Protection of graphite and graphite-containing materials from oxidation

Семченко, Г. Д.; Shuteeva, I. Yu.; Slepchenko, O. N.; Анголенко, Л. А.

doi:10.1007/s11148-006-0021-1

Cited by 15 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The medium DMF might be helpful in stabilizing the resultant gel by increasing the mechanical strength of the coated film [19]. The sol-gel layer might have also diffused through the pore of graphite to some depth enhancing the adhesive strength of coating layer [26].…”

Section: Sensor Developmentmentioning

confidence: 99%

Development of a Creatinine Sensor Based on a Molecularly Imprinted Polymer‐Modified Sol‐Gel Film on Graphite Electrode

2008

View full text Add to dashboard Cite

An electrochemical creatinine sensor based on a molecularly imprinted polymer (MIP)-modified sol-gel film on graphite electrode was developed. The surface coating of MIP over sol-gel was advantageous to obtain a porous film with outwardly exposed MIP cavities for unhindered selective rebinding of creatinine from aqueous and biological samples. A fast differential pulse, cathodic stripping voltammetric response of creatinine can be obtained after being preanodized the sensor in neutral medium containing appropriate amount of creatinine at þ 1.8 V versus SCE for 120 s. A linear response over creatinine concentration in the range of 1.23 to 100 mg mL À1 was exhibited with a detection limit of 0.37 mg mL À1 (S/N ¼ 3).

show abstract

Section: Sensor Developmentmentioning

confidence: 99%

Development of a Creatinine Sensor Based on a Molecularly Imprinted Polymer‐Modified Sol‐Gel Film on Graphite Electrode

2008

View full text Add to dashboard Cite

show abstract

“…This porous surface alone does not ideally protect the graphite from oxidation and can result in catastrophic failure in order to avoid this ideally multilayer coating is develop [12]. Thus a second denser layer of SiC is applied over the first one through slurry method.…”

Section: Introductionmentioning

confidence: 99%

“…Oxidation of graphite above a certain threshold temperature (which depends upon the grade of graphite, and it ranges between 800-1000 ˚K) results in mass loss and microstructural deterioration (crack development, enlargement of pores, and de-bonding between material components). Both mass loss and microstructure deterioration reduces the mechanical strength and toughness of the material [12][13].…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of Silicon Carbide Coating on Graphite Substrate

Mohammad

Sharif

Ahmed

et al. 2021

Preprint

View full text Add to dashboard Cite

The development of materials with unique and improved properties using low cost processes is essential to increase performance and reduce cost of the solid rocket motors. Specifically advancements are needed for boost phase nozzle. As these motors operate at very high pressure and temperatures, the nozzle must survive high thermal stresses with minimal erosion to maintain performance. Currently three material choices are being exploited; which are refractory metals, graphite and carbon-carbon composites. Of these three materials graphite is the most attractive choice because of its low cost, light weight, and easy forming. However graphite is prone to erosion, both chemical and mechanical, which may affect the ballistic conditions and mechanical properties of the nozzle. To minimize this erosion Pyrolytic Graphite (PG) coating inside the nozzle is used. However PG coating is prone to cracking and spallation along with very cumbersome deposition process. Another possible methodology to avoid this erosion is to convert the inside surface of the rocket nozzle to Silicon Carbide (SiC), which is very erosion resistant and have much better thermal stability compared to graphite and even PG. Due to its functionally gradient nature such a layer will be very adherent and resistant to spallation. Despite its very good adhesion due to its functionally gradient nature, this layer due to its porous nature exhibit poor oxidation performance compared to a dense SiC layer. The current research is focused on synthesizing, characterizing and oxidation testing of a bi-layer; a functionally gradient inner layer and dense outer layer, SiC coating on graphite.

show abstract

“…The resulting rise in the porosity would accelerate the oxidation of graphite due to the increased contact with oxygen. In addition, the removal of CO and CO 2 from the surface could further promote the oxidation reaction and the burnout of graphite [19]. Given those detrimental factors, graphite has been mainly employed as a lubricant for medium-temperature metal forming processes like casting [20], forging [21,22], and extrusion [23], etc.…”

Section: Introductionmentioning

confidence: 99%

Graphite-based solid lubricant for high-temperature lubrication

2020

View full text Add to dashboard Cite

High-temperature solid lubricants play a significant role in the hot metal forming process. However, preparing high-temperature solid lubricant is formidably challenging due to the stern working conditions. Here we successfully develop a new type of eco-friendly high-temperature graphite-based solid lubricant by using amorphous silica dioxide, aluminum dihydrogen phosphate, and solid lubricant graphite. The solid lubricating coating exhibits excellent tribological properties with a very low friction coefficient and good wear protection for workpiece at high temperature under the air atmosphere. An array of analytical techniques reveals the existence of solid lubricant graphite in the lubricating coating after the high-temperature friction test. A synergistic effect between the protective surface film and the solid lubricant graphite is proposed to account for such superior lubricating performance. This work highlights the synergistic effect between the protection layer and the lubricant graphite and further provides the insight in designing the high-temperature solid lubricant.

show abstract

Protection of graphite and graphite-containing materials from oxidation

Cited by 15 publications

References 2 publications

Development of a Creatinine Sensor Based on a Molecularly Imprinted Polymer‐Modified Sol‐Gel Film on Graphite Electrode

Development of a Creatinine Sensor Based on a Molecularly Imprinted Polymer‐Modified Sol‐Gel Film on Graphite Electrode

Development and characterization of Silicon Carbide Coating on Graphite Substrate

Graphite-based solid lubricant for high-temperature lubrication

Contact Info

Product

Resources

About