Processing Mapping and Comparison of High Velocity Oxy-Fuel (HVOF) Produced Damage Tolerant Coatings: Processing to Properties to Performance

The demand for damage tolerant coatings in engineered systems has provided a platform for a wide variety of coating materials and processes to emerge in industrial uses. One of the most prominent to emerge are High Velocity Oxy-Fuel (HVOF) sprayed Cer-Met Coatings, finding applications in aerospace, earthmoving, and others. The complexity involved with the HVOF coating process and application specific qualification testing leads to a lengthy process for optimizing a particular coating, with little insight into the properties link between the process and performance This talk uses the methodology of Process Mapping to map the links between processing, properties, and performance of HOVF deposited Damage Tolerant Coatings. Processing measurement tools, such as in-flight particle sensors and In-Situ stress measurements, are used to describe the measured properties and performance behavior of CerMet coatings in order to establish a mechanistic link between coating processing and performance aspects, including wear, corrosion, and fatigue