Thermo-chemical treatment of iron based composite electroplates

A scheme of renovating and hardening the parts with the use of composite electrochemical coatings is described. The powders of CrB 2 and Al 2O 3 serve as a dispersed phase in the electrodeposited coating from electrolytes containing FeCl 2 and FeSO 4. Chemical-and-thermal treatment (CTT) of parts was carried out at 210°C via sulfonitriding. Comparative tests of modified coatings and St45 for wear resistance in contact with 12KhN4A steel as a counterbody and for corrosion showed the improved characteristics after CTT

The effect of electrolyte composition on structure and properties of composite electrochemical coatings with copper matrix

A problem of wear resistance and hardness improvement is considered for copper coatings. Copper plating electrolyte is modified with addition of amine complexing agents and TiO 2 dispersed phase. Role of electrolyte composition and dispersed phase nature in structure forming and properties of composite electrochemical coatings Cu-TiO 2 is investigated. Diffraction layer-by-layer investigation of the composite coatings shows uniform distribution of dispersed phase in the deposit bulk and surface. The wear resistance of coatings is increased by 30-35%

Composite coatings with chromium-molybdenum matrix

A potentiality for producing the composite electrochemical coatings is considered through chromium alloying and modifying by the inclusions of dispersed phase in its matrix. Molybdenum powder dissolution in standard chromizing electrolyte is studied followed by introduction of graphite and boron to produce a polycomposite coatings. Tests for corrosion resistance, heat resistance and wear resistance of coatings produced showed that their working characteristics are superior to ordinary chromium coatings

Effect of unconventional physical treatments on the properties of anodic oxide coatings obtained in a suspension electrolyte

The new data for certain physical effects on anode-oxide coating deposition (ultrasonic field) and on coating (low-temperature plasma, thermal effects and short-time thermal shocks), formed in the electrolyte-suspension. The alumina powder is a dispersed phase in oxidizing AD-1M aluminum alloy. It is shown that the corrosion and thermal resistances are improved and the porosity is reduced under ultrasonic field conditions of oxidizing. The low-temperature plasma processing leads to crack formation on the coating surface independent of alumina presence

Thermo-chemical treatment of iron based composite electroplates

A scheme of renovating and hardening the parts with the use of composite electrochemical coatings is described. The powders of CrB 2 and Al 2O 3 serve as a dispersed phase in the electrodeposited coating from electrolytes containing FeCl 2 and FeSO 4. Chemical-and-thermal treatment (CTT) of parts was carried out at 210°C via sulfonitriding. Comparative tests of modified coatings and St45 for wear resistance in contact with 12KhN4A steel as a counterbody and for corrosion showed the improved characteristics after CTT

The effect of electrolyte composition on structure and properties of composite electrochemical coatings with copper matrix

A problem of wear resistance and hardness improvement is considered for copper coatings. Copper plating electrolyte is modified with addition of amine complexing agents and TiO 2 dispersed phase. Role of electrolyte composition and dispersed phase nature in structure forming and properties of composite electrochemical coatings Cu-TiO 2 is investigated. Diffraction layer-by-layer investigation of the composite coatings shows uniform distribution of dispersed phase in the deposit bulk and surface. The wear resistance of coatings is increased by 30-35%

The effect of electrolyte composition on structure and properties of composite electrochemical coatings with copper matrix

A problem of wear resistance and hardness improvement is considered for copper coatings. Copper plating electrolyte is modified with addition of amine complexing agents and TiO 2 dispersed phase. Role of electrolyte composition and dispersed phase nature in structure forming and properties of composite electrochemical coatings Cu-TiO 2 is investigated. Diffraction layer-by-layer investigation of the composite coatings shows uniform distribution of dispersed phase in the deposit bulk and surface. The wear resistance of coatings is increased by 30-35%

The effect of electrolyte composition on structure and properties of composite electrochemical coatings with copper matrix

A problem of wear resistance and hardness improvement is considered for copper coatings. Copper plating electrolyte is modified with addition of amine complexing agents and TiO 2 dispersed phase. Role of electrolyte composition and dispersed phase nature in structure forming and properties of composite electrochemical coatings Cu-TiO 2 is investigated. Diffraction layer-by-layer investigation of the composite coatings shows uniform distribution of dispersed phase in the deposit bulk and surface. The wear resistance of coatings is increased by 30-35%

Thermo-chemical treatment of iron based composite electroplates

A scheme of renovating and hardening the parts with the use of composite electrochemical coatings is described. The powders of CrB 2 and Al 2O 3 serve as a dispersed phase in the electrodeposited coating from electrolytes containing FeCl 2 and FeSO 4. Chemical-and-thermal treatment (CTT) of parts was carried out at 210°C via sulfonitriding. Comparative tests of modified coatings and St45 for wear resistance in contact with 12KhN4A steel as a counterbody and for corrosion showed the improved characteristics after CTT

Thermo-chemical treatment of iron based composite electroplates

A scheme of renovating and hardening the parts with the use of composite electrochemical coatings is described. The powders of CrB 2 and Al 2O 3 serve as a dispersed phase in the electrodeposited coating from electrolytes containing FeCl 2 and FeSO 4. Chemical-and-thermal treatment (CTT) of parts was carried out at 210°C via sulfonitriding. Comparative tests of modified coatings and St45 for wear resistance in contact with 12KhN4A steel as a counterbody and for corrosion showed the improved characteristics after CTT