This product is made available by the electro-deposition of a corrosion-resistant, low-friction, wear-resistant layer bonded at the atomic level onto the surface of any standard pump barrel. This cobalt-based formula has been utilized extensively in the aerospace industry by its developer, Honeywell, and has been tested in similar applications within North America. The electro-depositional layer has great, comprehensive performance binding force, ductility, no microcracking, non-porous and suitability for complex workpiece surfaces.
| Traditional | Advantages | Disadvantages |
Hard chrome coating | 1.Low cost 2. Applied to internal and external surfaces | 1.Environmental issue 2. Poor corrosion resistance 3. General performance |
| Tungsten carbide coating | 1.High hardness 2. Good corrosion resistance 3. High wear resistance | 1.High cost 2. Low ductility 3.Difficult to apply to inner surface |
| Honeywell coating | 1.Coating thickness can be adjusted according to customer requirements 2. Minimum surface roughness: 0.1 µm Ra for OD, 0.4 µm Ra for ID 3. Applied base material (not limited): steel, stainless steel, nickel alloy, carbon steel, etc. 4. Deplating and repair work can be performed on existing barrels | |
| Item | Type | Shape | Honeywell Coating | Chrome | WC HVOF HVOF | Cl (PPM) |
| ASTM G65 | Wear | Flat test piece | 25mg/1000cycles | 60mg/1000revs | <20mg/1000revs | N/A |
| ASTM B117 | Corrosion | Flat test piece | >1000hr@250um | <1000hrs | >1000hr | 3000 |
| CASS | Corrosion | Flat test piece | >500hr@250um | 96hr@250μm | N/A | 3,000 |
| Immersion test | Corrosion | Flat test piece | >168hr | <168hr | >168hr | 2300-91000 |
| Hydrogen embrittlement | Process capability | Standard test bars | Passed 200hr | N/A | N/A | N/A |
| Impact corrosion | Other | Flat test piece | >48hr | <24hr | >24hr | 2300 |
