摘要:
A semiconductor device according to an embodiment includes: a silicon carbide layer; a silicon oxide layer; and a region disposed between the silicon carbide layer and the silicon oxide layer and having a nitrogen concentration equal to or more than 1×1021 cm−3. Nitrogen concentration distribution in the silicon carbide layer, the silicon oxide layer, and the region have a peak in the region, a nitrogen concentration at a position 1 nm away from the peak to the side of the silicon oxide layer is equal to or less than 1×1018 cm−3, and a carbon concentration at the position is equal to or less than 1×1018 cm−3.
摘要:
A gas branching apparatus that branches and supplies a gas to first to N-th supply targets, includes first to N-th pipes wherein the first to N-th pipes are each branched into first to N-th branch pipes on a downstream end side, and wherein the i-th branch pipes of the respective first to N-th pipes are connected in common to the i-th supply target, and the i-th branch pipes of the respective first to N-th pipes are provided with valves, respectively, where i denotes each of integers of 1 to N.
摘要:
A threadlike metallic or metallized reinforcer, for example a thread, film, tape or cord made of carbon steel, at the periphery of which is positioned a layer of metal referred to as “surface metal” chosen from copper, nickel and copper/nickel alloys, is characterized in that this surface metal layer is itself coated, at least in part, with at least one layer of graphene; preferably, there is grafted, to this graphene, at least one functional group which can crosslink to a polymer matrix. This reinforcer of the invention is effectively protected from corrosion by virtue of the graphene present at the surface; advantageously, it can be adhesively bonded directly, without adhesion primer or addition of metal salt, to an unsaturated rubber matrix, such as natural rubber, by virtue of the possible functionalization of this graphene.
摘要:
A shaping tooling for chemical vapor infiltration of a fiber preform includes a structural enclosure formed by supports each provided with a multiply-perforated zone. Each of the supports has in its inside face an uncased zone that includes the multiply-perforated zone. The shaping tooling further includes first and second shaping mold functional elements, each present in a respective one of the uncased zones of the support. Each shaping mold functional element has a first face of a determined shape corresponding to the shape of the part that is to be made and a second face that is held facing the inside face of a support. Each functional element has a plurality of perforations and presents a number of perforations, a size of perforations, or a shape of perforations that differs from the number, the size, or the shape of the perforations present in the facing support.
摘要:
In an apparatus for producing thin layers on substrates for solar cell production, wherein the thin layers are applied by an APCVD process at temperatures of more than 250° C., the substrates are conveyed on a horizontal conveyor path and coated by means of an APCVD coating in continuous operation. The conveyor path has conveyor rollers, which consist of a temperature-resistant, non-metallic material, preferably of ceramic. A heating device and/or a purge gas feeding device is/are arranged on that side of the conveyor path which is remote from the coating apparatus.
摘要:
Methods and systems include supplying pulsed microwave radiation through a waveguide, where the microwave radiation propagates in a direction along the waveguide. A pressure within the waveguide is at least 0.1 atmosphere. A supply gas is provided at a first location along a length of the waveguide, a majority of the supply gas flowing in the direction of the microwave radiation propagation. A plasma is generated in the supply gas, and a process gas is added into the waveguide at a second location downstream from the first location. A majority of the process gas flows in the direction of the microwave propagation at a rate greater than 5 slm. An average energy of the plasma is controlled to convert the process gas into separated components, by controlling at least one of a pulsing frequency of the pulsed microwave radiation, and a duty cycle of the pulsed microwave radiation.
摘要:
A vapor deposition device includes a reactor including a reaction chamber and an injector for injecting vapor into the reaction chamber. The device also includes a manifold for delivering vapor to the injector. The manifold includes a manifold body having an internal bore, a first distribution channel disposed within the body in a plane intersecting the longitudinal axis of the bore, and a plurality of supply channels disposed within the body and in flow communication with the first distribution channel and with the bore. Each of the first supply channels is disposed at an acute angle with respect to the longitudinal axis of the bore, and each of the supply channels connects with the bore at a different angular position about the longitudinal axis. The distribution channel (and thus, the supply channels) can be connected with a common reactant source. Related deposition methods are also described.
摘要:
An ALD coating method to provide a coating surface on a substrate is provided. The ALD coating method comprises: providing a deposition heading including a unit cell having a first precursor nozzle assembly and a second precursor nozzle assembly; emitting a first precursor from the first precursor nozzle assembly into chamber under atmospheric conditions in a direction substantially normal to the coating surface; emitting a second precursor from the first precursor nozzle assembly into chamber under atmospheric conditions in a direction substantially normal to the coating surface; removing moving the substrate under the deposition head such that the first precursor is directed onto a first area of the coating surface prior to the second precursor being directed onto the first area of the coating surface.
摘要:
A low-pressure chemical vapor deposition (LPCVD) apparatus and a thin-film deposition method thereof. The apparatus comprises a reaction furnace, having reaction gas input pipelines respectively arranged at a furnace opening part and a furnace tail part. During thin film deposition, each reaction gas is synchronously introduced into the reaction furnace through the input pipeline at the furnace opening part and the input pipeline at the furnace tail part.
摘要:
Provided is a method for manufacturing a Zn—Mg alloy-coated steel sheet having high blackening resistance and coating adhesion. In one implementation, the method may include forming a Zn—Mg coating layer on a base steel sheet and performing a combustion chemical vapor deposition (CCVD) process to form an oxide film. The oxide film may include a metal oxide and the metal oxide may include silicon oxide (SiO2) and magnesium oxide (MgO). The base steel sheet may be maintained within a temperature range of 330° C. to 450° C. during the performing of the CCVD process.