... inspection campaign was executed in a West European refinery on circuits potentially subjected to high temperature low silicon carbon steel sulfidation (<0.1wt.%). This effort came on the top of the existing refinery sulfidation inspection plan for carbon steel piping. Ultrasonic testing (UT) measurements...

...This study will present the chemical vapor deposition coating process, the composition of one silicon-based nanocoating, Dursan^{® †} , laboratory corrosion testing results, and other properties of the surface treatments. COATING CHARACTERIZATION The term “nanocoating” is used here...

... of this research project was to characterize the electrochemical behavior of stainless steels with different amount of chromium, nickel and silicon. The amount of Si in the alloys were varied from ~1% to 5%, the amount of Cr varied from 12% to 19% and the amount of Ni from 8 to 15%. The electrochemical studies...

... (hardness) of the materials. Irradiation may also alter the local chemistry of the austenitic alloys, for example causing chromium depletion and silicon enrichment at the grain boundaries. The objective of the present work was to perform laboratory tests in order to better understand the role of Si...

... caused by HCl and salt environments. Initial discussion will be on the process of applying CVD coatings. The CVD coatings discussed in this presentation are amorphous silicon coatings developed specifically for stainless steel. Examples will be shown of application of CVD coatings to a wide variety...

...Abstract Potassium formate aqueous solutions have been considered as heat transfer fluids or coolants for electronics cooling applications. Electrochemical corrosion tests were performed on high purity silicon specimens in 42% potassium formate solutions between 298 K and 348 K, with a magnetic...

.... Corrosion tests using laser surface melted alloy and coupons simulating a galvanic couple support the identified mechanism. silicon austenitic stainless steel intergranular corrosion general corrosion nitric acid solution dichromate segregation galvanic corrosion laser surface melting...

... attack from low melting point alkali and heavy metal sulfides and halides. Certain key elements, namely aluminum, chromium, and silicon, have the ability to effectively resist such corrosion if present in sufficient quantities in the base alloy. These alloys tend to be very costly and/or have unsuitable...

... in air at 600 °C by forming an external protective layer of α-Al₂O₃ instead of Fe₂O₃. pack cementation aluminizing aluminum silicon coatings INTRODUCTION EXPERIMENTAL PROCEDURE PCP has been extensively used for diffusing single elements, like Al or Cr...

...Abstract Internal oxidation pretreatments of Co-15wt%Cr and Co-15wt%Cr-1wt%Ti were carried out using a Rhines pack in quartz, in mullite and in alumina. A dispersion of titanium oxide particles formed in the Ti-containing alloy as a result of the internal oxidation. However, silicon also diffused...

...-oxidation high temperature corrosion chromium nickel silicon nitrogen rare earth metals The austenitic stainless steels and N06601 were nitrided in an ammonia vapor environment at 1100°C (2010°F) and 1200°C (2190°F). The rate of nitridation was estimated by measuring the weight change per unit surface...

... and mechanisms of E-C of plain carbon and Cr steels have been investigated under both laboratory and in-service exposure conditions. ^{1 - 9} . In previous work ^{10 - 13} it was reported that the presence of 1.0 wt. % additional silicon in low chromium content steels whose normal silicon...

...STRUCTURE Abstract The combined effect of rare earth metals (REM), silicon and nitrogen on high temperature properties of austenitic stainless steels has been studied in three steels with increasing alloy content, S30415, S30815, and Avesta 353 MA™. These three austenitic stainless steels show...

.... In previous work ^{2 , 3} it was reported that some low chromium content steels which contained 1 wt.% additional silicon had markedly lower metal wastage than regular silicon content steels with the same or even higher chromium contents. Thus, the use of low chromium steel containing additional...

... corrosion calcium silicon sulfur molybdenum INTRODUCTION Stainless steels used in construction of paper machine headboxes must be highly resistant to pitting corrosion. The headbox manufacturer goes to considerable expense to provide a smooth surface, often including electropolishing, to insure...