... exposed in geothermal fluids derived from the Ohaaki-Broadlands geothermal resource in New Zealand are reported. Coupon materials of titanium (and two titanium alloys), a zirconium alloy, a cobalt alloy, tantalum and molybdenum were exposed for periods of up to 1 year in two-phase fluid, separated brine...

...Abstract This paper describes the results of a laboratory study evaluating corrosion resistance of a tantalum surface alloy on stainless steel and multiple corrosion resistant alloys in a laboratory simulation of two deep well acidizing environments. Acidizing is a common practice in oil...

... and the challenges faced in the sulfur-iodine thermochemical process and how tantalum surface alloys were used to meet these corrosive, mechanical and economic challenges where virtually all other traditional corrosion resistant materials like nickel, titanium zirconium and tantalum metal alloys have failed. PROBLEM...

...Alloy T21 / MAT21 (UNS N06210) ^{1 - 3} , which comprises 19% chromium, 19% molybdenum, 1.8% tantalum and the remaining composition of nickel, shows excellent localized corrosion resistance ⁴ . Further alloy T21 is characterized by the small amount of tantalum, which enhances...

... supercritical water have been evaluated on Ni-Cr experimental alloys with small quantity of various third elements before and after aging heat treatments at 400 °C – 650 °C for up to 3000 hours. It was found that tantalum addition to Ni-Cr alloy remarkably mitigates aging degradation of the alloy both...

...Abstract Several new developments in explosion clad technology of reactive and refractory metals offer significant cost reduction for highly corrosion-resistant chemical processing industry (CPI) equipment . These developments include: 1) technology for manufacturing large tantalum clad plates...

...titanium zirconium tantalum failures nitric acid NOx sulfuric acid INTRODUCTION Reactive metals have been used successfully in the Chemical Process Industry for many years. They can be used in a wide variety of chemical processes, both oxidizing and reducing in nature. However...

...FUNDAMENTALS OF CORROSION This section is an overview of the corrosion properties of tantalum and how these properties compare to the properties of other corrosion resistant metals. The references ( 1 -10) can be used for more detailed and in-depth information. Corrosion Properties of Tantalum...