Abstract:
The present invention relates to an assembly body comprising a cermet member, a metal member and an intermediate member bonded to said cermet member and said metal member, wherein said cermet member includes an oxide phase and a metal phase, said intermediate member comprises at least a first intermediate layer and a second intermediate layer, said first intermediate layer is bonded to said cermet member, said first intermediate layer includes at least a first metal M1, said second intermediate layer includes at least a second metal M2, a melting point of said first metal M1 is lower than said second metal M2, a weight concentration of M1 at said first intermediate layer is higher than the weight concentration of M1 at said second intermediate layer, and the weight concentration of M2 at said second intermediate layer is higher than the weight concentration of M2 at said first intermediate layer.
Abstract:
A method for fabricating a metal-matrix composite tool includes positioning an inner mold within an outer mold and thereby defining a gap between the inner and outer molds. A first reinforcement material is then loaded into the gap, and the first reinforcement material is infiltrated at a first temperature with a first binder material and thereby forming an outer shell. The inner mold is then removed and a second reinforcement material is loaded at least partially into the outer shell and infiltrated at a second temperature with a second binder material and thereby forming a reinforced composite material. The second temperature is lower than the first temperature and the second binder material is different than the first binder material. The outer shell is attached to exterior portions of the reinforced composite material.
Abstract:
A ceramic turbine component is formed by a process including mixing a ceramic powder with a metal binder powder mixture. The powder mixture is then formed into a turbine component that is subsequently densified by partial transient liquid phase sintering. In an embodiment, the turbine component may be formed by an additive manufacturing process such as selective laser sintering.
Abstract:
A ceramic turbine component is formed by a process including mixing a ceramic powder with a metal binder powder mixture. The powder mixture is then formed into a turbine component that is subsequently densified by partial transient liquid phase sintering. In an embodiment, the turbine component may be formed by an additive manufacturing process such as selective laser sintering.
Abstract:
A metal-ceramic composite includes a ceramic substrate and a metallic composite. A groove is formed in a surface of the ceramic substrate and the metallic composite is filled in the groove. The metallic composite includes a Zr based alloy-A composite. A includes at least one selected from a group consisting of W, Mo, Ni, Cr, stainless steel, WC, TiC, SiC, ZrC and ZrO 2 . Based on the total volume of the Zr based alloy-A composite, the content of A is about30%to about70%by volume.A method for preparing the metal-ceramic composite is also provided.
Abstract:
The invention relates to a method of synthesis of substantially pure nanoparticles in a continuous -flow system, in which a precursor substance solution undergoes reduction reaction using a reducing agent solution and nanoparticles are produced, wherein the reduction reaction is terminated by adding an agent neutralizing the reducing agent and a stable nanoparticle colloid is produced. In the method of the invention a need for using surfactants or other organic molecules for nanoparticle stabilization has been eliminated.
Abstract:
Antibacterial metallic nanofoams, substrates having the nanofoam coated thereon, methods for preventing, inhibiting, and/or killing bacterial growth using the metallic nanofoams, and compositions and methods for making the metallic nanofoams.
Abstract:
The invention relates to a method for producing a porous element (2), comprising the following steps: - producing a powdery metal-ceramic composite material (4) comprising a metal matrix (6) and a ceramic portion (8) amounting to less than 25 percent by volume; - at least partially oxidizing the metal matrix (6) to obtain a metal oxide (10); - grinding the metal-ceramic composite material (4); - mixing the ground metal-ceramic composite material (4) with powdery ceramic supporting particles (12) to obtain a metal-ceramic/ceramic mixture (14); - shaping the metal-ceramic/ceramic mixture (14) into the porous element (2). The invention also relates to the preferable use of said porous element (2) as an energy storage medium in a battery.
Abstract:
The world is facing formidable challenges in meeting rising demands of clean water as the available supplies of freshwater are depleting due to (i) extended droughts, (ii) population growth, (iii) more stringent health based regulations and (iv) competing demands from a variety of users [ 1,2,3]. The protection of water treatment systems against potential chemical and biological terrorist acts is also becoming a critical issue in water resources planning [3, 4]. Today a number of techniques are used for treatment of water i.e. chemical and physical agent such as chlorine and its derivatives, Ultraviolet light [5], Boiling, Low frequency ultrasonic irradiation [6]. Research is underway to use advance nanotechnology in water purification for safe drinking [7]. Nanotechnology used for detection of pesticides [8] chemical and biological substances including metals (e.g. Cadmium, copper, lead, mercury, nickel, zinc), Nutrients (e.g. Phosphate, ammonia, nitrate, nitrite), Cyanide Organics, Algae (e.g. Cyanobacterial toxins) Viruses, Bacteria, Parasites, antibiotics and Biological agents are used for terrorism. Innovations in the development of novel technologies to desalinate water are among the most exciting and seem to be promising [9]. In this patent we introduce a new nanotechnology technique based on nanoparticles for waste water treatment with efficiency up to 94%. By adding thes Ίe Nanoparticles to the waste water, which adsorb all the dye and heavy metal elements. The Nanoparticles loaded with heavy metal elements were collecting using a powerful treatment unit within 10 minutes only. Most of the other waste water treatment techniques have problems in their recyclability and production cost on a large scale. However, we overcame these problems through these recyclable, low cost nanomaterials.
Abstract:
An object of the present invention is to provide a method for stably producing aluminum composites with excellent mechanical properties while keeping the temperature of molten aluminum to 950°C or less. According to an aspect of the present invention, there is provided a method for producing aluminum matrix composites, comprising the steps of: preparing a precursor in which aluminum powders, feed materials of titanium, feed materials of non-metal elements which can form a compound through combination with titanium, and active materials are mixed; adding the precursor into molten aluminum; and casting the molten aluminum.