Diamond MT is a class 3 operating, fully functional coating operation with over 25 years of field experience. Our areas of expertise are within the military, commercial, bio-medical, and aerospace technology fields.
Rapid Turnaround
We are committed to serving the industry with rapid turn times for parylene, (normally 10 business days) with expedited service in as little as 2-5 business days depending upon the complexity and quantity. For liquid coatings, our normal turn time is five business days; again with expedite service in as little as 2-3 business day turns. » read more
Quality Assured
Diamond MT's quality manual ensures every employee is focused on continuous improvement and service excellence. Our ESD safe facilities stretch over 12,000 square feet dedicated to your conformal coating requirements. We are continually researching and updating our equipment to make sure we are providing the best ESD protection available. » read more
Why Use Parylene
- Parylene is unique in being created directly on the surface at room temperature.
- There is no liquid phase involved. Coatings are truly conformal, of uniform controllable thickness, and are completely pinhole-free at thicknesses greater than 0.5µ.
- Parylene coating completely penetrates spaces as narrow 0.01mm
- No initiators or catalysts are involved in the polymerization so the coating is very pure and free from trace ionic impurities.
- Room temperature formation means the coatings are effectively stress-free.
- Parylene is chemically and biologically inert and stable and make excellent barrier material.
- Parylene is unaffected by solvents, have low bulk permeability and are hydrophobic. Coatings easily pass a 100hr salt-spray test.
- Parylene has excellent electrical properties: low dielectric constant and loss with good high-frequency properties; good dielectric strength; and high bulk and surface resistance.
- Parylene has good thermal endurance: Parylene C performs in air without significant loss of physical properties for 10 years at 80°C and in the absence of oxygen to temperatures in excess of 200°C.
- Parylene is transparent and can be used to coat optical elements.
- FDA approval of parylene-coated devices is well-documented. The coatings comply with USP Class VI Plastics requirements and are MIL-I-46058C / IPC-CC-830B listed.
- Parylene coatings are completely conformal, have a uniform thickness and are pinhole free. This is achieved by a unique vapor deposition polymerization process in which the coating is formed from a gaseous monomer without and intermediate liquid stage. As a result, component configurations with sharp edges, points, flat surfaces, crevices or exposed internal surfaces are coated uniformly without voids.
- Parylene coating provides an excellent barrier that exhibits a very low permeability to moisture and gases.
- Parylene coating has excellent mechanical properties, including high tensile strength.
- Parylene is stable over a very wide temperature range (-200 'C to +200 'C), allowing the chamber items coated in Parylene to be put in an autoclave.
Parylene Adhesion to Stainless Steel
Any substrate that is vacuum-stable can be coated and the Parylene coating adheres strongly to all materials, even stainless steel, provided the appropriate adhesion-promotion techniques are used.
Parylene coatings perform well as dry lubricants: static and dynamic friction coefficients are equal and comparable to fluoropolymers with the advantage that they also have good wear and abrasion resistance.