摘要:
A method of making an article using an additive manufacturing technique includes depositing a powder. The powder includes particles formed from an article material and having particle surfaces. A coating formed from a sacrificial coating is deposited over the particle surface. The sacrificial material has a composition that is different from the composition of the article material and is separated from the article material during fusing of the article material into a layer of an additively manufactured article.
摘要:
Compositions and methods of producing discrete nanotubes and nanoplates and a method for their production. The discrete nanotube/nanoplate compositions are useful in fabricated articles to provide superior mechanical and electrical performance. They are also useful as catalysts and catalyst supports for chemical reactions.
摘要:
Various embodiments of the present invention are directed to a children's rocker adapted for providing simultaneous rocking and swinging motion for a child positioned therein. According to various embodiments, the children's rocker generally comprises a frame configured for rocking movement on a support surface and a child support suspended from the frame by one or more attachment members. In various embodiments, the attachment members are generally configured to permit the child support to swing along an arcuate path relative to the frame. In addition, in particular embodiments, the child support may be adapted for gliding motion relative to the rocker's frame.
摘要:
A fiber structure and method of making the same are provided. The fiber structure comprises a microfiber structure having a nanofiber thereon. The nanofiber is formed by electrospinning a precursor solution to form a precursor nanofiber. The electrospun precursor nanofiber is deposited on the microfiber structure and fused therewith. In one preferable embodiment, silica nanofibers are formed on and fused with a glass microfiber.
摘要:
One or more two-dimensional fiber fabrics of carbon or carbon precursor fibers are impregnated (58, 59) by a solution or a suspension capable of allowing a dispersion of discrete ceramic particles to remain in the fiber fabric, and a fiber preform (51) is made by superposing plies formed of two-dimensional fabric made of carbon or carbon precursor fibers, the plies being bonded to one another, and at least some of the plies being at least partially formed of a previously-impregnated two-dimensional fabric. The field of application is particularly that of friction parts made of C/C composite material with incorporated ceramic particles.
摘要:
Nanostructures and methods of fabrication thereof are disclosed. One representative nanostructure includes a silicon dioxide (SiO2)/tin oxide (SnOx) nanostructure, where x is between about 1 to about 2. The SiO2/SnOx nanostructure includes a SiO2 nanostructure having SnOx nanoclusters dispersed over a portion of the surface of the SiO2 nanostructure.
摘要翻译:公开了纳米结构及其制造方法。 一个代表性的纳米结构包括二氧化硅(SiO 2)/氧化锡(SnO x X)纳米结构,其中x在约1至约2之间.SiO 2 纳米结构的纳米结构包括分散在SiO 2纳米结构。
摘要:
A composite composition and a method of making such a composite that is composed of a matrix material and dispersed reinforcement nanotubes that are substantially aligned along at least one specified direction or axis. Also a method for making a continuous fiber-reinforced composite object by combining a reinforcement fiber tow with a solidifying matrix material to form a pre-impregnated tow or towpreg, providing a dispensing head capable of dispensing the towpreg onto a base member positioned a distance from this head with the head and base member being driven by motion devices electronically connected to a motion controller regulated by a computer, and operating and moving the head relative to the base member to dispense multiple layers of towpreg in accordance with a CAD-generated deposition path along which the dispensing head can be allowed to trace out individual layers by following a selected algorithm so that the number of path interruptions at which the towpreg must be tentatively cut off from the dispensing head is minimized.
摘要:
Binder compositions are disclosed that include silica aquasols having silica that is metal-modified to include a monolayer or less of a metal such as aluminum, tin, zinc or lead, and deionized to a pH of 2,5-7.0 and a water soluble polymer such as poly(vinyl alcohol).An adhesive that includes a silica aquasol, an oxygen-moiety containing polymer, and clay, the surface of the silica being modified to include a metal, and the silica aquasol being deionized to a pH of 2.5 to 7.
摘要:
A body including a first phase having silicon carbide, a second phase comprising a metal oxide, the second phase being a discrete intergranular phase located at the grain boundaries of the first phase, and the body has an average strength of at least 700 MPa.
摘要:
Included are methods to make ceramic proppants. The methods comprise coating green proppants with at least one reactive alumina or zirconium agent, such as gamma alumina. Also included are green proppants and liquid-phase sintered proppants made with the use of the reactive agent. Further included are uses for these proppants, such as in the oil and gas recovery areas.