Company Filing History:
Years Active: 1981-1998
Title: John K Willis: Innovator in Nickel Superalloy Technology
Introduction
John K Willis is a notable inventor based in Salem, NH (US), recognized for his contributions to the field of nickel superalloy technology. He holds a total of 3 patents, showcasing his innovative approach to enhancing the performance of superalloys in high-temperature environments.
Latest Patents
Willis's latest patents focus on diffusion coating processes that significantly improve the oxidation and corrosion resistance of nickel superalloy bodies. The first patent describes a method that involves applying a thin layer of a platinum-group metal to the superalloy surface. This layer is then integrated through heating, followed by packing the superalloy body into a container filled with a diffusion powder composition containing aluminum and chromium sources. The process is conducted in a hydrogen gas atmosphere at elevated temperatures, allowing for the co-deposition and diffusion of aluminum and chromium into the treated surface. The final step involves heating the superalloy body to the solvus temperature, resulting in a ductile surface with a microstructure that includes a normally brittle PtAl.sub.2, which is ductilized by the solutioning of beta chromium.
Career Highlights
Throughout his career, John K Willis has worked with prominent companies such as Walbar Metals, Inc. and Walbar Inc. His experience in these organizations has contributed to his expertise in the development of advanced materials and processes.
Collaborations
Willis has collaborated with various professionals in his field, including his coworker Bernard R Rose, to further enhance the innovation and application of his patented technologies.
Conclusion
John K Willis stands out as a significant figure in the realm of nickel superalloy technology, with his innovative patents paving the way for advancements in high-temperature applications. His work continues to influence the industry and inspire future innovations.