... were investigated. Pipe spools made from 22Cr duplex stainless steel, 25Cr duplex stainless steel and titanium Gr. 2 were welded using argon purging gas with mixed-in oxygen at various concentrations to simulate insufficient purging. The mechanical testing included tensile testing, impact testing...

... composition, which was then utilized for the manufacture of extruded pipe components. The extruded pipe product was produced on a 30,000 MT press. The dimensions were 9.8” diameter pipe with a 0.65” wall x 36 feet. A typical titanium pipe extrusion off this press is shown in Fig. 2 which is similar...

...anodization efficiency oxygen evolution surface treatment titanium INTRODUCTION Titanium and its alloys are worldwide appreciated for their superior corrosion resistance. This resistance is due to a thin (1.5 nm - 10 nm) ¹ but compact and chemically stable oxide layer...

...Abstract Susceptibility of Grades 23 and 29 titanium Tapered Stress Joint (TSJ) forgings to gas phase methanolic Stress Corrosion Cracking (SCC) was measured in deaerated, dry 0-0.5 wt.% and saturated methanol-containing methane gas environments at 25°C in a two phase laboratory program. Phase 1...

...Abstract Increasing interest in utilizing hydrofluoric acid (HF) for acid stimulation of offshore wells to improve hydrocarbon productivity has raised acid compatibility concerns with titanium alloy riser system components such as Titanium Stress Joints (TSJs). Recent published lab test findings...

...Square samples, 19 mm side, were cut from a commercially pure titanium UNS R50400 plate. Abstract The corrosion behavior of commercially pure titanium (UNS R50400, ASTM GRADE 2) was investigated in presence of aggressive, bromides containing solution reported to cause more severe localized...

... effects between the coupled Ti and TiN_x films were also observed when they were placed into an acidic electrolyte. thin films electrochemistry titanium titanium nitride galvanic corrosion INTRODUCTION Advances in integrated circuit (IC) fabrication has led to microelectronic devices...

... laboratory experiments to pre-qualify materials. The Salton Sea KGRA has utilized titanium since the early 1990’s to control the excessive corrosion being experienced in their production wells. Multiple alloys of titanium have been used, including UNS R53400, R56322, R56404 and R58640 as well as several...

...Abstract Titanium-based composites have the potential to be utilized in a range of applications where mechanical strength and corrosion resistance coupled with low density are advantageous. Lightweight structural composites were processed using a melt approach. The microstructures of these novel...

...titanium well acidizing acid stimulation hydrofluoric acid corrosion inhibitor BACKGROUND Abstract Increasing interest in utilizing hydrofluoric acid (HF) for acid stimulation of wells in the Gulf of Mexico to improve hydrocarbon productivity raised the question of acid chemical compatibility...

... alloys, so for a given inhibitor the degree of protection for ferrous alloys will differ significantly from that for Titanium or Ni-base alloys. In addition to corrosion, Environmental cracking is a threat in HF acid fluids, especially for titanium alloys, which are sensitive to HF acid corrosion...

... electrode. The cell is shown in Figure 2 . Anodic potentiodynamic tests were conducted in three different electrolytes at different concentrations: Abstract The corrosion behavior of pure titanium UNS R50250 and UNS R50400 were investigated and compared with electrochemical behavior of Ti-0.2Pd and Ti...

... loosening or infection. Surface treatments and coatings have been major research axes to address those problems. In this study, bio-active oxide coating containing silver particles on a titanium medical grade Ti-6Al-4V alloy and the development of a CaP bio-active oxide coating are reported. Both materials...

... were utilized to obtain insights into corrosion behavior. The alloys tested showed no signs of breakdown, and with the addition of niobium the passivation potential decreased. titanium niobium corrosion INTRODUCTION Modern structural biomedical implants are made from titanium alloys due...

... type 1 reagent water. Corrosion Tests Abstract Modern structural biomedical implants utilize titanium alloys due to their excellent corrosion resistance, mechanical properties and biocompatibility. An important mode of failure with the implant alloys, e.g., UNS R56400 (Ti-6Al-4V; Ti64), is aseptic...

... flat cell and microcell with comparison to wrought counterparts. Microcell technique permits electrochemical measurement in a small spatial scale, and it can be considered as a promising nondestructive testing method for additively manufactured metallic final part. Additive Manufacturing (AM) Titanium...

...In order to improve its corrosion resistance, titanium UNS R50400 was anodized in 0.5 M H₂SO₄ with cell voltage of 40 V, 90 V and 140 V applied as potential difference between the titanium anode and an activated titanium net working as cathode. The cell voltage was reached...

...The leading material used for structural implants is Ti-6Al-4V (Ti64) because of the excellent corrosion resistance, biocompatibility and mechanical properties of this alloy. Titanium forms a passive oxide layer that protects it from the environment. Recent developments have shown that the addition...

...The increasing use and consideration of titanium alloys for highly stressed tubular components in deep offshore hydrocarbon production riser systems (e.g., titanium stress joints [TSJs] ⁶ and deep high pressure/high temperature (HPHT) well production tubulars (e.g., OCTG) ^{7 , 8}...

...Titanium nitric acid 1,2,4,5-tetramethylbenzene vent line fire explosion INTRODUCTION A specialty chemical company was the manufacturer of organic acids for making fire retardant fabrics in batch runs using a titanium reactor. The reactor was 3 ½ years old. Major ingredients in the reactor...