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1. 发明授权

US5858469A Method and apparatus for applying coatings using a nozzle assembly having passageways of differing diameter 失效
标题翻译：使用具有不同直径通道的喷嘴组件涂覆涂层的方法和装置
公开(公告)号：US5858469A
公开(公告)日：1999-01-12
申请号：US564915
申请日：1995-11-30
申请人： Purusottam Sahoo , Stephen G. Sitko
发明人： Purusottam Sahoo , Stephen G. Sitko
IPC分类号： B05B7/22 , C23C4/12 , C23C4/10 , B05B1/24 , B05C5/04
CPC分类号： B05B7/226 , C23C4/134
摘要： Known thermal spray apparatus are modified to achieve thermal spray coatings of increased hardness. Thermal spray apparatus operate to develop a plasma stream for introduction to a nozzle, for eventual application to the surface of a substrate. Upon entering the nozzle, the plasma stream is passed through a plasma cooling zone defined by a plasma cooling passageway, to a plasma accelerating zone defined by a narrowed passageway that expands into a plasma/particle confining zone for the discharge of material from the apparatus. The narrowed passageway of the apparatus is cooled, and the powder material to be applied by the apparatus is introduced into the plasma stream along the cooled, narrowed passageway. To apply thermal spray coatings of increased hardness to a substrate, the ratio of the length of the plasma/particle confining zone relative to the diameter of the plasma/particle confining zone (the "L/D" ratio) is increased from the more conventional value of about 5:1, preferably to a ratio in a range of from 7:1 to 16.5:1, for use with coating materials including WC--Co, Cr.sub.3 C.sub.2 --NiCr and Cr.sub.3 C.sub.2. Ratios of from 10:1 to 13:1 have been found to achieve a particularly desirable result. Also the method and the coatings obtained.
摘要翻译：修改已知的热喷涂设备以实现增加硬度的热喷涂。热喷涂装置用于开发用于引入喷嘴的等离子体流，以最终施加到基板的表面。在进入喷嘴时，等离子体流通过由等离子体冷却通道限定的等离子体冷却区域到由扩大成等离子体/颗粒限制区域的狭窄通道限定的等离子体加速区域，以从装置中排出材料。将设备的狭窄通道冷却，并将由设备施加的粉末材料沿冷却的狭窄通道引入等离子体流中。为了将具有增加的硬度的热喷涂涂层施加到基材上，等离子体/颗粒约束区域的长度相对于等离子体/颗粒约束区域的直径（“L / D”比）的比率从更常规的值为约5：1，优选为7：1至16.5：1的比例，用于包括WC-Co，Cr3C2-NiCr和Cr3C2的涂层材料。已经发现10：1至13：1的比例达到了特别理想的结果。还可以获得方法和涂层。

2. 发明授权

US5993976A Strain tolerant ceramic coating 失效
标题翻译：耐应变陶瓷涂层
公开(公告)号：US5993976A
公开(公告)日：1999-11-30
申请号：US971787
申请日：1997-11-18
申请人： Purusottam Sahoo , Stephen Sitko
发明人： Purusottam Sahoo , Stephen Sitko
IPC分类号： F01D5/28 , C23C4/02 , C23C4/10 , C23C4/12 , B32B3/00
CPC分类号： C23C4/02 , C23C4/11 , Y10T428/26
摘要： A strain tolerant ceramic coating, preferably for use as an abrasive coating on a substrate is provided. The coating is prepared from a yttria and zirconia powder having an average particle size less than 40 microns. The coating is formed by depositing the powder on the substrate by a plasma spray process. The as-applied coating contains essentially no macrocracks, but a post-stressed coating contains a random distribution, population, and orientation of microcracks and macrocracks.
摘要翻译：提供了耐应变陶瓷涂层，优选用作基底上的磨料涂层。涂层由平均粒度小于40微米的氧化钇和氧化锆粉末制备。通过等离子体喷涂方法将粉末沉积在基材上形成涂层。应用涂层基本上不含宏观裂纹，但后应力涂层含有微裂纹和宏观裂纹的随机分布，群体和取向。

3. 发明授权

US5518178A Thermal spray nozzle method for producing rough thermal spray coatings and coatings produced 失效
标题翻译：热喷涂喷涂方法，用于生产粗糙的热喷涂和涂层
公开(公告)号：US5518178A
公开(公告)日：1996-05-21
申请号：US204534
申请日：1994-03-02
申请人： Purusottam Sahoo , Anthony Mallilo
发明人： Purusottam Sahoo , Anthony Mallilo
IPC分类号： B05B7/22 , C23C4/12
CPC分类号： B05B7/226 , C23C4/134
摘要： Known thermal spray apparatus are modified to achieve rough thermal spray coatings. Thermal spray apparatus operate to develop a plasma stream for introduction to a nozzle, for eventual application to the surface of a substrate. Upon entering the nozzle, the plasma stream is passed through a plasma cooling zone defined by a plasma cooling passageway, to a plasma accelerating zone defined by a narrowed passageway that expands into a plasma/particle confining zone for the discharge of material from the apparatus. The narrowed passageway of the apparatus is cooled, and the powder material to be applied by the apparatus is introduced into the plasma stream along the cooled, narrowed passageway. For the appropriate heating (melting) and acceleration of MCrAlY powder particles, for application to the substrate which is to receive the thermal spray coating, the ratio of the cross-sectional area of the initial (plasma cooling) passageway relative to the cross-sectional area of the narrowed (plasma accelerating) passageway is reduced from the more conventional value of about 4:1 to a ratio of 2:1 or less.
摘要翻译：修改已知的热喷涂设备以实现粗糙的热喷涂。热喷涂装置用于开发用于引入喷嘴的等离子体流，以最终施加到基板的表面。在进入喷嘴时，等离子体流通过由等离子体冷却通道限定的等离子体冷却区域到由扩大成等离子体/颗粒限制区域的狭窄通道限定的等离子体加速区域，以从装置中排出材料。将设备的狭窄通道冷却，并将由设备施加的粉末材料沿冷却的狭窄通道引入等离子体流中。为了适用于MCrAlY粉末颗粒的加热（熔化）和加速，为了应用于接受热喷涂的基材，初始（等离子体冷却）通道的横截面积相对于横截面积的比率变窄（等离子体加速）通道的面积从大约4:1的更常规值减小到2:1或更小的比率。

4. 发明授权

US5456951A Thermal spray coating chamber and method of using same 失效
标题翻译：热喷涂室及其使用方法
公开(公告)号：US5456951A
公开(公告)日：1995-10-10
申请号：US164374
申请日：1993-12-09
申请人： Purusottam Sahoo
发明人： Purusottam Sahoo
IPC分类号： C23C4/12 , B05D1/08 , B05B15/12
CPC分类号： C23C4/12
摘要： A method for applying a thermal spray coating onto a substrate (24) includes the steps of providing chamber apparatus (10) including a chamber (16) having a gas flow assembly (23) that includes a gas injector (27) and a spray nozzle (30) therein for introducing, a gas and spray coating. The chamber has an adjustably sized restricted opening (18) that is continuously open to the ambient atmosphere (21) that is exterior of the chamber (16). The total gas flow is maintained from the gas flow assembly (23) at a predetermined rate based on the size of the restricted opening (18) and the amount of oxygen that is desired to be present during the spraying of the coating and thereafter until the spray coating solidifies on the substrate. Gas flow from the spray nozzle (30) is determined by optimum process parameters for coating specified materials. If the gas flow from the nozzle (30) is insufficient to provide the total gas flow, the gas injector (27) supplements the total gas flow.
摘要翻译：一种将热喷涂涂覆到基底（24）上的方法包括提供腔室装置（10）的步骤，该腔室装置（10）包括具有气体组件（23）的腔室（16），气体组件包括气体喷射器（27）和喷嘴（30），用于引入气体和喷涂。腔室具有可调节尺寸的限制开口（18），其连续地打开到室（16）外部的环境大气（21）。基于限制开口（18）的尺寸和在喷涂涂层期间期望存在的氧气的量，气体流动组件（23）以预定速率从气体流动组件（23）保持，然后直到喷涂在基材上固化。来自喷嘴（30）的气流通过用于涂覆特定材料的最佳工艺参数来确定。如果来自喷嘴（30）的气体流量不足以提供总气体流量，则气体喷射器（27）补充总气体流量。

5. 发明申请

US20060099440A1 High energy plasma arc process 审中-公开
标题翻译：高能等离子弧工艺
公开(公告)号：US20060099440A1
公开(公告)日：2006-05-11
申请号：US10984698
申请日：2004-11-09
申请人： Purusottam Sahoo
发明人： Purusottam Sahoo
IPC分类号： C03C27/02 , B32B15/00
CPC分类号： C23C4/02 , C23C4/11 , C23C4/134 , F01D5/288 , Y10T428/12611 , Y10T428/12937
摘要： A coating application process using a high energy plasma gun utilizing a low amperage and high voltage stabilized arc to deposit coatings with high deposition efficiency (De) and high bond strength under ASTM C 633 Specification.
摘要翻译：根据ASTM C 633规范，使用高能量等离子体枪的涂层施加方法，其利用低安培数和高电压稳定的电弧以高沉积效率（De）和高粘合强度沉积涂层。

6. 发明申请

US20070087210A1 High temperature insulative coating (XTR) 审中-公开
标题翻译：高温绝缘涂层（XTR）
公开(公告)号：US20070087210A1
公开(公告)日：2007-04-19
申请号：US10758565
申请日：2004-01-15
申请人： Purusottam Sahoo , Shane Richard , Cyril Magda , Gary Logan
发明人： Purusottam Sahoo , Shane Richard , Cyril Magda , Gary Logan
IPC分类号： B32B15/04 , B32B9/00
CPC分类号： C23C28/321 , C23C28/3215 , C23C28/345 , C23C28/3455 , C23C28/36
摘要： A thermal barrier coating with unique properties suitable for high temperature thermal insulation control on a substrate is provided. The coating is thermally sprayed, consisting of three layers: 1) a MCrAIY bond coat (basecoat), 2) an intermediate crack resistant ceramic coating, and 3) a top coat of yttria stabilized zirconia. The three layer coating is deposited, preferably, using an air plasma spray system with suitable macro cracks in the top coat, with an underlying crack resistant layer, to enable the ceramic top coat to have properties suitable for advanced gas turbine thermal barrier coatings.
摘要翻译：提供了具有适合于在基板上进行高温绝热控制的独特性质的热障涂层。该涂层被热喷涂，由三层组成：1）MCrAIY粘合涂层（底涂层），2）中间抗裂陶瓷涂层，以及3）氧化钇稳定的氧化锆的顶涂层。沉积三层涂层，优选使用在顶涂层中具有合适的大裂纹的空气等离子体喷涂系统和下面的抗裂层，以使陶瓷顶涂层具有适用于先进燃气轮机热障涂层的性能。

7. 发明申请

US20050123785A1 High temperature clearance coating 审中-公开
标题翻译：高温间隙涂层
公开(公告)号：US20050123785A1
公开(公告)日：2005-06-09
申请号：US10728014
申请日：2003-12-04
申请人： Purusottam Sahoo , Shane Richard , Cyril Magda
发明人： Purusottam Sahoo , Shane Richard , Cyril Magda
IPC分类号： B32B15/10
CPC分类号： C23C28/3215 , C23C4/02 , C23C4/11 , C23C28/3455 , Y02T50/67 , Y02T50/6765 , Y10T428/12736 , Y10T428/12743 , Y10T428/12771
摘要： A thermal barrier coating with abradable properties suitable for high temperature clearance control on a sealing surface is provided. The coating is thermally sprayed, consisting of a MCrAlY bond coat and a top coat of yttria stabilized zirconia containing polyester. The two layer coating is deposited using an air plasma spray system with suitable porosity levels to enable the ceramic top coat to have properties suitable for advanced gas turbine shroud block sealing purposes. This coating for sealing purposes is applicable to both industrial and flight gas turbine applications.
摘要翻译：提供了具有适合于在密封表面进行高温间隙控制的耐磨特性的热障涂层。该涂层被热喷涂，由MCrAlY粘合涂层和含有氧化钇稳定的含有聚酯的氧化锆表面涂层组成。使用具有合适孔隙率水平的空气等离子喷涂系统沉积双层涂层，以使陶瓷顶涂层具有适用于先进燃气轮机罩块密封目的的性能。这种用于密封目的的涂层适用于工业和飞行燃气轮机应用。

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