The anodic behaviour of titanium carbide in sulphuric acid solutions

Electro‐Oxidation of Titanium Carbide Nanoparticles in Aqueous Acid Creates TiC@TiO2 Core‐Shell Structures

“…Further, the CVs were recorded for three consecutive scans in PBS of pH 5.8 and 8 in different potential ranges (Figure S5). The observed shift in oxidation peak potential with pH is in general accordance with the Pourbaix diagram of TiC, [22] which we discuss below after exploring the inherent electrochemistry in acidic medium (low pH).…”

“…Next, the shift of oxidation peak potentials (both OX1 and OX2) are plotted against pH (Figure 3, both PBS and H 2 SO 4 ) and superimposed over the Pourbaix diagram for TiC [22] . As observed, a shift of oxidation peak potential with pH is seen for PBS (pH 5.8‐8), which correlates with the data given in the Pourbaix diagram for the phase boundaries between pH 5–8 [22–24] …”

Electro‐Oxidation of Titanium Carbide Nanoparticles in Aqueous Acid Creates TiC@TiO2 Core‐Shell Structures

“…Further, the CVs were recorded for three consecutive scans in PBS of pH 5.8 and 8 in different potential ranges (Figure S5). The observed shift in oxidation peak potential with pH is in general accordance with the Pourbaix diagram of TiC, [22] which we discuss below after exploring the inherent electrochemistry in acidic medium (low pH).…”

“…Next, the shift of oxidation peak potentials (both OX1 and OX2) are plotted against pH (Figure 3, both PBS and H 2 SO 4 ) and superimposed over the Pourbaix diagram for TiC [22] . As observed, a shift of oxidation peak potential with pH is seen for PBS (pH 5.8‐8), which correlates with the data given in the Pourbaix diagram for the phase boundaries between pH 5–8 [22–24] …”

Structural and electrochemical properties of high quality epitaxial titanium carbide thin films grown by pulsed laser deposition on MgO (111) and Al2O3 (001) substrates

“…V vs. NHE, and with a peak current density of 750 A cm -2 . This corresponds to the electrochemical passivation of TiC by the formation of a hydrated titanium dioxide film, well-described now in the literature [17][18][19][20]. Carbon dioxide, which is the other thermodynamically stable compound [21], also evolves during this passivation and TiC + 5H2O  TiO2.H2O + CO2 + 8H + + 8e - (1) where n1 = 8 electrons per TiC are involved.…”

Electrochemical Characteristics of Amorphous Titanium Carbide Films Produced by Low‐Temperature Metal‐Organic Chemical Vapor Deposition (MOCVD)

“…Several workers have reported on the corrosion properties of crystalline forms of various carbides, including titanium carbide. However, except for Morancho, Petit, Dabosi, and COnstant (12), who performed corrosion studies on amorphous TiC-rich coatings produced by MOCVD of Ti(bipy)3, and for Cowling and Hintermann (16)(17)(18)(19), who investigated the dissolution of vapordeposited polycrystalline TiC in 2N H2SO4, little work has been done on the electrochemical behavior of amorphous or crystalline CVD TiC coatings. The studies of Mazza,Trasatti,and Bianchi (20,21); Kolotyrkin, Knyazheva, Neiman, and Pancheshnaya ( 22); Payer and Staehle (23,24); Takao and Terasaki (25); Raman, Nnaiked, Choudhary, and Das (26); Hobig (27); Echtenkamp (28); and Payer and Staehle (29) are all devoted to the corrosion behavior of different carbides in general, and sintered polycrystalline titanium carbide, in particular.…”

Electro‐Oxidation of Titanium Carbide Nanoparticles in Aqueous Acid Creates TiC@TiO2 Core‐Shell Structures

“…Further, the CVs were recorded for three consecutive scans in PBS of pH 5.8 and 8 in different potential ranges (Figure S5). The observed shift in oxidation peak potential with pH is in general accordance with the Pourbaix diagram of TiC, [22] which we discuss below after exploring the inherent electrochemistry in acidic medium (low pH).…”

“…Next, the shift of oxidation peak potentials (both OX1 and OX2) are plotted against pH (Figure 3, both PBS and H 2 SO 4 ) and superimposed over the Pourbaix diagram for TiC [22] . As observed, a shift of oxidation peak potential with pH is seen for PBS (pH 5.8‐8), which correlates with the data given in the Pourbaix diagram for the phase boundaries between pH 5–8 [22–24] …”

Structural and electrochemical properties of high quality epitaxial titanium carbide thin films grown by pulsed laser deposition on MgO (111) and Al2O3 (001) substrates

“…V vs. NHE, and with a peak current density of 750 A cm -2 . This corresponds to the electrochemical passivation of TiC by the formation of a hydrated titanium dioxide film, well-described now in the literature [17][18][19][20]. Carbon dioxide, which is the other thermodynamically stable compound [21], also evolves during this passivation and TiC + 5H2O  TiO2.H2O + CO2 + 8H + + 8e - (1) where n1 = 8 electrons per TiC are involved.…”

Electrochemical Characteristics of Amorphous Titanium Carbide Films Produced by Low‐Temperature Metal‐Organic Chemical Vapor Deposition (MOCVD)

“…Several workers have reported on the corrosion properties of crystalline forms of various carbides, including titanium carbide. However, except for Morancho, Petit, Dabosi, and COnstant (12), who performed corrosion studies on amorphous TiC-rich coatings produced by MOCVD of Ti(bipy)3, and for Cowling and Hintermann (16)(17)(18)(19), who investigated the dissolution of vapordeposited polycrystalline TiC in 2N H2SO4, little work has been done on the electrochemical behavior of amorphous or crystalline CVD TiC coatings. The studies of Mazza,Trasatti,and Bianchi (20,21); Kolotyrkin, Knyazheva, Neiman, and Pancheshnaya ( 22); Payer and Staehle (23,24); Takao and Terasaki (25); Raman, Nnaiked, Choudhary, and Das (26); Hobig (27); Echtenkamp (28); and Payer and Staehle (29) are all devoted to the corrosion behavior of different carbides in general, and sintered polycrystalline titanium carbide, in particular.…”

Electro‐Oxidation of Titanium Carbide Nanoparticles in Aqueous Acid Creates TiC@TiO2 Core‐Shell Structures

“…Further, the CVs were recorded for three consecutive scans in PBS of pH 5.8 and 8 in different potential ranges (Figure S5). The observed shift in oxidation peak potential with pH is in general accordance with the Pourbaix diagram of TiC, [22] which we discuss below after exploring the inherent electrochemistry in acidic medium (low pH).…”

“…Next, the shift of oxidation peak potentials (both OX1 and OX2) are plotted against pH (Figure 3, both PBS and H 2 SO 4 ) and superimposed over the Pourbaix diagram for TiC [22] . As observed, a shift of oxidation peak potential with pH is seen for PBS (pH 5.8‐8), which correlates with the data given in the Pourbaix diagram for the phase boundaries between pH 5–8 [22–24] …”

Structural and electrochemical properties of high quality epitaxial titanium carbide thin films grown by pulsed laser deposition on MgO (111) and Al2O3 (001) substrates

“…V vs. NHE, and with a peak current density of 750 A cm -2 . This corresponds to the electrochemical passivation of TiC by the formation of a hydrated titanium dioxide film, well-described now in the literature [17][18][19][20]. Carbon dioxide, which is the other thermodynamically stable compound [21], also evolves during this passivation and TiC + 5H2O  TiO2.H2O + CO2 + 8H + + 8e - (1) where n1 = 8 electrons per TiC are involved.…”

Electrochemical Characteristics of Amorphous Titanium Carbide Films Produced by Low‐Temperature Metal‐Organic Chemical Vapor Deposition (MOCVD)

“…Several workers have reported on the corrosion properties of crystalline forms of various carbides, including titanium carbide. However, except for Morancho, Petit, Dabosi, and COnstant (12), who performed corrosion studies on amorphous TiC-rich coatings produced by MOCVD of Ti(bipy)3, and for Cowling and Hintermann (16)(17)(18)(19), who investigated the dissolution of vapordeposited polycrystalline TiC in 2N H2SO4, little work has been done on the electrochemical behavior of amorphous or crystalline CVD TiC coatings. The studies of Mazza,Trasatti,and Bianchi (20,21); Kolotyrkin, Knyazheva, Neiman, and Pancheshnaya ( 22); Payer and Staehle (23,24); Takao and Terasaki (25); Raman, Nnaiked, Choudhary, and Das (26); Hobig (27); Echtenkamp (28); and Payer and Staehle (29) are all devoted to the corrosion behavior of different carbides in general, and sintered polycrystalline titanium carbide, in particular.…”