Paul R Johnson

Title: Paul R Johnson: Innovator in Superalloy Technology

Introduction

Paul R Johnson is a notable inventor based in Whitehall, MI (US). He has made significant contributions to the field of materials science, particularly in the development of advanced superalloys. With a total of 3 patents to his name, Johnson's work has had a lasting impact on the industry.

Latest Patents

One of Johnson's latest patents is for an oxidation-resistant superalloy casting. This innovation improves the oxidation resistance of superalloy castings, such as equiaxed, directionally solidified, or single crystal castings. The process involves melting, pouring, or casting the alloy in a way that allows it to react with a magnesium or calcium-bearing ceramic material. This controlled reaction introduces magnesium or calcium into the alloy, enhancing its properties.

Another significant patent is for a ceramic shell mold for investment casting and the method of making it. This ceramic shell mold features a facecoat layer made from a first ceramic material, with a plurality of alternating layers formed on top. These layers consist of a second ceramic material and a third ceramic material, each with different thermophysical properties. The resulting ceramic shell mold exhibits greater high-temperature creep resistance compared to molds made from only one of the materials.

Career Highlights

Throughout his career, Paul R Johnson has worked with prominent companies in the aerospace and materials sectors. Notably, he has been associated with Howmet Corporation and Howmet Turbine Components Corporation. His work in these organizations has allowed him to apply his innovative ideas in practical applications.

Collaborations

Johnson has collaborated with several talented individuals in his field, including Eliot S Lassow and Sidney R Whitaker. These partnerships have contributed to the advancement of technology in superalloy development and casting processes.

Conclusion

Paul R Johnson's contributions to the field of superalloys and casting technology are noteworthy. His innovative patents and collaborations have paved the way for advancements in materials science. His work continues to influence the industry and inspire future innovations.