Jia-Ruey Duann

Title: Innovations of Jia-Ruey Duann

Introduction

Jia-Ruey Duann is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of ceramics and composite materials, holding a total of 3 patents. His work focuses on enhancing the properties of ceramic materials for industrial applications.

Latest Patents

One of his latest patents is a method for forming chromium carbide-based ceramics composite block gauges. This innovative composite ceramic block gauge is created from a tungsten carbide (WC) reinforced phase and a chromium carbide (Cr.sub.3 C.sub.2) matrix. The resulting block gauge exhibits excellent properties such as hardness, corrosion resistance, and high reflectivity. These block gauges made from Cr.sub.3 C.sub.2/WC composites can be calibrated using traditional optical interferometry techniques.

Another significant patent involves high-performance ceramic composites containing tungsten carbide. This composite features a chromium carbide matrix reinforced with tungsten carbide particles, where 5 to 35 vol% of tungsten carbide is uniformly dispersed in 65 to 95 vol% of the chromium carbide matrix. The particle diameters of tungsten carbide and chromium carbide are ideally between 0.1 to 10 μm, with average diameters of approximately 2.0 and 1.5 μm, respectively. The composite is prepared through a sintering process that applies heat and pressure to a green compact without using a metallic sintering aid. This method ensures that the tungsten carbide reinforced chromium carbide composite retains the advantageous characteristics of chromium carbide, such as excellent strength, hardness, and anti-corrosion properties, making it suitable for critical industrial applications.

Career Highlights

Jia-Ruey Duann is affiliated with the Industrial Technology Research Institute, where he continues to innovate and develop advanced materials. His work has significantly impacted the field of ceramics, particularly in enhancing the performance and reliability of composite materials.

Collaborations

He has collaborated with notable coworkers, including Cheng-Tsu Fu and Ai-Kang Li, contributing to various projects and advancements in their field.

Conclusion

Jia-Ruey Duann's contributions to the field of ceramics and composite materials are noteworthy. His innovative patents reflect his commitment to enhancing material properties for industrial applications. His work continues to influence the development of high-performance materials in the industry.