摘要:
An artificial quartz crystal growth method that includes applying a pressure that causes at least two substantially rectangular-parallelepiped-shaped quartz crystal substrates to abut each other in an X-axis direction with crystallographic axis directions of the quartz crystal substrates aligned with each other, and causing the at least two quartz crystal substrates to grow an artificial quartz crystal in a state where the pressure is being applied.
摘要:
A method for producing a component includes joining individual wall parts, especially for producing a melting crucible for use at a high operating temperature in a crucible-pulling method for quartz glass, wherein at least two wall parts of a refractory metal or of a base alloy of a refractory metal are provided, butt-joined to form a joint and joined together by sintering at a temperature above 1500° C. to form the component. A sealant is inserted into the joint to provide a component of improved tightness and to ensure improved sintering of the individual parts of the component. A component produced according to the method, particularly a melting crucible, particularly in a crucible pulling method for quartz glass, has the joint between the butt-joined walls closed in a gas-tight manner by a sealant.
摘要:
Crystals having a modified regular tetrahedron shape are provided. Crystals preferably have four substantially identical triangular faces that define four truncated vertices and six chamfered edges. The six chamfered edges can have an average length of l, and an average width of w, and 8≦l/w≦9.5.
摘要:
In a Li2O—Al2O3—SiO2 based crystallized glass using SnO2 as a substitute fining agent for As2O3 or Sb2O3, a crystallized glass having less yellow coloration is provided at low costs. The glass is a Li2O—Al2O3—SiO2 based crystallized glass comprising from 0.01 to 0.9% of SnO2 in terms of % by mass and having a content of each of As2O3 and Sb2O3 of 1,000 ppm or less as a glass composition, which has a V2O5 content of from 0.08 to 15 ppm in the glass composition.
摘要翻译:在使用SnO 2作为As 2 O 3或Sb 2 O 3的替代澄清剂的Li 2 O-Al 2 O 3 -SiO 2系结晶玻璃中,以低成本提供了黄色变浅的结晶化玻璃。 所述玻璃为Li2O-Al2O3-SiO2系结晶玻璃,其以质量%计含有0.01〜0.9质量%的SnO 2,作为玻璃组合物的As 2 O 3和Sb 2 O 3的含量为1000ppm以下,其具有V 2 O 5 玻璃组合物中的含量为0.08〜15ppm。
摘要:
According to an embodiment of the present invention, provided is a method of synthesizing nanowires that includes the following steps of: disposing a covering inside a reaction furnace such that the covering is spaced apart by a predetermined gap from a substrate which is provided for synthesis of nanowires; heating the reaction furnace; and synthesizing nanowires by allowing a source gas to be deposited on the substrate while flowing through the gap between the substrate and the covering.
摘要:
A pallet lever mechanism for an escapement mechanism including a structure carrying a balance and an escape wheel, the pallet lever including pallet stones cooperating with the escape wheel, and a flexible, multistable element, and the pallet lever cooperates with the balance with horns of a first portion of the pallet lever connected by one such flexible element to the structure or to a second portion of the pallet lever carrying the pallet stones connected by one such flexible element to the fixed structure or to the first portion. One flexible element includes a prestressed beam buckled in an S or Z shape, the pallet lever mechanism including a pivot forcing the beam to have a node at the middle thereof.
摘要:
Crystals having a modified regular tetrahedron shape are provided. Crystals preferably have four substantially identical triangular faces that define four truncated vertices and six chamfered edges. The six chamfered edges can have an average length of l, and an average width of w, and 8≦l/w≦9.5.
摘要翻译:提供具有改进的正四面体形状的晶体。 晶体优选具有四个基本相同的三角形面,其限定四个截顶和六个倒角边。 六个倒角边缘的平均长度可以为l,平均宽度为w,8和nlE; l / w≦̸ 9.5。
摘要:
Vacuum ultraviolet light with a wavelength of 200 nm or less is applied on the joining surfaces of first and second workpieces made from a crystal substrate and a glass substrate, or a glass substrate and a glass substrate from a light irradiation unit. The workpieces are conveyed to a workpiece cleaning and laminating mechanism by a conveyance mechanism, the joining surfaces are subjected to mega-sonic cleaning as needed, and the workpieces are aligned with the joining surfaces thereof facing each other, and laminated such that the joining surfaces are in contact with each other. After being laminated, the laminated workpieces are conveyed to a workpiece heating mechanism and heated to increase the workpiece temperature to a predetermined temperature, and this temperature is maintained until joining is completed. The laminated workpieces are brought into a thermally expanded state upon heating, and are joined in this state.
摘要:
According to an embodiment of the present invention, provided is a method of synthesizing nanowires that includes the following steps of: disposing a covering inside a reaction furnace such that the covering is spaced apart by a predetermined gap from a substrate which is provided for synthesis of nanowires; heating the reaction furnace; and synthesizing nanowires by allowing a source gas to be deposited on the substrate while flowing through the gap between the substrate and the covering.
摘要:
Anti-trip mechanism for limiting the travel of a timepiece balance including a pin projecting from a staff, including a flexible multistable or bistable element carrying an anti-trip stop member and which is fixed, via flexible and elastic connecting members, to a rigid structural element of a timepiece movement. One end of said anti-trip stop member is arranged, according to the angular position of the balance, to interfere with the trajectory of the pin, and to perform the function of a stop if the balance exceeds its normal angular travel.Each anti-trip stop member includes two arms whose respective ends each interfere with the trajectory of the pin.