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SPS and SPPS Coating Development

A new breed of nano-structured coatings are being developed around the suspension plasma spray (SPS) and solution precursor plasma spray (SPPS) processes. SPS and SPPS require more energy per deposited mass than conventional powder spraying because a liquid carrier must be vaporized before the plasma can interact with the coating material.

The 100HE, currently used in multiple SPS and SPPS production systems, is well equipped to meet this increased energy requirement through the use of high enthalpy gas mixtures (Ar-N2-H2 or Ar-N2-He) and operating powers up to 105 kW.

The small particle/droplet sizes within SPS and SPPS increase the sensitivity of the feedstock materials, and thus the microstructure, to changes in the plasma flow. The ternary gas mixtures and high arc voltages (>200 V) of the 100HE generate an extremely stable plasma, allowing for consistent feedstock injection and heating.

Progressive has also developed a closed-loop feed system, called the LiquifeederHE, which provides accurate and consistent flows for SPS and SPPS materials in the 10-100 ml/minute range.

It is the nature of suspensions to settle out and produce clogs within the feed system. As a result, the LiquifeederHE includes several design features to counteract these problems during operation. An impeller within the reservoir ensures the powder particles remain suspended. Settling between the reservoir and gun is prevented by the correct choice and routing of feed lines. Inline filters are used to trap larger particle agglomerates or foreign bodies, stopping these objects from clogging an injection orifice.

Suspensions or solution precursors can also produce clogs if these materials remain stagnate within the feed system between uses. To solve this issue, the LiquifeederHE includes the ability to constantly circulate the feedstock during delays between spraying, which also enables quick transitions between torch preheating and coating application. When not in use, proper cleaning of the feed system is essential in preventing clogs within a suspension/solution feeder. The LiquifeederHE is designed to facilitate cleaning through integrated flush and waste capture features.

The performance characteristics of the 100HE and LiquifeederHE have proven to yield a very effective and versatile SPS/SPPS platform that is capable of spraying coatings from 25 wt% solid suspensions and solutions (dissolved solid content) at flow rates of up to 90 ml/min with deposition efficiencies ranging from 50 – 80%.


PTI Thermal spraying systems

 
100HE™ Plasma Spray System
100HE™ Extension Plasma Torch for Inner Diameter Spraying
CITS Pro™ Computer Integrated Thermal Spray systems
MPC 1100 Monitored Plasma Gas Control System
LiquifeederHE™ SPS/SPPS Feed System
SPS and SPPS Coating Development
Hydraulic Component HVOF Coating System
Crankshaft HVOF Coating System
Automatic Piston Ring Plasma Coating System
Multi-Process Thermal Spray System for Airline Overhaul
Industrial Valve Plasma Coating System using 100HE™ Plasma torch
Aircraft Landing Gear HVOF Coating System
Closed Loop Plasma Spray System with Dual Fixture-Doors


Progressive Surface Thermal spraying videos

 
Large Shaft Thermal Spray System
Impressive Coordinated Motion ABB and Tilt Spindle
HVOF Coating of Hydraulic Components up to 12 Feet Long
Heavy Equipment Overhaul Crankshaft Coating by HVOF
Grit Blasting & Thermal Spray Coating Bushings
HVOF Coating of Landing Gears
100HE™ plasma thermal spray torch operating in high velocity mode
 

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PTI Thermal spraying downloads

 
Thermal Conductivity Analysis and Lifetime Testing of Suspension Plasma-Sprayed Thermal Barrier Coatings
(1.25M) Adobe PDF
100HE Suspension Plasma Spray (SPS) and Solution Precursor Plasma Spray (SPPS) application development
(296K) Adobe PDF
New battery manufacturing processes at UofM Dearborn reduce time, expense using 100HE plasma torch
(155.4K) Adobe PDF
Emerging Applications at University of Michigan - 100HE Axial Feed Liquid Precursor Plasma Spray
(308.7K) Adobe PDF
The 100HE Plasma Torch ‐ a technical solution to thermal barrier coatings
(387.1K) Adobe PDF
100HE™ Abradable Coatings for Compressor Cases
(748.8K) Adobe PDF
100HE™ Plasma Torch Stability
(267.1K) Adobe PDF
Unique Thermal Spraying System at KLM
(471.9K) Adobe PDF
Abradables—100HE Coating Data (English units)
(469.7K) Adobe PDF
Abradables—100HE Coating Data (Metric units)
(469.7K) Adobe PDF
Alloys & Pure Metals—100HE Coating Data (English units)
(480.1K) Adobe PDF
Alloys & Pure Metals—100HE Coating Data (Metric units)
(470.3K) Adobe PDF
Carbides—100HE Coating Data (English units)
(470.6K) Adobe PDF
Carbides—100HE Coating Data (Metric units)
(471.1K) Adobe PDF
Ceramics—100HE Coating Data (English units)
(477.9K) Adobe PDF
Ceramics—100HE Coating Data (Metric units)
(477.7K) Adobe PDF

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PTI Thermal spraying news

 
Progressive Surface® introduces CITS Pro™ thermal spray system
New Navy Thermal Spray System has “Tons” of Features …
Progressive Surface highlighted in GE Report debunking myths about outsourcing
Progressive Surface's 100HE and LiquiFeederHE highlighted at ITSC 2012 in Houston
Progressive Surface highlighted in GE’s technology investment in Michigan
Progressive Surface to exhibit at ITSC 2011 in Hamburg Germany
Kent VanEvery Joins the Progressive Surface Team
New battery manufacturing processes at UofM Dearborn reduce time and expense using 100HE plasma torch
Larry Pollard announces his retirement from Progressive Surface
Progressive Technologies Launches Next Generation 100HE Plasma Spray Torch
Eutectic of Japan, Ltd. to Market 100HE
Air Products Teams Up with Progressive Technologies to Demonstrate the Benefits of Its New Thermal Spray Cooling System Using Cryogenic Nitrogen
100HE Produces Low-Oxide MCrAlY Coatings
University of Michigan - Dearborn takes delivery of 100HE Plasma Spray System
100HE™ Celebrates 5th Anniversary
100HE Plasma System Featured in Air Products New Thermal Spray Brochure
KLM Royal Dutch Airlines Implements Unique Thermal Spray System
100HE™ Plasma Replaces HVOF Process

Thermal spraying, SPS and SPPS Coating Development

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Thermal spraying, SPS and SPPS Coating Development

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Thermal spraying, SPS and SPPS Coating Development

  enlarge photo

Thermal spraying, SPS and SPPS Coating Development

  enlarge photo

 

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