High Temperature Stability of Carbon/Carbon Composites

Improving Thermal Stability of Starch in Formate Fluids for Drilling High Temperature Shales

Starch is one of the most widely used biopolymers in water based drilling fluids to control fluid loss. The thermal stability of starch in common drilling fluids is low (93 °C). In this study, the thermal stability of starch has been evaluated in sodium/potassium formate and potassium chloride fluids. Samples of mud were prepared by formate salts (sodium and potassium) and potassium chloride wi...

Pcm-graphite Composites for High Temperature Thermal Energy Storage

Al2O3/ZrO2/Y3Al5O12 Composites: A High-Temperature Mechanical Characterization

An Al2O3/5 vol%·ZrO2/5 vol%·Y3Al5O12 (YAG) tri-phase composite was manufactured by surface modification of an alumina powder with inorganic precursors of the second phases. The bulk materials were produced by die-pressing and pressureless sintering at 1500 °C, obtaining fully dense, homogenous samples, with ultra-fine ZrO2 and YAG grains dispersed in a sub-micronic alumina matrix. The high temp...

Connecting high-temperature and low-temperature protein stability and aggregation

Protein aggregation is a long-standing problem for preservation of proteins in both laboratory settings and for commercial biotechnology products. It is well established that heating (cooling) can accelerate (slow) aggregation by populating (depopulating) unfolded or partially unfolded monomer states that are key intermediates in aggregation processes. However, there is a long-standing question...

Reduction of Carbon-Carbon Composites using Bio Antioxidant

In past decades, carbon–carbon composites composed of multidirectional carbon fiber reinforcement embedded in carbon matrix have been significantly explored due to its excellent mechanical and physical properties. Carbon-carbon composites have light weight, high strength at high temperature in non-oxidizing atmospheres, low coefficient of thermal expansion, high electrical conductivity and high...