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SPECIALTY COIL COATER

Physical Vapor Deposition (PVD) technology SPECIALTY COIL COATER

ARCEO Engineering is a specialty coil coater, offering high added value surface treatment solutions. Our aim is to offer our customers specialized solutions in the domains of metallic surface embellishment, and handling protection and process optimization.

TABLE OF CONTENTS

In this brochure you will find:

1. Introduction to PVD technology

2. How does Physical Vapor Deposition work?

3. How is sputtering obtained?

4. What does ARCEO engineering propose?

5. ARCEO Engineering’s PVD-produced coatings

6. ARCEO Engineering PVD line

7. Quality control

1 Introduction Physical vapor deposition (PVD in short) is a coating technique belonging to the branch of vacuum coating technologies. Using PVD it is possible to cover a surface with a mate- rial like aluminum, a metallic oxide such as tita- nium oxide (TiOx) or a ceramic material as tita- nium nitride (TiNx). This would not be feasible to achieve by roll coating due to material ther- modynamic instability.

Figure 1. The PVD process allows metallic atoms to be deposited on the substrate surfa- Figure 1 ce in a very thin and pure .

How does Physical Vapor the substrate where they eventually settle for- ming the coating. Deposition work? What does ARCEO Engineering We vaporize the solid material from a me- tallic target to deposit it on a substrate in a propose? vacuum environment (vacuum is used to reduce gas particle density, limit gaseous ARCEO Engineering enhances the basic dc contamination and control gas flow). sputtering system by using a Magnetron Sput- tering one. The advantage of this system is Material vaporization may be obtained ei- that electrons are confined to an area near the ther by thermal heating or by sputtering target instead of being attracted to the subs- (material removal by ion or atom bombard- trate, in other words, electrons are not able to ment). Sputtering is much more energy effi- damage the being created. It also al- cient as compared to thermal lows more stable plasma with a higher ion den- and it is a versatile technique on the point sity increasing the probability of further argon of material deposition. Sputtering can be atom ionization producing a higher bombard- used to deposit from pure metals to alloys. ment rate into the target, which is translated In addition, sputter atoms have a higher ki- into a higher material removal rate and there- netic energy than evaporated atoms, and fore, a higher deposition rate of the coating on this is the reason why coatings produced the substrate. by this process show an improved perfor- In this sense, a better coating quality is achie- mance, that is, better to the subs- ved because impurities “do not have time trate, dense crystallographic structures of enough” to be deposited on the substrate sur- excellent quality and uniformity. face.

How is sputtering obtained? PVD is useful to deposit pure metals, as it is the for aluminum deposition for heat In the sputtering process argon atoms are shield applications. In addition, by injecting injected in the vacuum chamber at pressu- small amounts of oxygen or nitrogen in the va- res typically from 1 to 10mTorr; a dc volta- cuum chamber (reactive sputtering process), ge is produced between the cathode compound materials such as titanium oxide (substrate) to the anode (the coating mate- (TiOx) or (TiNx) can be deposi- rial) that ionizes argon atoms creating a ted. plasma (a hot gas phase composed by ions and electrons). Due to the dc voltage , the These two compounds have very interesting indus- argon ions are accelerated to the anode trial applications like decoration in indoor/outdoor where they collide removing atoms from architecture for titanium nitride (TiNx) and self- the coating material. These atoms travel to cleaning for titanium oxide (TiOx).

2 These two compounds have very interesting Industry to provide heat shield properties to industrial applications like decoration in in- the exhaust systems. It is also applied in the in- door/outdoor architecture for titanium nitride dustrial food equipment as a heat shield mate- (TiNx) and self-cleaning for titanium oxide rial in ovens and heating devices. (TiOx).  ArenClean.

Figure 2. Magnetron Sputtering pro- Nanometric titanium oxide (TiOx) coating on pre cess. Argon atoms are ionized in a strong -painted flat carbon steel, pre-painted lami- magnetic field. They bombard the target cau- nated zinc and pre-painted aluminum for self- sing the target atoms to be ejected toward cleaning applications . the substrate and be deposited on its surface. The strong magnetic field near the target ArenClean is applied in the outdoor architec- causes electrons from plasma to travel in a ture preserving the original aspect of façades spiral trajectory along magnetic flux lines for a longer time. ArenClean confers two preventing thin film damage. functionalites:

 Dust barrier: The thin TiOx layer avoids dust to penetrate in the porosity of the top coat.

 Hydrophilic function: Activated by Figure 2 UV’s, the TiOx layer allows water to evenly spread onto the façade, ensuring an easy re- moval of the fouling, without stains.

ARCEO Engineering PVD line ARCEO Engineering’s PVD line has 3 stages: vacuum, surface pretreatment, surface treat- ment and atmospheric pressure conditioning.

In order to achieve the atom transfer from the target to the strip of the coil a vacuum is cre- ated followed by argon injection. The argon gas is ionized and the ions are attracted by the target, hitting it and liberating target atoms. These atoms will then fill the vacuum chamber and deposit on the strip.

ARCEO Engineering’s Prior to the PVD chamber, the substrate is pre- PVD-produced coil coatings treated by etching, which is a process similar to sputtering used to remove surface contami- ARCEO Engineering is proud to offer 4 PVD- nants. produced coil coatings: ARCEO Engineering PVD section has 3 cham- bers, each of them allowing a deposit of max.  ShieldArceo. 30nm. Coils able to be treated in our PVD facili- Aluminum thin layer on aluminum-silicon ties are: coated steel for increased thermal efficiency and for heat shield applications .  Substrate width: (700-1500)mm It provides high IR reflectivity, even in the  Substrate thickness: (0.15-1.2)mm visible range, good corrosion resistance and good formability. Substrate material can be flat carbon steel, laminated zinc, stainless steel, aluminum. ShieldArceo is applied in the automotive

3 Our target are cylinders, which allow better Packaging efficiency since they turn on themselves and ARCEO Engineering offers different kinds of are able to cool off when not submitted to the coil packaging that are upon request. The magnetic field; also the is evenly spread standard packaging consists of a basic “nude” on the cylinder. packaging: Quality control (Point Labo) ARCEO Engineering offers different kinds of coil packaging that are upon request. The At the end of the PVD line, the coated sub- standard packaging consists of a basic “nude” strate is tested in the quality lab. All coated packaging: substrates are submitted to general visual in- spection and according to the kind of coating that was deposited, specific tests are per-  2 circumferential + formed in order to determine and control protection of the strapping welding. coating quality:  3 radial straps at 2,5 and 10 o’clock with

plastic protection angles.  ShieldArceo This coating is tested for the total IR reflectiv- With our technical expert team, we are capa- ity, energy efficiency, temperature resistance, ble of offering a personalized, quick and effi- corrosion resistance (), form- cient service. ability, food contact, and some chemical agents such as detergents resistance and eva- Do not hesitate to contact us if you are looking nescent oil. for high technological effective surface treat-

ment solutions. It will be a pleasure to assist  ArenClean you! This coating is mainly tested for its contact an- gle. The cleaning capacity of a surface de- pends mainly on the contact angle of the water droplet on the surface. Figure 3. ARCEO Engineering’s PVD line

Figure 3

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England Convenient R & D France logistics approach  The Netherlands location  Germany

ARCEO Engineering Specialty coil coater

 Enhancing infrared reflectivity PVD Roll Coating Enduring a clean Business Business aspect of metallic substrates

 Embellishing surface metallic substrates

V i s i t o r s L o g i s t i c s Chaussee de ramioul 52 Rue Sompré 1 B-4400 Ivoz-Ramet B-4400 Ivoz-Ramet Belgium Belgium

w w w . a r c e o - e n g .c o m sales@arceo - e n g . c o m +32(0)4 236 96 32