美国进口TAFA镍基电弧喷涂丝TAFALOY 45CT丝材

　　山东济南骏焊销售美国进口TAFA镍基电弧喷涂丝

　　A high chromium content nickel alloy, Tafaloy 45CT, was developed to combat corrosion in high temperature sulfurous environments. The alloy is applied by arc thermal spraying at thicknesses of 15-20 x 10{sup -3} in (381-508 {mu}m) onto surfaces such as water wall tubes in black liquor recovery boilers. The coating has a bond strength of 6500 lbf in{sup -2} (44.82 MPa) and is well matched to the thermal expansion characteristics of steels used for boiler tube construction. Analysis of the coating indicates the presence of two solid solutions of chromium in nickel and two chromium oxides. The major component of the bbbbllic phases is the high chromium (44%) bulk material. The other components are a small portion of the coating. Coatings in service for 18 months show surface sulfur concentrations amounting to only 1%. The sulfur is effectively blocked from more penetration by combining with the chromium and the bbbbation of a self healing chromium oxide film on the coating's surface and within the pores with access to the atmosphere. The coating remains well bonded and protective. Coatings have been in service for over four years without failing. (orig.).

　　Authors:Zanchuk, W[1]Hide Author Affiliations

　　TAFA, Inc., Concord, NH (USA)

　　Publication Date:Dec 01, 1989

　　Product Type:Conference

　　Report Number:CONF-890468-

　　Reference Number:CHF-90-0F0078; EDB-90-060512

　　Resource Relation:Journal Name: Surface and Coatings Technology; (Switzerland); Journal Volume: 39/40:1-3,pt.1; Conference: 16. international conference on bbbbllurgical coatings and equipment exhibit, San Diego, CA (USA), 17-21 Apr 1989

　　Subject:36 MATERIALS SCIENCE; CHROMIUM ALLOYS; CORROSION PROTECTION; PROTECTIVE COATINGS; NICKEL BASE ALLOYS; TITANIUM ADDITIONS; ADHESION; BOILERS; CHEMICAL COMbbbbbbbb; CHROMIUM; CHROMIUM OXIDES; HIGH TEMPERATURE; IN-SERVICE INSPECTION; MICROSTRUCTURE; NICKEL ALLOYS; PLASMA ARC SPRAYING; SOLID SOLUTIONS; SPRAYED COATINGS; SURFACE COATING; THERMAL EXPANSION; TUBES; WATER; X-RAY DIFFRbbbbbb; X-RAY EMISSION ANALYSIS; ALLOYS; CHALCOGENIDES; CHEMICAL ANALYSIS; CHROMIUM COMPOUNDS; COATINGS; COHERENT SCATTERING; CRYSTAL STRUCTURE; DEbbbbbbbb; DIFFRbbbbbb; DISPERSIONS; ELEMENTS; EXPANSION; HYDROGEN COMPOUNDS; INSPECTION; bbbbLS; MIXTURES; NONDESTRUCTIVE ANALYSIS; OXIDES; OXYGEN COMPOUNDS; SCATTERING; SOLUTIONS; SPRAY COATING; TITANIUM ALLOYS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 360105* - bbbbls & Alloys- Corrosion & Erosion; 360101 - bbbbls & Alloys- Preparation & Fabrication

　　OSTI ID:7198597

　　Country of Origin:Switzerland

　　Language:English

　　Other Identifying Numbers:Journal ID: ISSN 0257-8972; CODEN: SCTEE

　　bbbbbbting Site:HEDB

　　Size:Pages: 65-69

　　Announcement Date:May 01, 1990