Turbine nozzle piece parts with hvoc coatings

Abstract

A nozzle for an air cycle machine. The nozzle has a disk section having a central axis. The nozzle also includes a plurality of blades which extend a blade height H from a bladed face of the disk section. The plurality of blades are arranged radially about the disk section. The nozzle has a throat width W defined between each radially adjacent pair of the plurality of turbine blades. The nozzle includes a coating substantially encapsulating the disk section and the plurality of blades, wherein the coating contains more than 91 percent tungsten carbide by volume.

1 . A nozzle for an air cycle machine, comprising:
 a disk section having a central axis;   a plurality of blades which extend a blade height H from a bladed face of the disk section, the plurality of blades arranged radially about the disk section;   a throat width W defined between each radially adjacent pair of the plurality of turbine blades; and   a coating substantially encapsulating the disk section and the plurality of blades, wherein the coating contains more than 91 percent tungsten carbide by volume.   
     
     
         2 . The nozzle of  claim 1 , wherein the coating contains less than 8 percent cobalt by volume. 
     
     
         3 . The nozzle of  claim 1 , wherein the plurality of blades consists of 34 blades. 
     
     
         4 . The nozzle of  claim 1 , wherein the blade height H is 0.940 cm. 
     
     
         5 . The nozzle of  claim 1 , wherein the throat width is 0.222 cm. 
     
     
         6 . The nozzle of  claim 1 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 7.103 cm square. 
     
     
         7 . The nozzle of  claim 1 , wherein the plurality of blades consists of 19 blades. 
     
     
         8 . The nozzle of  claim 1 , wherein the blade height H is 0.686 cm. 
     
     
         9 . The nozzle of  claim 1 , wherein the throat width is 0.340 cm. 
     
     
         10 . The nozzle of  claim 1 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 4.432 cm square. 
     
     
         11 . The nozzle of  claim 1 , wherein the blade height H is 0.318 cm. 
     
     
         12 . The nozzle of  claim 1 , wherein the blade height H is 0.393 cm. 
     
     
         13 . The nozzle of  claim 1 , wherein the throat width is 0.241 cm. 
     
     
         14 . The nozzle of  claim 1 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.451 cm square. 
     
     
         15 . The nozzle of  claim 1 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.806 cm square. 
     
     
         16 . The nozzle of  claim 1 , wherein the plurality of blades consists of 23 blades. 
     
     
         17 . The nozzle of  claim 1 , wherein the blade height H is 0.305 cm. 
     
     
         18 . The nozzle of  claim 1 , wherein the throat width is 0.234 cm. 
     
     
         19 . The nozzle of  claim 1 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.639 cm square. 
     
     
         20 . The nozzle of  claim 1 , wherein the coating has a thickness between 50.8 μm and 101.6 μm. 
     
     
         21 . The nozzle of  claim 1 , wherein the coating comprises a metal alloy having a surface coating adhesion strength greater than 10,000 psi. 
     
     
         22 . The nozzle of  claim 20 , wherein the coating comprises a metal alloy having a surface coating adhesion strength greater than 10,000 psi. 
     
     
         23 . A nozzle for an air cycle machine, comprising:
 a disk section having a central axis;   a plurality of blades which extend a blade height H from a bladed face of the disk section, the plurality of blades arranged radially about the disk section;   a throat width W defined between each radially adjacent pair of the plurality of turbine blades; and   a coating substantially encapsulating the disk section and the plurality of blades, wherein the coating has a thickness between 50.8 μm and 101.6 μm.   
     
     
         24 . The nozzle of  claim 23 , wherein the coating contains less than 8 percent cobalt by volume. 
     
     
         25 . The nozzle of  claim 23 , wherein the plurality of blades consists of 34 blades. 
     
     
         26 . The nozzle of  claim 23 , wherein the blade height His 0.940 cm. 
     
     
         27 . The nozzle of  claim 23 , wherein the throat width is 0.222 cm. 
     
     
         28 . The nozzle of  claim 23 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 7.103 cm square. 
     
     
         29 . The nozzle of  claim 23 , wherein the plurality of blades consists of 19 blades. 
     
     
         30 . The nozzle of  claim 23 , wherein the blade height H is 0.686 cm. 
     
     
         31 . The nozzle of  claim 23 , wherein the throat width is 0.340 cm. 
     
     
         32 . The nozzle of  claim 23 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 4.432 cm square. 
     
     
         33 . The nozzle of  claim 23 , wherein the blade height H is 0.318 cm. 
     
     
         34 . The nozzle of  claim 23 , wherein the blade height H is 0.393 cm. 
     
     
         35 . The nozzle of  claim 23 , wherein the throat width is 0.241 cm. 
     
     
         36 . The nozzle of  claim 23 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.451 cm square. 
     
     
         37 . The nozzle of  claim 23 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.806 cm square. 
     
     
         38 . The nozzle of  claim 23 , wherein the plurality of blades consists of 23 blades. 
     
     
         39 . The nozzle of  claim 23 , wherein the blade height H is 0.305 cm. 
     
     
         40 . The nozzle of  claim 23 , wherein the throat width is 0.234 cm. 
     
     
         41 . The nozzle of  claim 23 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.639 cm square. 
     
     
         42 . The nozzle of  claim 23 , wherein the coating comprises a metal alloy having a surface adhesion strength greater than 10,000 psi. 
     
     
         43 . A nozzle for an air cycle machine, comprising:
 a disk section having a central axis;   a plurality of blades which extend a blade height H from a bladed face of the disk section, the plurality of blades arranged radially about the disk section;   a throat width W defined between each radially adjacent pair of the plurality of turbine blades; and   a coating substantially encapsulating the disk section and the plurality of blades, wherein the coating comprises a metal alloy having a surface coating adhesion strength greater than 10,000 psi.   
     
     
         44 . The nozzle of  claim 43 , wherein the coating contains less than 8 percent cobalt by volume. 
     
     
         45 . The nozzle of  claim 43 , wherein the plurality of blades consists of 34 blades. 
     
     
         46 . The nozzle of  claim 43 , wherein the blade height H is 0.940 cm. 
     
     
         47 . The nozzle of  claim 43 , wherein the throat width is 0.222 cm. 
     
     
         48 . The nozzle of  claim 43 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 7.103 cm square. 
     
     
         49 . The nozzle of  claim 43 , wherein the plurality of blades consists of 19 blades. 
     
     
         50 . The nozzle of  claim 43 , wherein the blade height H is 0.686 cm. 
     
     
         51 . The nozzle of  claim 43 , wherein the throat width is 0.340 cm. 
     
     
         52 . The nozzle of  claim 43 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 4.432 cm square. 
     
     
         53 . The nozzle of  claim 43 , wherein the blade height H is 0.318 cm. 
     
     
         54 . The nozzle of  claim 43 , wherein the blade height H is 0.393 cm. 
     
     
         55 . The nozzle of  claim 43 , wherein the throat width H is 0.241 cm. 
     
     
         56 . The nozzle of  claim 43 , and further including a flow area A defined by the surface area of the bladed face of the disk less the area covered by the plurality of blades, and wherein the flow area A is equal to 1.451 cm square. 
     
     
         57 . The nozzle of  claim 43 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.806 cm square. 
     
     
         58 . The nozzle of  claim 43 , wherein the plurality of blades consists of 23 blades. 
     
     
         59 . The nozzle of  claim 43 , wherein the blade height H is 0.305 cm. 
     
     
         60 . The nozzle of  claim 43 , wherein the throat width is 0.234 cm. 
     
     
         61 . The nozzle of  claim 43 , and further including a flow area A defined by the surface area along the bladed face of the disk and between the blades, and wherein the flow area A is equal to 1.639 cm square.