invar) composite powder is prepared. The Ag(Invar) composite powder and Cu powder with an average particle size of 25-50 um are used as raw materials. After the ingredients are distributed according to 30-50 wt% Cu, the raw material powder is added Zinc stearate with a total volume of 0.5wt% is used as a lubricant, biaxial roller mixing, unidirectional pressing at 300-600 MPa, high-purity H2 atmosphere protection, sintering at 650-800°C for 1-3 h under normal pressure to prepare Cu / Ag(Invar) composite material, and adopts multi-pass cold rolling + annealing deformation heat treatment process to achieve near complete densification of the composite material. The 40 wt% Cu / Ag(Invar) composite prepared by the above process can achieve a density of 99%, a hardness of HV256, a thermal expansion coefficient of 11.2×10‑6 K‑1, and a thermal conductivity of 53.7 W·(m·K)‑ 1. It has excellent comprehensive performance and can be used as a heat sink material for high-performance electronic packaging.

The invention belongs to the field of composite flexible package, and particularly relates to a preparation method for a package expansion-free sealing cover film of a plastic container containing soybean sauce. The preparation method comprises the steps of preparation of a PETG printing film, preparation of a VMPET film, preparation of a cast polypropylene film, dry compounding and the like. Stereo block polypropylene and metallocene polyethylene are added into polypropylene resin for modification, and the special base film, namely the cast polypropylene film, produced through a CPP machine has the advantages of low-temperature heat sealing, easy uncovering, high air impermeability and the like. The package expansion-free sealing cover film prepared through the method is of the structure of a PETG film / a VMPET (vacuum polyester aluminum laminated film) / a CPP(cast polypropylene film) composite film. The composite film can fully generate a high-airtight environment for soybean sauce, so that the soybean sauce is in a good state and is not influenced by the outside.

An frit-sealed device comprising a resistive heating element having an electrically-closed-loop structure and process for frit-sealing a device by using such heating element. The element can be advantageously made of a metal such as Invar(R) and / or Kovar(R). The invention enables hermetic frit sealing with low residual stress in the seal. The invention is particularly advantageous for hermetic sealing of OLED display devices.

A grilling component employed to grill food items includes a grilling surface made of a material having a low constant of thermal expansion. In one example, the grilling surface is made of Invar(TM). Invar(TM) is a metal allow comprised of Iron and 36% Nickel, and may include other trace elements. The grilling surface further includes a non-stick coating, such as Teflon(TM). The grilling surface can also be a conveyor belt which travels over a heater.

A reflective metrological scale has a scale pattern of elongated side-by-side marks surrounded by reflective surface areas of a substrate, which may be a nickel-based metal alloy such as Invar <*> or Inconel <*> and may be a thin and elongated flexible tape. Each mark has a furrowed cross section and may have a depth in the range of 0.5 to 2 microns. The central region of each mark may be rippled or ridged and may be darkened to provide an enhanced optical reflection ratio with respect to surrounding reflective surface areas. A manufacturing method includes the repeated steps of (1) creating a scale mark by irradiating a surface of the substrate at a mark location with a series of overlapped pulses from a laser, each pulse having an energy density of less than about 1 joule per cm<2>, and (2) changing the relative position of the laser and the substrate by a displacement amount defining a next mark location on the substrate at which a next mark of the scale is to be created.

The invention discloses a concrete temperature stress testing machine with a temperature deformation self-compensation function and belongs to the technical field of concrete temperature stress and deformation testing simulation. A polished rod is manufactured from No.4J36 invar, a left fixed end, a right fixed end, fixed end universal joints and movable end universal joints are manufactured from No.4J36 invar, and a fixed chuck, a movable chuck and a load sensor are manufactured from No.45 steel. Parts of the testing machine are made from different steel materials, the combination length of the parts is designed according to a certain proportion, when outside temperature changes, the total temperature deformation difference generated by all steel parts of the concrete temperature stress testing machine can be zero, accordingly temperature deformation, caused by outside temperature change, of steel of the testing machine is offset, and temperature deformation self-compensation of the testing machine is achieved.