Low and extra low sulfur alloys for repair

Abstract

A method for repairing, refurbishing, or replacing a turbine engine component or sub-component includes the steps of providing a turbine engine component or sub-component having a site to be repaired, refurbished, or replaced providing a repair or replacement material having a sulfur content, which sulfur content is less than 10 ppm, and applying the repair or replacement material to the site on the turbine engine component to effect the repair, the refurbishment, or the replacement.

1 . A method for repairing, refurbishing, or replacing a turbine engine component/sub-component comprising the steps of:
 providing a turbine engine component/sub-component having a site to be repaired;   providing a repair/refurbishment/replacement material having a sulfur content, which sulfur content is less than 10 ppm; and   applying the repair/refurbishment/replacement material to the site on the turbine engine component to the site on the turbine engine component to effect said repair/refurbishment/replacement.   
     
     
         2 . The method of  claim 1 , wherein said step of providing said repair/refurbishment/replacement material comprises providing a nickel based repair material having said sulfur content. 
     
     
         3 . The method of  claim 1 , wherein said step of providing said repair/refurbishment/replacement material comprises providing a cobalt based repair material having said sulfur content. 
     
     
         4 . The method of  claim 1 , wherein said step of providing said repair/refurbishment/replacement material comprises providing a repair/refurbishment/replacement material having said sulfur content below 7.0 ppm. 
     
     
         5 . The method of  claim 1 , wherein said step of providing said repair/refurbishment/replacement material comprises providing a repair/refurbishment/replacement material having said sulfur content below 1.0 ppm. 
     
     
         6 . The method of  claim 1 , wherein said step of providing said repair/refurbishment/replacement material comprises providing a repair/refurbishment/replacement material having said sulfur content in the range of from 0.5 ppm to 1.0 ppm. 
     
     
         7 . The method of  claim 1 , wherein said step of providing said repair/refurbishment/replacement_material comprises providing a repair/refurbishment/replacement_material having said sulfur content in the range of from 0.001 ppm to less than 10 ppm. 
     
     
         8 . The method of  claim 1 , wherein said applying step comprises applying said repair/refurbishment/replacement material using a technique selected from the group consisting of a welding technique, a brazing technique, a plasma powder deposition technique, a laser cladding technique, a powder bed produced component/sub-component, and a gas metal arc deposition technique. 
     
     
         9 . The method of  claim 1 , further comprising subjecting said turbine engine component/sub-component with said applied repair/refurbishment/replacement material to a heat treatment. 
     
     
         10 . A repair/refurbishment/replacement material comprising a base material selected from the group consisting of nickel and cobalt and having a sulfur content, said sulfur content being less than 10 ppm. 
     
     
         11 . The repair/refurbishment/replacement material according to  claim 10 , wherein said base material is present in an amount more than 50 wt %. 
     
     
         12 . The repair/refurbishment/replacement material according to  claim 10 , wherein said repair/refurbishment/replacement material comprises a nickel based alloy and said base material is nickel. 
     
     
         13 . The repair/refurbishment/replacement material according to  claim 10 , wherein said repair/refurbishment/replacement material comprises a cobalt based alloy and said base material is cobalt. 
     
     
         14 . The repair/refurbishment/replacement material of  claim 10 , wherein said repair/refurbishment/replacement material has said sulfur content below 7.0 ppm. 
     
     
         15 . The repair/refurbishment/replacement material of  claim 10 , wherein said repair/refurbishment/replacement material has said sulfur content below 1.0 ppm. 
     
     
         16 . The repair/refurbishment/replacement material of  claim 10 , wherein said repair/refurbishment/replacement material has said sulfur content in the range of from 0.5 ppm to 1.0 ppm. 
     
     
         17 . The repair/refurbishment/replacement material of  claim 10 , wherein said repair/refurbishment/replacement material has said sulfur content in the range of from 0.001 ppm to less than 10 ppm.