公开(公告)号：US20070235701A1

公开(公告)日：2007-10-11

申请号：US11698743

申请日：2007-01-25

Applicant: K.S. Chandran

Inventor： K.S. Chandran

IPC: H01B1/08

CPC classification number: C04B35/58071 ,  C04B35/581 ,  C04B35/645 ,  C04B2235/3813 ,  C04B2235/5276 ,  C04B2235/5296 ,  C04B2235/5436 ,  C04B2235/5463 ,  C04B2235/549 ,  C04B2235/96 ,  C30B25/005 ,  C30B29/10 ,  C30B29/605

Abstract: A nanostructured monolithic titanium boride (TiB) material and methods of forming such a material are disclosed and described. This material has a room-temperature four-point flexural strength about three times that of commercially available titanium diboride (TiB2). The achievement of nanostructured internal microstructural arrangement having a network of interconnected titanium monoboride whiskers affords a very high strength to this material above some of the best ceramic materials available in the market. The material contains a small amount of titanium and a densifier, but it is largely made of TiB phase with substantially no TiB2. The nanostructured monolithic titanium boride material can be formed by high temperature processing of a powder precursor having carefully selected weight and size distributions of titanium powder, titanium diboride powder, and densifier powder. Potential applications of this material can include wear resistant components such as die inserts for extrusion dies, nozzles, armor, electrodes for metal refining etc. An important advantage of TiB over other hard ceramics is that TiB can be cut by electro-discharge machining (EDM) without difficulty, unlike most ceramics.

Abstract translation: 公开并描述了纳米结构的整体式钛硼化物（TiB）材料和形成这种材料的方法。 该材料的室温四点弯曲强度约为市售二硼化钛（TiB 2 N 2）的三倍。 纳米结构的内部微结构布置的实现具有相互连接的钛单晶须晶的网络，为市场上可获得的一些最佳陶瓷材料提供了非常高的强度。 该材料含有少量的钛和增稠剂，但它主要由基本上不含TiB 2 Ti的TiB相制成。 纳米结构的整体式钛硼化物材料可以通过具有仔细选择的钛粉末，二硼化钛粉末和增稠剂粉末的重量和尺寸分布的粉末前体的高温加工形成。 这种材料的潜在应用可以包括耐磨组件，例如用于挤出模具的模具插入件，喷嘴，装甲，用于金属精炼等的电极.TiB比其它硬质陶瓷的重要优点是TiB可以通过放电加工（EDM ）没有困难，不像大多数陶瓷。

公开(公告)号：US20070018139A1

公开(公告)日：2007-01-25

申请号：US11177907

申请日：2005-07-07

Applicant: K.S. Chandran

Inventor： K.S. Chandran

IPC: H01B1/12

CPC classification number: C04B35/58071 ,  C04B35/581 ,  C04B35/645 ,  C04B2235/3813 ,  C04B2235/5276 ,  C04B2235/5296 ,  C04B2235/5436 ,  C04B2235/5463 ,  C04B2235/549 ,  C04B2235/96 ,  C30B25/005 ,  C30B29/10 ,  C30B29/605

Abstract: A nanostructured monolithic titanium boride (TiB) material and methods of forming such a material are disclosed and described. This material has a room-temperature four-point flexural strength about three times that of commercially available titanium diboride (TiB2). The achievement of nanostructured internal microstructural arrangement having a network of interconnected titanium monoboride whiskers affords a very high strength to this material above some of the best ceramic materials available in the market. The material contains a small amount of titanium, but it is largely made of TiB phase with substantially no TiB2. The nanostructured monolithic titanium boride material can be formed by high temperature processing of a powder precursor having carefully selected weight and size distributions of titanium and titanium diboride powders. Potential applications of this material can include wear resistant components such as die inserts for extrusion dies, nozzles, armor, electrodes for metal refining etc. An important advantage of TiB over other hard ceramics is that TiB can be cut by electro-discharge machining (EDM) without difficulty, unlike most ceramics.

Abstract translation: 公开并描述了纳米结构的整体式钛硼化物（TiB）材料和形成这种材料的方法。 该材料的室温四点弯曲强度约为市售二硼化钛（TiB 2 N 2）的三倍。 纳米结构的内部微结构布置的实现具有相互连接的钛单晶须晶的网络，为市场上可获得的一些最佳陶瓷材料提供了非常高的强度。 该材料含有少量的钛，但它主要由TiB相制成，基本上不具有TiB 2 N 2。 纳米结构的整体式钛硼化物材料可以通过具有仔细选择的钛和二硼化钛粉末的重量和尺寸分布的粉末前体的高温处理形成。 这种材料的潜在应用可以包括耐磨组件，例如用于挤出模具的模具插入件，喷嘴，装甲，用于金属精炼等的电极.TiB比其它硬质陶瓷的重要优点是TiB可以通过放电加工（EDM ）没有困难，不像大多数陶瓷。

公开(公告)号：US20050208213A1

公开(公告)日：2005-09-22

申请号：US11122119

申请日：2005-05-03

Applicant: K.S. Chandran ,  Shampa Aich

Inventor： K.S. Chandran ,  Shampa Aich

IPC: B32B15/04 ,  C23C8/68

CPC classification number: C01B35/04 ,  B22F2998/00 ,  C04B35/62272 ,  C04B2235/3826 ,  C04B2235/3873 ,  C04B2235/404 ,  C04B2235/421 ,  C04B2235/526 ,  C04B2235/5264 ,  C22C32/0073 ,  C22C49/11 ,  C23C8/68 ,  B22F2201/00

Abstract: A borided titanium article can include a titanium mass having titanium monoboride whiskers infiltrating inward from a surface of the titanium mass to form an integral surface hardened region. The titanium mass can be almost any titanium based metal or alloy such as high purity titanium, commercial grade titanium, α-titanium alloy, α+β titanium alloy, β-titanium alloy, titanium composite, and combinations thereof. Borided titanium articles can be formed by methods which include providing a titanium mass, contacting a surface of the titanium mass with a boron source medium, and heating the titanium mass and boron source medium to a temperature from about 700° C. to about 1600° C. The boron source medium can include a boron source and an activator selected to provide growth of titanium monoboride whiskers. The boron source medium can be provided as a solid particulate mixture, liquid mixture, or as a gaseous mixture. During heating, boron from the boron source infiltrates into the titanium mass and forms titanium monoboride whiskers which improve the surface hardness, wear resistance, oxidation resistance, and corrosion resistance of the treated surface. The titanium monoboride whiskers can be controlled to have the desired dimensions, depending on the application requirements. Boriding titanium surfaces using these methods, provides a relatively inexpensive and effective process for improving the surface properties of titanium which are then useful in a wide variety of applications.

Abstract translation: 硼化钛制品可以包括具有从钛质材料表面向内渗透的钛单硼酸晶须的钛块，以形成整体表面硬化区域。 钛质量可以是几乎任何钛基金属或合金，例如高纯度钛，商业级钛，α-钛合金，α+β钛合金，β-钛合金，钛复合材料及其组合。 硼化钛制品可以通过以下方法形成：包括提供钛材料，使钛材料的表面与硼源介质接触，并将钛材料和硼源介质加热至约700℃至约1600℃的温度 硼源培养基可以包括硼源和选择用于提供单硼酸钛晶须生长的活化剂。 硼源介质可以作为固体颗粒混合物，液体混合物或作为气体混合物提供。 在加热过程中，来自硼源的硼渗透入钛质体中，形成了改善处理表面的表面硬度，耐磨性，抗氧化性和耐蚀性的钛单硼酸晶须。 根据应用要求，可以将钛单硼酸晶须控制为具有所需的尺寸。 使用这些方法的硼化钛表面提供了用于改善钛的表面性质的相对便宜且有效的方法，其然后可用于各种各样的应用中。