摘要:
A silica glass member for semiconductor in which each concentration of Fe, Cu, Cr and Ni is 5 ppb or less and the concentration of an OH group is 30 ppm or less and which has a viscosity of 1013.0 poise or more at 1200null C. is provided as a silica glass member for semiconductor having high heat-resistance and higher purity.
摘要:
A plasma-resistant member for a semiconductor manufacturing apparatus, which can reduce the contamination level on a semiconductor wafer. The contents of Fe, Ni, Cr and Cu are made lower than 1.0 ppm respectively within a depth of at least 10 nullm from surface in a plasma-resistant member.
摘要:
The invention presents an immersion nozzle having corrosion resistance to steel of high oxygen content or type of steel treated with calcium, and capable of preventing adheres and deposits of molten steel and oxide inclusions on the nozzle inner wall, in which at least a part of its portion contacting with molten steel is composed of a refractory material containing 50 wt. % or more of a principal component including one or more types of magnesia, alumina, spinel, zirconia, mullite, and silica, and also 0.3 to 15 wt. % of boron nitride, and an organic binder.
摘要:
A manufacturing method for a silicon substrate having a strained layer, has steps of forming a plurality of atomic steps having a height of 0.1 nm or more on the surface of a silicon substrate, forming a plurality of terraces having a width of 0.1 nullm or more between the plurality of atomic steps and forming a SiGe layer or a SiGe layer and a Si layer on the silicon substrate.
摘要:
This invention provides a cleaning method of silicon wafer for obtaining a silicon wafer in which micro roughness thereof under spatial frequency of 20/nullm is 0.3 to 1.5 nm3 in terms of power spectrum density, by passing a process of oxidizing the silicon wafer with ozonized water and a process of cleaning said oxidized silicon wafer with hydrofluoric acid. Consequently, it is possible to remove surface adhering pollutant such as particles and metallic foreign matter with the surface structure of silicon wafer flattened up to atomic level by annealing maintained.
摘要:
A carbon wire heating element sealing heater is provided. Therein, a carbon wire heating element using carbon fibers is sealed in a quartz glass member, wherein absorption water quantity of the carbon wire heating element is 2null10null3 g/cm3 or less.
摘要翻译:提供碳丝加热元件密封加热器。 其中,使用碳纤维的碳线加热元件密封在石英玻璃构件中,其中碳线加热元件的吸收水量为2×10 -3 g / cm 3以下。
摘要:
A wafer inspection apparatus has a supporting means (10) for rotatably supporting a wafer (W) formed of a disk, a circumferential edge imaging means (40) for imaging a circumferential edge (S) of the wafer (W) that is supported by the supporting means for rotation, a notch imaging means (50) for imaging a notch (N), a notch illumination part (52) for illuminating the notch (N), and a control means (70) for processing image data imaged by the circumferential edge imaging means (40) and the notch imaging means (50). The circumferential edge imaging means (40) has a plurality of imaging cameras (41) for imaging a plurality of different parts in a thickness direction of the circumferential edge of the wafer (W). The different parts of the circumferential edge (S) of the wafer (W) include an apex at right angles to a surface of the wafer (W) and a front side bevel and a back side bevel inclined relative to the apex. The notch imaging means (50) for the wafer (W) having the notch (N) has a plurality of imaging cameras (51) for imaging different parts in the thickness direction of the notch (N).
摘要:
The invention provides a viscoelasticity measuring device which is capable of imparting a desired displacement profile to a sample under conditions close to that of actual use. The viscoelasticity measuring device is composed of a presser to impart displacements to a sample; a rod to convey said displacements to said presser; a control jig kept in contact with an upper end portion of said rod and adapted to move to impart a desired displacement to said rod; a load cell which detects a load exerted to the sample to detect a stress generated in the sample; and a displacement sensor to detect the displacement in said sample; said displacements imparted of the sample being defined in accordance with a configuration and a moving speed of said control jig.
摘要:
The fluid heating apparatus, in accordance with the present invention, developed to solve the technological problems described above is characterized by comprising at least a heating tube heating fluid to be supplied from fluid supply source, a heater section spirally formed on an outer periphery of the heating tube and a housing accommodating the heating tube and the heater section, wherein the heater section comprises a carbon wire heating element and a quartz glass tube in which the carbon wire heating element is enclosed.
摘要:
A single crystal pulling apparatus comprising, a laser unit 46 emitting a beam with a wavelength of 550 nm or less to form a spot on the surface of said melt, a spot camera 47 capturing the spot to produce electrical image signals corresponding thereto, an image processor 50 processing the electrical image signals to produce image data, and a control unit 49 receiving the image data and calculating a current melt level so that a crucible shaft lift 8 moves a crucible shaft up and down to adjust the melt level in accordance with the predetermined melt level.