scholarly journals W + Cu and W + Ni Composites and FGMs Prepared by Plasma Transferred Arc Cladding

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 789
Author(s):  
Jiří Matějíček ◽  
Jakub Antoš ◽  
Pavel Rohan
Keyword(s):  
Gas Composition ◽  
Pulsed Plasma ◽  
Plasma Transferred Arc ◽  
Plasma Facing Components ◽  
Stress Relieving ◽  
Transferred Arc ◽  
Graded Layers ◽  
Arc Current ◽  
Structural Parts ◽  
As Stress

Tungsten-based materials are the most prospective candidates for plasma-facing components of future fusion devices, such as DEMO. W-based composites and graded layers can serve as stress-relieving interlayers for the joints between plasma-facing armor and the cooling or structural parts. Coating/cladding techniques offer the advantages of eliminating the joining step and the ability to coat large areas, even on nonplanar shapes. In this work, W + Cu and W + Ni composites were prepared by pulsed plasma transferred arc (PTA) cladding on several different substrates. Optimization of the process was carried out with respect to powder mixture composition and process parameters like arc current, plasma gas composition, and traverse velocity. Dense claddings of several millimeters thickness and various W content were achieved. Moreover, multilayers with W content gradually varying from 47 to 92% were formed. The structure, compositional profiles, and thermal properties of the claddings were characterized.

Microstructure and Wear Properties of Fe-Based Alloy Coating

2014 ◽  
Vol 997 ◽  
pp. 570-573
Author(s):  
Bo Chen ◽  
Yi Li ◽  
Cai Tang ◽  
Hui Ji Fan ◽  
Peng Xiao Zhu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Wear Resistance ◽  
Energy Dispersive Spectroscopy ◽  
Alloy Coating ◽  
Wear Properties ◽  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Arc Current ◽  
Scanning Electron

Fe-based alloy coatings were produced by the plasma transferred arc(PTA) at arc current values of 90A,100A,110A and 120A. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and optical microscopy (OM) were used to characterize the microstructure of the coatings. The wear resistances of the coatings were tested by impact and wear experiment. The results show that, the coating and substrate are metallurgy combination, and the coating modified at 110A shows that better wear resistance than others.

The mechanism of spraying of paraffin-based fuel by using of plasma transferred arc

2017 ◽  
Vol 23 (1) ◽  
pp. 30-35
Author(s):  
L.A. Bulavin ◽  
◽  
V.Ya. Chernyak ◽  
L.Yu. Vergun ◽  
Yu.F. Zabashta ◽  
...  
Keyword(s):  
Plasma Transferred Arc ◽  
Transferred Arc

Microstructure and Microhardness Characterization of Cr3C2-SiC Coatings Produced by the Plasma Transferred Arc Method

2012 ◽  
Vol 54 (11-12) ◽  
pp. 793-799 ◽  
Author(s):  
Serkan Islak ◽  
Özkan Eski ◽  
Soner Buytoz ◽  
Muzaffer Karagöz ◽  
Joseph Stokes
Keyword(s):  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Sic Coatings

COLMONOY No. 83 PTA

Alloy Digest ◽  
1995 ◽  
Vol 44 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Compressive Strength ◽  
Physical Properties ◽  
Tungsten Carbide ◽  
Tensile Properties ◽  
Powder Metal ◽  
Application Method ◽  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Nickel Base

Abstract COLMONOY No. 83 PTA is a nickel-base hard surfacing alloy containing tungsten carbide. The application method is plasma transferred arc and the application is designed to protect extrusion screws. This datasheet provides information on composition, physical properties, microstructure, hardness, tensile properties, and compressive strength. It also includes information on wear resistance as well as machining and powder metal forms. Filing Code: Ni-493. Producer or source: Wall Colmonoy Corporation.

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