- Ph.D., Engineering, Montana State University, 2018
- B.S., Chemical and Biological Engineering, Montana State University, 2015
- Professional Engineer Chemical, California, #7006
- NACE - Certified Coating Inspector Level 1 Certification (CA)
- American Institute of Chemical Engineers
Dr. Tatar is a chemical engineer who specializes in failure analysis, corrosion, material selection, vapor species contamination, thin film oxidation, and high temperature oxidation. He has expertise with scanning electron microscopy (SEM), optical microscopy (OM), x-ray photoelectron spectroscopy (XPS), energy dispersive x-ray spectroscopy (EDS), and x-ray diffraction (XRD).
Dr. Tatar also has experience and knowledge of atmospheric corrosion, localized corrosion, dissimilar metal corrosion, solder joint reliability issues, and the determination of surface area in powders using BET gas adsorption testing.
Dr. Tatar has investigated failures in pipes, heat exchangers, consumer appliances, consumer electronics, semiconductor process equipment, and electrical connectors. The materials of construction in these investigations included ductile iron, copper, tinned copper, brasses, stainless steels, and galvanized steels. He has also performed metal leaching tests on wearable devices, comparative design analysis of consumer appliances, and qualification testing of consumer products.
Before his time at Exponent, Dr. Tatar acted as a teaching assistant and laboratory manager in the High Temperature Materials Laboratory at Montana State University. In this role he performed testing services for industrial partners in the automotive and silicon refining industries as well as fundamental research related to solid oxide fuel cell cathode poisoning. Dr. Tatar's research consisted of an investigation into the generation and reactive condensation of chromium vapor species from chromium sources using surface sensitive materials characterization techniques. He developed a mechanism to explain the process by which chromium vapor species deposit and speciate on ceramic surfaces.
Dr. Tatar also examined the high temperature (> 500 °C) corrosion of ferritic stainless steels and other alloys under a variety of gas atmospheres and contacting conditions. These gas atmospheres included mixtures of oxygen, nitrogen, and water vapor, with separate exposures consisting of chlorosilanes and hydrogen chloride.